Docker debian:stretch-20200514

Vulnerabilities

92 via 193 paths

Dependencies

83

Source

Group 6 Copy Created with Sketch. Docker

Target OS

debian:9
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Severity
  • 21
  • 13
  • 58
Status
  • 92
  • 0
  • 0

high severity

Out-of-bounds Write

  • Vulnerable module: bzip2/libbz2-1.0
  • Introduced through: bzip2/libbz2-1.0@1.0.6-8.1

Detailed paths

  • Introduced through: debian:stretch-20200514@* bzip2/libbz2-1.0@1.0.6-8.1

Overview

BZ2_decompress in decompress.c in bzip2 through 1.0.6 has an out-of-bounds write when there are many selectors.

References

high severity

Information Exposure

  • Vulnerable module: gcc-6/gcc-6-base
  • Introduced through: gcc-6/gcc-6-base@6.3.0-18+deb9u1, gcc-6/libgcc1@1:6.3.0-18+deb9u1 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* gcc-6/gcc-6-base@6.3.0-18+deb9u1
  • Introduced through: debian:stretch-20200514@* gcc-6/libgcc1@1:6.3.0-18+deb9u1
  • Introduced through: debian:stretch-20200514@* gcc-6/libstdc++6@6.3.0-18+deb9u1

Overview

stack_protect_prologue in cfgexpand.c and stack_protect_epilogue in function.c in GNU Compiler Collection (GCC) 4.1 through 8 (under certain circumstances) generate instruction sequences when targeting ARM targets that spill the address of the stack protector guard, which allows an attacker to bypass the protection of -fstack-protector, -fstack-protector-all, -fstack-protector-strong, and -fstack-protector-explicit against stack overflow by controlling what the stack canary is compared against.

References

high severity

Improper Data Handling

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

In the GNU C Library (aka glibc or libc6) before 2.28, parse_reg_exp in posix/regcomp.c misparses alternatives, which allows attackers to cause a denial of service (assertion failure and application exit) or trigger an incorrect result by attempting a regular-expression match.

References

high severity

Out-of-bounds Read

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

In the GNU C Library (aka glibc or libc6) through 2.29, proceed_next_node in posix/regexec.c has a heap-based buffer over-read via an attempted case-insensitive regular-expression match.

References

high severity

Out-of-bounds Write

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

An integer overflow in the implementation of the posix_memalign in memalign functions in the GNU C Library (aka glibc or libc6) 2.26 and earlier could cause these functions to return a pointer to a heap area that is too small, potentially leading to heap corruption.

References

high severity

Out-of-bounds Write

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

In glibc 2.26 and earlier there is confusion in the usage of getcwd() by realpath() which can be used to write before the destination buffer leading to a buffer underflow and potential code execution.

References

high severity

Out-of-bounds Write

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

The malloc implementation in the GNU C Library (aka glibc or libc6), from version 2.24 to 2.26 on powerpc, and only in version 2.26 on i386, did not properly handle malloc calls with arguments close to SIZE_MAX and could return a pointer to a heap region that is smaller than requested, eventually leading to heap corruption.

References

high severity

Out-of-bounds Write

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

An out-of-bounds write vulnerability was found in glibc before 2.31 when handling signal trampolines on PowerPC. Specifically, the backtrace function did not properly check the array bounds when storing the frame address, resulting in a denial of service or potential code execution. The highest threat from this vulnerability is to system availability.

References

high severity

Reachable Assertion

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

Affected versions of this package are vulnerable to Reachable Assertion. The iconv function in the GNU C Library (aka glibc or libc6) 2.32 and earlier, when processing invalid input sequences in the ISO-2022-JP-3 encoding, fails an assertion in the code path and aborts the program, potentially resulting in a denial of service.

Remediation

There is no fixed version for glibc.

References

high severity

Use After Free

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

A use-after-free vulnerability introduced in glibc upstream version 2.14 was found in the way the tilde expansion was carried out. Directory paths containing an initial tilde followed by a valid username were affected by this issue. A local attacker could exploit this flaw by creating a specially crafted path that, when processed by the glob function, would potentially lead to arbitrary code execution. This was fixed in version 2.32.

References

high severity

Cross-site Request Forgery (CSRF)

  • Vulnerable module: gnupg2/gpgv
  • Introduced through: gnupg2/gpgv@2.1.18-8~deb9u4

Detailed paths

  • Introduced through: debian:stretch-20200514@* gnupg2/gpgv@2.1.18-8~deb9u4

Overview

GnuPG version 2.1.12 - 2.2.11 contains a Cross ite Request Forgery (CSRF) vulnerability in dirmngr that can result in Attacker controlled CSRF, Information Disclosure, DoS. This attack appear to be exploitable via Victim must perform a WKD request, e.g. enter an email address in the composer window of Thunderbird/Enigmail. This vulnerability appears to have been fixed in after commit 4a4bb874f63741026bd26264c43bb32b1099f060.

References

high severity

CVE-2018-10754

  • Vulnerable module: ncurses/libncursesw5
  • Introduced through: ncurses/libncursesw5@6.0+20161126-1+deb9u2, ncurses/libtinfo5@6.0+20161126-1+deb9u2 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* ncurses/libncursesw5@6.0+20161126-1+deb9u2
  • Introduced through: debian:stretch-20200514@* ncurses/libtinfo5@6.0+20161126-1+deb9u2
  • Introduced through: debian:stretch-20200514@* ncurses/ncurses-base@6.0+20161126-1+deb9u2
  • Introduced through: debian:stretch-20200514@* ncurses/ncurses-bin@6.0+20161126-1+deb9u2

Overview

In ncurses before 6.1.20180414, there is a NULL Pointer Dereference in the _nc_parse_entry function of tinfo/parse_entry.c. It could lead to a remote denial of service if the terminfo library code is used to process untrusted terminfo data in which a use-name is invalid syntax. The product proceeds to the dereference code path even after a "dubious character `[' in name or alias field" detection.

References

high severity

Buffer Overflow

  • Vulnerable module: perl/perl-base
  • Introduced through: perl/perl-base@5.24.1-3+deb9u6
  • Fixed in: 5.24.1-3+deb9u7

Detailed paths

  • Introduced through: debian:stretch-20200514@* perl/perl-base@5.24.1-3+deb9u6

Overview

Affected versions of this package are vulnerable to Buffer Overflow regcomp.c in Perl before 5.30.3 allows a buffer overflow via a crafted regular expression because of recursive S_study_chunk calls.

Remediation

Upgrade perl to version or higher.

References

high severity

Integer Overflow or Wraparound

  • Vulnerable module: perl/perl-base
  • Introduced through: perl/perl-base@5.24.1-3+deb9u6
  • Fixed in: 5.24.1-3+deb9u7

Detailed paths

  • Introduced through: debian:stretch-20200514@* perl/perl-base@5.24.1-3+deb9u6

Overview

Affected versions of this package are vulnerable to Integer Overflow or Wraparound. Perl before 5.30.3 has an integer overflow related to mishandling of a "PL_regkind[OP(n)] == NOTHING" situation. A crafted regular expression could lead to malformed bytecode with a possibility of instruction injection.

Remediation

Upgrade perl to version or higher.

References

high severity

Out-of-bounds Write

  • Vulnerable module: perl/perl-base
  • Introduced through: perl/perl-base@5.24.1-3+deb9u6
  • Fixed in: 5.24.1-3+deb9u7

Detailed paths

  • Introduced through: debian:stretch-20200514@* perl/perl-base@5.24.1-3+deb9u6

Overview

Affected versions of this package are vulnerable to Out-of-bounds Write. Perl before 5.30.3 on 32-bit platforms allows a heap-based buffer overflow because nested regular expression quantifiers have an integer overflow.

Remediation

Upgrade perl to version or higher.

References

high severity

Out-of-Bounds

  • Vulnerable module: shadow/login
  • Introduced through: shadow/login@1:4.4-4.1 and shadow/passwd@1:4.4-4.1

Detailed paths

  • Introduced through: debian:stretch-20200514@* shadow/login@1:4.4-4.1
  • Introduced through: debian:stretch-20200514@* shadow/passwd@1:4.4-4.1

Overview

In shadow before 4.5, the newusers tool could be made to manipulate internal data structures in ways unintended by the authors. Malformed input may lead to crashes (with a buffer overflow or other memory corruption) or other unspecified behaviors. This crosses a privilege boundary in, for example, certain web-hosting environments in which a Control Panel allows an unprivileged user account to create subaccounts.

References

high severity

Incorrect Privilege Assignment

  • Vulnerable module: systemd/libsystemd0
  • Introduced through: systemd/libsystemd0@232-25+deb9u12 and systemd/libudev1@232-25+deb9u12

Detailed paths

  • Introduced through: debian:stretch-20200514@* systemd/libsystemd0@232-25+deb9u12
  • Introduced through: debian:stretch-20200514@* systemd/libudev1@232-25+deb9u12

Overview

It was discovered that a systemd service that uses DynamicUser property can create a SUID/SGID binary that would be allowed to run as the transient service UID/GID even after the service is terminated. A local attacker may use this flaw to access resources that will be owned by a potentially different service in the future, when the UID/GID will be recycled.

References

high severity

Information Exposure

  • Vulnerable module: systemd/libsystemd0
  • Introduced through: systemd/libsystemd0@232-25+deb9u12 and systemd/libudev1@232-25+deb9u12

Detailed paths

  • Introduced through: debian:stretch-20200514@* systemd/libsystemd0@232-25+deb9u12
  • Introduced through: debian:stretch-20200514@* systemd/libudev1@232-25+deb9u12

Overview

systemd 242 changes the VT1 mode upon a logout, which allows attackers to read cleartext passwords in certain circumstances, such as watching a shutdown, or using Ctrl-Alt-F1 and Ctrl-Alt-F2. This occurs because the KDGKBMODE (aka current keyboard mode) check is mishandled.

References

high severity

Privilege Chaining

  • Vulnerable module: systemd/libsystemd0
  • Introduced through: systemd/libsystemd0@232-25+deb9u12 and systemd/libudev1@232-25+deb9u12

Detailed paths

  • Introduced through: debian:stretch-20200514@* systemd/libsystemd0@232-25+deb9u12
  • Introduced through: debian:stretch-20200514@* systemd/libudev1@232-25+deb9u12

Overview

It was discovered that a systemd service that uses DynamicUser property can get new privileges through the execution of SUID binaries, which would allow to create binaries owned by the service transient group with the setgid bit set. A local attacker may use this flaw to access resources that will be owned by a potentially different service in the future, when the GID will be recycled.

References

high severity

Use After Free

  • Vulnerable module: systemd/libsystemd0
  • Introduced through: systemd/libsystemd0@232-25+deb9u12 and systemd/libudev1@232-25+deb9u12

Detailed paths

  • Introduced through: debian:stretch-20200514@* systemd/libsystemd0@232-25+deb9u12
  • Introduced through: debian:stretch-20200514@* systemd/libudev1@232-25+deb9u12

Overview

A heap use-after-free vulnerability was found in systemd before version v245-rc1, where asynchronous Polkit queries are performed while handling dbus messages. A local unprivileged attacker can abuse this flaw to crash systemd services or potentially execute code and elevate their privileges, by sending specially crafted dbus messages.

References

high severity

Access Restriction Bypass

  • Vulnerable module: util-linux
  • Introduced through: util-linux@2.29.2-1+deb9u1, util-linux/bsdutils@1:2.29.2-1+deb9u1 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* util-linux@2.29.2-1+deb9u1
  • Introduced through: debian:stretch-20200514@* util-linux/bsdutils@1:2.29.2-1+deb9u1
  • Introduced through: debian:stretch-20200514@* util-linux/libblkid1@2.29.2-1+deb9u1
  • Introduced through: debian:stretch-20200514@* util-linux/libfdisk1@2.29.2-1+deb9u1
  • Introduced through: debian:stretch-20200514@* util-linux/libmount1@2.29.2-1+deb9u1
  • Introduced through: debian:stretch-20200514@* util-linux/libsmartcols1@2.29.2-1+deb9u1
  • Introduced through: debian:stretch-20200514@* util-linux/libuuid1@2.29.2-1+deb9u1
  • Introduced through: debian:stretch-20200514@* util-linux/mount@2.29.2-1+deb9u1

Overview

runuser in util-linux allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.

References

medium severity

Integer Overflow or Wraparound

  • Vulnerable module: apt
  • Introduced through: apt@1.4.10 and apt/libapt-pkg5.0@1.4.10
  • Fixed in: 1.4.11

Detailed paths

  • Introduced through: debian:stretch-20200514@* apt@1.4.10
  • Introduced through: debian:stretch-20200514@* apt/libapt-pkg5.0@1.4.10

Overview

Affected versions of this package are vulnerable to Integer Overflow or Wraparound. APT had several integer overflows and underflows while parsing .deb packages, aka GHSL-2020-168 GHSL-2020-169, in files apt-pkg/contrib/extracttar.cc, apt-pkg/deb/debfile.cc, and apt-pkg/contrib/arfile.cc. This issue affects: apt 1.2.32ubuntu0 versions prior to 1.2.32ubuntu0.2; 1.6.12ubuntu0 versions prior to 1.6.12ubuntu0.2; 2.0.2ubuntu0 versions prior to 2.0.2ubuntu0.2; 2.1.10ubuntu0 versions prior to 2.1.10ubuntu0.1;

Remediation

Upgrade apt to version or higher.

References

medium severity

Out-of-bounds Write

  • Vulnerable module: e2fsprogs
  • Introduced through: e2fsprogs@1.43.4-2+deb9u1, e2fsprogs/e2fslibs@1.43.4-2+deb9u1 and others
  • Fixed in: 1.43.4-2+deb9u2

Detailed paths

  • Introduced through: debian:stretch-20200514@* e2fsprogs@1.43.4-2+deb9u1
  • Introduced through: debian:stretch-20200514@* e2fsprogs/e2fslibs@1.43.4-2+deb9u1
  • Introduced through: debian:stretch-20200514@* e2fsprogs/libcomerr2@1.43.4-2+deb9u1
  • Introduced through: debian:stretch-20200514@* e2fsprogs/libss2@1.43.4-2+deb9u1

Overview

A code execution vulnerability exists in the directory rehashing functionality of E2fsprogs e2fsck 1.45.4. A specially crafted ext4 directory can cause an out-of-bounds write on the stack, resulting in code execution. An attacker can corrupt a partition to trigger this vulnerability.

References

medium severity

Out-of-Bounds

  • Vulnerable module: elfutils/libelf1
  • Introduced through: elfutils/libelf1@0.168-1

Detailed paths

  • Introduced through: debian:stretch-20200514@* elfutils/libelf1@0.168-1

Overview

An invalid memory address dereference was discovered in dwfl_segment_report_module.c in libdwfl in elfutils through v0.174. The vulnerability allows attackers to cause a denial of service (application crash) with a crafted ELF file, as demonstrated by consider_notes.

References

medium severity

Out-of-bounds Read

  • Vulnerable module: elfutils/libelf1
  • Introduced through: elfutils/libelf1@0.168-1

Detailed paths

  • Introduced through: debian:stretch-20200514@* elfutils/libelf1@0.168-1

Overview

dwarf_getaranges in dwarf_getaranges.c in libdw in elfutils before 2018-08-18 allows remote attackers to cause a denial of service (heap-based buffer over-read) via a crafted file.

References

medium severity

Allocation of Resources Without Limits or Throttling

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

The DNS stub resolver in the GNU C Library (aka glibc or libc6) before version 2.26, when EDNS support is enabled, will solicit large UDP responses from name servers, potentially simplifying off-path DNS spoofing attacks due to IP fragmentation.

References

medium severity

Improper Input Validation

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

In the GNU C Library (aka glibc or libc6) through 2.28, the getaddrinfo function would successfully parse a string that contained an IPv4 address followed by whitespace and arbitrary characters, which could lead applications to incorrectly assume that it had parsed a valid string, without the possibility of embedded HTTP headers or other potentially dangerous substrings.

References

medium severity

Out-of-Bounds

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

The GNU C Library (aka glibc or libc6) before 2.32 could overflow an on-stack buffer during range reduction if an input to an 80-bit long double function contains a non-canonical bit pattern, a seen when passing a 0x5d414141414141410000 value to sinl on x86 targets. This is related to sysdeps/ieee754/ldbl-96/e_rem_pio2l.c.

References

medium severity

Out-of-bounds Read

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

Affected versions of this package are vulnerable to Out-of-bounds Read. The iconv feature in the GNU C Library (aka glibc or libc6) through 2.32, when processing invalid multi-byte input sequences in the EUC-KR encoding, may have a buffer over-read.

Remediation

There is no fixed version for glibc.

References

medium severity

Cryptographic Issues

  • Vulnerable module: libgcrypt20
  • Introduced through: libgcrypt20@1.7.6-2+deb9u3

Detailed paths

  • Introduced through: debian:stretch-20200514@* libgcrypt20@1.7.6-2+deb9u3

Overview

In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are available to other processes. (The C implementation is used on platforms where an assembly-language implementation is unavailable.)

References

medium severity

Race Condition

  • Vulnerable module: libgcrypt20
  • Introduced through: libgcrypt20@1.7.6-2+deb9u3

Detailed paths

  • Introduced through: debian:stretch-20200514@* libgcrypt20@1.7.6-2+deb9u3

Overview

It was discovered that there was a ECDSA timing attack in the libgcrypt20 cryptographic library. Version affected: 1.8.4-5, 1.7.6-2+deb9u3, and 1.6.3-2+deb8u4. Versions fixed: 1.8.5-2 and 1.6.3-2+deb8u7.

References

medium severity

Information Exposure

  • Vulnerable module: nettle/libnettle6
  • Introduced through: nettle/libnettle6@3.3-1+b2

Detailed paths

  • Introduced through: debian:stretch-20200514@* nettle/libnettle6@3.3-1+b2

Overview

A Bleichenbacher type side-channel based padding oracle attack was found in the way nettle handles endian conversion of RSA decrypted PKCS#1 v1.5 data. An attacker who is able to run a process on the same physical core as the victim process, could use this flaw extract plaintext or in some cases downgrade any TLS connections to a vulnerable server.

References

medium severity

Integer Overflow or Wraparound

  • Vulnerable module: pcre3/libpcre3
  • Introduced through: pcre3/libpcre3@2:8.39-3

Detailed paths

  • Introduced through: debian:stretch-20200514@* pcre3/libpcre3@2:8.39-3

Overview

Affected versions of this package are vulnerable to Integer Overflow or Wraparound libpcre in PCRE before 8.44 allows an integer overflow via a large number after a (?C substring.

Remediation

There is no fixed version for pcre3.

References

medium severity

Loop with Unreachable Exit Condition ('Infinite Loop')

  • Vulnerable module: tar
  • Introduced through: tar@1.29b-1.1

Detailed paths

  • Introduced through: debian:stretch-20200514@* tar@1.29b-1.1

Overview

GNU Tar through 1.30, when --sparse is used, mishandles file shrinkage during read access, which allows local users to cause a denial of service (infinite read loop in sparse_dump_region in sparse.c) by modifying a file that is supposed to be archived by a different user's process (e.g., a system backup running as root).

References

low severity

Improper Verification of Cryptographic Signature

  • Vulnerable module: apt
  • Introduced through: apt@1.4.10 and apt/libapt-pkg5.0@1.4.10

Detailed paths

  • Introduced through: debian:stretch-20200514@* apt@1.4.10
  • Introduced through: debian:stretch-20200514@* apt/libapt-pkg5.0@1.4.10

Overview

It was found that apt-key in apt, all versions, do not correctly validate gpg keys with the master keyring, leading to a potential man-in-the-middle attack.

References

low severity

Improper Check for Dropped Privileges

  • Vulnerable module: bash
  • Introduced through: bash@4.4-5

Detailed paths

  • Introduced through: debian:stretch-20200514@* bash@4.4-5

Overview

An issue was discovered in disable_priv_mode in shell.c in GNU Bash through 5.0 patch 11. By default, if Bash is run with its effective UID not equal to its real UID, it will drop privileges by setting its effective UID to its real UID. However, it does so incorrectly. On Linux and other systems that support "saved UID" functionality, the saved UID is not dropped. An attacker with command execution in the shell can use "enable -f" for runtime loading of a new builtin, which can be a shared object that calls setuid() and therefore regains privileges. However, binaries running with an effective UID of 0 are unaffected.

References

low severity

Improper Input Validation

  • Vulnerable module: coreutils
  • Introduced through: coreutils@8.26-3

Detailed paths

  • Introduced through: debian:stretch-20200514@* coreutils@8.26-3

Overview

chroot in GNU coreutils, when used with --userspec, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.

References

low severity

Race Condition

  • Vulnerable module: coreutils
  • Introduced through: coreutils@8.26-3

Detailed paths

  • Introduced through: debian:stretch-20200514@* coreutils@8.26-3

Overview

In GNU Coreutils through 8.29, chown-core.c in chown and chgrp does not prevent replacement of a plain file with a symlink during use of the POSIX "-R -L" options, which allows local users to modify the ownership of arbitrary files by leveraging a race condition.

References

low severity

Allocation of Resources Without Limits or Throttling

  • Vulnerable module: elfutils/libelf1
  • Introduced through: elfutils/libelf1@0.168-1

Detailed paths

  • Introduced through: debian:stretch-20200514@* elfutils/libelf1@0.168-1

Overview

An attempted excessive memory allocation was discovered in the function read_long_names in elf_begin.c in libelf in elfutils 0.174. Remote attackers could leverage this vulnerability to cause a denial-of-service via crafted elf input, which leads to an out-of-memory exception. NOTE: The maintainers believe this is not a real issue, but instead a "warning caused by ASAN because the allocation is big. By setting ASAN_OPTIONS=allocator_may_return_null=1 and running the reproducer, nothing happens."

References

low severity

Divide By Zero

  • Vulnerable module: elfutils/libelf1
  • Introduced through: elfutils/libelf1@0.168-1

Detailed paths

  • Introduced through: debian:stretch-20200514@* elfutils/libelf1@0.168-1

Overview

Divide-by-zero vulnerabilities in the function arlib_add_symbols() in arlib.c in elfutils 0.174 allow remote attackers to cause a denial of service (application crash) with a crafted ELF file, as demonstrated by eu-ranlib, because a zero sh_entsize is mishandled.

References

low severity

Double Free

  • Vulnerable module: elfutils/libelf1
  • Introduced through: elfutils/libelf1@0.168-1

Detailed paths

  • Introduced through: debian:stretch-20200514@* elfutils/libelf1@0.168-1

Overview

libelf/elf_end.c in elfutils 0.173 allows remote attackers to cause a denial of service (double free and application crash) or possibly have unspecified other impact because it tries to decompress twice.

References

low severity

Out-of-Bounds

  • Vulnerable module: elfutils/libelf1
  • Introduced through: elfutils/libelf1@0.168-1

Detailed paths

  • Introduced through: debian:stretch-20200514@* elfutils/libelf1@0.168-1

Overview

An Invalid Memory Address Dereference exists in the function elf_end in libelf in elfutils through v0.174. Although eu-size is intended to support ar files inside ar files, handle_ar in size.c closes the outer ar file before handling all inner entries. The vulnerability allows attackers to cause a denial of service (application crash) with a crafted ELF file.

References

low severity

Out-of-bounds Read

  • Vulnerable module: elfutils/libelf1
  • Introduced through: elfutils/libelf1@0.168-1

Detailed paths

  • Introduced through: debian:stretch-20200514@* elfutils/libelf1@0.168-1

Overview

An issue was discovered in elfutils 0.175. A segmentation fault can occur in the function elf64_xlatetom in libelf/elf32_xlatetom.c, due to dwfl_segment_report_module not checking whether the dyn data read from a core file is truncated. A crafted input can cause a program crash, leading to denial-of-service, as demonstrated by eu-stack.

References

low severity

Out-of-bounds Read

  • Vulnerable module: elfutils/libelf1
  • Introduced through: elfutils/libelf1@0.168-1

Detailed paths

  • Introduced through: debian:stretch-20200514@* elfutils/libelf1@0.168-1

Overview

A heap-based buffer over-read was discovered in the function read_srclines in dwarf_getsrclines.c in libdw in elfutils 0.175. A crafted input can cause segmentation faults, leading to denial-of-service, as demonstrated by eu-nm.

References

low severity

Out-of-bounds Read

  • Vulnerable module: elfutils/libelf1
  • Introduced through: elfutils/libelf1@0.168-1

Detailed paths

  • Introduced through: debian:stretch-20200514@* elfutils/libelf1@0.168-1

Overview

libdw in elfutils 0.173 checks the end of the attributes list incorrectly in dwarf_getabbrev in dwarf_getabbrev.c and dwarf_hasattr in dwarf_hasattr.c, leading to a heap-based buffer over-read and an application crash.

References

low severity

Out-of-bounds Read

  • Vulnerable module: elfutils/libelf1
  • Introduced through: elfutils/libelf1@0.168-1

Detailed paths

  • Introduced through: debian:stretch-20200514@* elfutils/libelf1@0.168-1

Overview

In elfutils 0.175, a heap-based buffer over-read was discovered in the function elf32_xlatetom in elf32_xlatetom.c in libelf. A crafted ELF input can cause a segmentation fault leading to denial of service (program crash) because ebl_core_note does not reject malformed core file notes.

References

low severity

Out-of-bounds Write

  • Vulnerable module: elfutils/libelf1
  • Introduced through: elfutils/libelf1@0.168-1

Detailed paths

  • Introduced through: debian:stretch-20200514@* elfutils/libelf1@0.168-1

Overview

In elfutils 0.175, a negative-sized memcpy is attempted in elf_cvt_note in libelf/note_xlate.h because of an incorrect overflow check. Crafted elf input causes a segmentation fault, leading to denial of service (program crash).

References

low severity

Access Restriction Bypass

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

** DISPUTED ** GNU Libc current is affected by: Re-mapping current loaded library with malicious ELF file. The impact is: In worst case attacker may evaluate privileges. The component is: libld. The attack vector is: Attacker sends 2 ELF files to victim and asks to run ldd on it. ldd execute code. NOTE: Upstream comments indicate "this is being treated as a non-security bug and no real threat."

References

low severity

CVE-2010-4051

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

The regcomp implementation in the GNU C Library (aka glibc or libc6) through 2.11.3, and 2.12.x through 2.12.2, allows context-dependent attackers to cause a denial of service (application crash) via a regular expression containing adjacent bounded repetitions that bypass the intended RE_DUP_MAX limitation, as demonstrated by a {10,}{10,}{10,}{10,}{10,} sequence in the proftpd.gnu.c exploit for ProFTPD, related to a "RE_DUP_MAX overflow."

References

low severity

CVE-2020-27618

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

Affected versions of this package are vulnerable to CVE-2020-27618. The iconv function in the GNU C Library (aka glibc or libc6) 2.32 and earlier, when processing invalid multi-byte input sequences in IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 encodings, fails to advance the input state, which could lead to an infinite loop in applications, resulting in a denial of service, a different vulnerability from CVE-2016-10228.

Remediation

There is no fixed version for glibc.

References

low severity
new

Double Free

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

Affected versions of this package are vulnerable to Double Free. The nameserver caching daemon (nscd) in the GNU C Library (aka glibc or libc6) 2.29 through 2.33, when processing a request for netgroup lookup, may crash due to a double-free, potentially resulting in degraded service or Denial of Service on the local system. This is related to netgroupcache.c.

Remediation

There is no fixed version for glibc.

References

low severity

Improper Data Handling

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

The pop_fail_stack function in the GNU C Library (aka glibc or libc6) allows context-dependent attackers to cause a denial of service (assertion failure and application crash) via vectors related to extended regular expression processing.

References

low severity

Improper Input Validation

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

The iconv program in the GNU C Library (aka glibc or libc6) 2.31 and earlier, when invoked with multiple suffixes in the destination encoding (TRANSLATE or IGNORE) along with the -c option, enters an infinite loop when processing invalid multi-byte input sequences, leading to a denial of service.

References

low severity

Improper Resource Shutdown or Release

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

The string component in the GNU C Library (aka glibc or libc6) through 2.28, when running on the x32 architecture, incorrectly attempts to use a 64-bit register for size_t in assembly codes, which can lead to a segmentation fault or possibly unspecified other impact, as demonstrated by a crash in __memmove_avx_unaligned_erms in sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S during a memcpy.

References

low severity

Information Exposure

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

** DISPUTED ** GNU Libc current is affected by: Mitigation bypass. The impact is: Attacker may bypass ASLR using cache of thread stack and heap. The component is: glibc. NOTE: Upstream comments indicate "this is being treated as a non-security bug and no real threat."

References

low severity

Information Exposure

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

On the x86-64 architecture, the GNU C Library (aka glibc) before 2.31 fails to ignore the LD_PREFER_MAP_32BIT_EXEC environment variable during program execution after a security transition, allowing local attackers to restrict the possible mapping addresses for loaded libraries and thus bypass ASLR for a setuid program.

References

low severity

Integer Underflow

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

An exploitable signed comparison vulnerability exists in the ARMv7 memcpy() implementation of GNU glibc 2.30.9000. Calling memcpy() (on ARMv7 targets that utilize the GNU glibc implementation) with a negative value for the 'num' parameter results in a signed comparison vulnerability. If an attacker underflows the 'num' parameter to memcpy(), this vulnerability could lead to undefined behavior such as writing to out-of-bounds memory and potentially remote code execution. Furthermore, this memcpy() implementation allows for program execution to continue in scenarios where a segmentation fault or crash should have occurred. The dangers occur in that subsequent execution and iterations of this code will be executed with this corrupted data.

References

low severity

Out-of-Bounds

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

In the GNU C Library (aka glibc or libc6) through 2.29, the memcmp function for the x32 architecture can incorrectly return zero (indicating that the inputs are equal) because the RDX most significant bit is mishandled.

References

low severity

Out-of-Bounds

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

** DISPUTED ** GNU Libc current is affected by: Mitigation bypass. The impact is: Attacker may bypass stack guard protection. The component is: nptl. The attack vector is: Exploit stack buffer overflow vulnerability and use this bypass vulnerability to bypass stack guard. NOTE: Upstream comments indicate "this is being treated as a non-security bug and no real threat."

References

low severity

Resource Management Errors

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

Stack consumption vulnerability in the regcomp implementation in the GNU C Library (aka glibc or libc6) through 2.11.3, and 2.12.x through 2.12.2, allows context-dependent attackers to cause a denial of service (resource exhaustion) via a regular expression containing adjacent repetition operators, as demonstrated by a {10,}{10,}{10,}{10,} sequence in the proftpd.gnu.c exploit for ProFTPD.

References

low severity

Resource Management Errors

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

The glob implementation in the GNU C Library (aka glibc or libc6) allows remote authenticated users to cause a denial of service (CPU and memory consumption) via crafted glob expressions that do not match any pathnames, as demonstrated by glob expressions in STAT commands to an FTP daemon, a different vulnerability than CVE-2010-2632.

References

low severity

Uncontrolled Recursion

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

** DISPUTED ** In the GNU C Library (aka glibc or libc6) through 2.29, check_dst_limits_calc_pos_1 in posix/regexec.c has Uncontrolled Recursion, as demonstrated by '(|)(\1\1)*' in grep, a different issue than CVE-2018-20796. NOTE: the software maintainer disputes that this is a vulnerability because the behavior occurs only with a crafted pattern.

References

low severity

Uncontrolled Recursion

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

In the GNU C Library (aka glibc or libc6) through 2.29, check_dst_limits_calc_pos_1 in posix/regexec.c has Uncontrolled Recursion, as demonstrated by '(\227|)(\1\1|t1|\\2537)+' in grep.

References

low severity

Use of Insufficiently Random Values

  • Vulnerable module: glibc/libc-bin
  • Introduced through: glibc/libc-bin@2.24-11+deb9u4, glibc/libc6@2.24-11+deb9u4 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* glibc/libc-bin@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/libc6@2.24-11+deb9u4
  • Introduced through: debian:stretch-20200514@* glibc/multiarch-support@2.24-11+deb9u4

Overview

** DISPUTED ** GNU Libc current is affected by: Mitigation bypass. The impact is: Attacker may guess the heap addresses of pthread_created thread. The component is: glibc. NOTE: the vendor's position is "ASLR bypass itself is not a vulnerability."

References

low severity

Key Management Errors

  • Vulnerable module: gnupg2/gpgv
  • Introduced through: gnupg2/gpgv@2.1.18-8~deb9u4

Detailed paths

  • Introduced through: debian:stretch-20200514@* gnupg2/gpgv@2.1.18-8~deb9u4

Overview

GnuPG 2.2.4 and 2.2.5 does not enforce a configuration in which key certification requires an offline master Certify key, which results in apparently valid certifications that occurred only with access to a signing subkey.

References

low severity

Use of a Broken or Risky Cryptographic Algorithm

  • Vulnerable module: gnupg2/gpgv
  • Introduced through: gnupg2/gpgv@2.1.18-8~deb9u4

Detailed paths

  • Introduced through: debian:stretch-20200514@* gnupg2/gpgv@2.1.18-8~deb9u4

Overview

A flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm. An attacker could use this weakness to create forged certificate signatures. This issue affects GnuPG versions before 2.2.18.

References

low severity

Use of a Broken or Risky Cryptographic Algorithm

  • Vulnerable module: libgcrypt20
  • Introduced through: libgcrypt20@1.7.6-2+deb9u3

Detailed paths

  • Introduced through: debian:stretch-20200514@* libgcrypt20@1.7.6-2+deb9u3

Overview

cipher/elgamal.c in Libgcrypt through 1.8.2, when used to encrypt messages directly, improperly encodes plaintexts, which allows attackers to obtain sensitive information by reading ciphertext data (i.e., it does not have semantic security in face of a ciphertext-only attack). The Decisional Diffie-Hellman (DDH) assumption does not hold for Libgcrypt's ElGamal implementation.

References

low severity

Buffer Overflow

  • Vulnerable module: lz4/liblz4-1
  • Introduced through: lz4/liblz4-1@0.0~r131-2+b1

Detailed paths

  • Introduced through: debian:stretch-20200514@* lz4/liblz4-1@0.0~r131-2+b1

Overview

LZ4 before 1.9.2 has a heap-based buffer overflow in LZ4_write32 (related to LZ4_compress_destSize), affecting applications that call LZ4_compress_fast with a large input. (This issue can also lead to data corruption.) NOTE: the vendor states "only a few specific / uncommon usages of the API are at risk."

References

low severity

NULL Pointer Dereference

  • Vulnerable module: ncurses/libncursesw5
  • Introduced through: ncurses/libncursesw5@6.0+20161126-1+deb9u2, ncurses/libtinfo5@6.0+20161126-1+deb9u2 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* ncurses/libncursesw5@6.0+20161126-1+deb9u2
  • Introduced through: debian:stretch-20200514@* ncurses/libtinfo5@6.0+20161126-1+deb9u2
  • Introduced through: debian:stretch-20200514@* ncurses/ncurses-base@6.0+20161126-1+deb9u2
  • Introduced through: debian:stretch-20200514@* ncurses/ncurses-bin@6.0+20161126-1+deb9u2

Overview

In ncurses 6.1, there is a NULL pointer dereference at function _nc_parse_entry in parse_entry.c that will lead to a denial of service attack. The product proceeds to the dereference code path even after a "dubious character `*' in name or alias field" detection.

References

low severity

Out-of-bounds Read

  • Vulnerable module: ncurses/libncursesw5
  • Introduced through: ncurses/libncursesw5@6.0+20161126-1+deb9u2, ncurses/libtinfo5@6.0+20161126-1+deb9u2 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* ncurses/libncursesw5@6.0+20161126-1+deb9u2
  • Introduced through: debian:stretch-20200514@* ncurses/libtinfo5@6.0+20161126-1+deb9u2
  • Introduced through: debian:stretch-20200514@* ncurses/ncurses-base@6.0+20161126-1+deb9u2
  • Introduced through: debian:stretch-20200514@* ncurses/ncurses-bin@6.0+20161126-1+deb9u2

Overview

There is a heap-based buffer over-read in the fmt_entry function in tinfo/comp_hash.c in the terminfo library in ncurses before 6.1-20191012.

References

low severity

Out-of-bounds Read

  • Vulnerable module: ncurses/libncursesw5
  • Introduced through: ncurses/libncursesw5@6.0+20161126-1+deb9u2, ncurses/libtinfo5@6.0+20161126-1+deb9u2 and others

Detailed paths

  • Introduced through: debian:stretch-20200514@* ncurses/libncursesw5@6.0+20161126-1+deb9u2
  • Introduced through: debian:stretch-20200514@* ncurses/libtinfo5@6.0+20161126-1+deb9u2
  • Introduced through: debian:stretch-20200514@* ncurses/ncurses-base@6.0+20161126-1+deb9u2
  • Introduced through: debian:stretch-20200514@* ncurses/ncurses-bin@6.0+20161126-1+deb9u2

Overview

There is a heap-based buffer over-read in the _nc_find_entry function in tinfo/comp_hash.c in the terminfo library in ncurses before 6.1-20191012.

References

low severity

Out-of-Bounds

  • Vulnerable module: pcre3/libpcre3
  • Introduced through: pcre3/libpcre3@2:8.39-3

Detailed paths

  • Introduced through: debian:stretch-20200514@* pcre3/libpcre3@2:8.39-3

Overview

Stack-based buffer overflow in the pcre32_copy_substring function in pcre_get.c in libpcre1 in PCRE 8.40 allows remote attackers to cause a denial of service (WRITE of size 4) or possibly have unspecified other impact via a crafted file.

References

low severity

Out-of-Bounds

  • Vulnerable module: pcre3/libpcre3
  • Introduced through: pcre3/libpcre3@2:8.39-3

Detailed paths

  • Introduced through: debian:stretch-20200514@* pcre3/libpcre3@2:8.39-3

Overview

Stack-based buffer overflow in the pcre32_copy_substring function in pcre_get.c in libpcre1 in PCRE 8.40 allows remote attackers to cause a denial of service (WRITE of size 268) or possibly have unspecified other impact via a crafted file.

References

low severity

Out-of-Bounds

  • Vulnerable module: pcre3/libpcre3
  • Introduced through: pcre3/libpcre3@2:8.39-3

Detailed paths

  • Introduced through: debian:stretch-20200514@* pcre3/libpcre3@2:8.39-3

Overview

** DISPUTED ** In PCRE 8.41, after compiling, a pcretest load test PoC produces a crash overflow in the function match() in pcre_exec.c because of a self-recursive call. NOTE: third parties dispute the relevance of this report, noting that there are options that can be used to limit the amount of stack that is used.

References

low severity

Out-of-bounds Read

  • Vulnerable module: pcre3/libpcre3
  • Introduced through: pcre3/libpcre3@2:8.39-3

Detailed paths

  • Introduced through: debian:stretch-20200514@* pcre3/libpcre3@2:8.39-3

Overview

Affected versions of this package are vulnerable to Out-of-bounds Read libpcre in PCRE before 8.43 allows a subject buffer over-read in JIT when UTF is disabled, and \X or \R has more than one fixed quantifier, a related issue to CVE-2019-20454.

Remediation

There is no fixed version for pcre3.

References

low severity

Uncontrolled Recursion

  • Vulnerable module: pcre3/libpcre3
  • Introduced through: pcre3/libpcre3@2:8.39-3

Detailed paths

  • Introduced through: debian:stretch-20200514@* pcre3/libpcre3@2:8.39-3

Overview

In PCRE 8.41, the OP_KETRMAX feature in the match function in pcre_exec.c allows stack exhaustion (uncontrolled recursion) when processing a crafted regular expression.

References

low severity

Link Following

  • Vulnerable module: perl/perl-base
  • Introduced through: perl/perl-base@5.24.1-3+deb9u6

Detailed paths

  • Introduced through: debian:stretch-20200514@* perl/perl-base@5.24.1-3+deb9u6

Overview

_is_safe in the File::Temp module for Perl does not properly handle symlinks.

References

low severity

Access Restriction Bypass

  • Vulnerable module: shadow/login
  • Introduced through: shadow/login@1:4.4-4.1 and shadow/passwd@1:4.4-4.1

Detailed paths

  • Introduced through: debian:stretch-20200514@* shadow/login@1:4.4-4.1
  • Introduced through: debian:stretch-20200514@* shadow/passwd@1:4.4-4.1

Overview

initscripts in rPath Linux 1 sets insecure permissions for the /var/log/btmp file, which allows local users to obtain sensitive information regarding authentication attempts. NOTE: because sshd detects the insecure permissions and does not log certain events, this also prevents sshd from logging failed authentication attempts by remote attackers.

References

low severity

Incorrect Permission Assignment for Critical Resource

  • Vulnerable module: shadow/login
  • Introduced through: shadow/login@1:4.4-4.1 and shadow/passwd@1:4.4-4.1

Detailed paths

  • Introduced through: debian:stretch-20200514@* shadow/login@1:4.4-4.1
  • Introduced through: debian:stretch-20200514@* shadow/passwd@1:4.4-4.1

Overview

An issue was discovered in shadow 4.5. newgidmap (in shadow-utils) is setuid and allows an unprivileged user to be placed in a user namespace where setgroups(2) is permitted. This allows an attacker to remove themselves from a supplementary group, which may allow access to certain filesystem paths if the administrator has used "group blacklisting" (e.g., chmod g-rwx) to restrict access to paths. This flaw effectively reverts a security feature in the kernel (in particular, the /proc/self/setgroups knob) to prevent this sort of privilege escalation.

References

low severity

Incorrect Permission Assignment for Critical Resource

  • Vulnerable module: shadow/login
  • Introduced through: shadow/login@1:4.4-4.1 and shadow/passwd@1:4.4-4.1

Detailed paths

  • Introduced through: debian:stretch-20200514@* shadow/login@1:4.4-4.1
  • Introduced through: debian:stretch-20200514@* shadow/passwd@1:4.4-4.1

Overview

shadow 4.8, in certain circumstances affecting at least Gentoo, Arch Linux, and Void Linux, allows local users to obtain root access because setuid programs are misconfigured. Specifically, this affects shadow 4.8 when compiled using --with-libpam but without explicitly passing --disable-account-tools-setuid, and without a PAM configuration suitable for use with setuid account management tools. This combination leads to account management tools (groupadd, groupdel, groupmod, useradd, userdel, usermod) that can easily be used by unprivileged local users to escalate privileges to root in multiple ways. This issue became much more relevant in approximately December 2019 when an unrelated bug was fixed (i.e., the chmod calls to suidusbins were fixed in the upstream Makefile which is now included in the release version 4.8).

References

low severity

Time-of-check Time-of-use (TOCTOU)

  • Vulnerable module: shadow/login
  • Introduced through: shadow/login@1:4.4-4.1 and shadow/passwd@1:4.4-4.1

Detailed paths

  • Introduced through: debian:stretch-20200514@* shadow/login@1:4.4-4.1
  • Introduced through: debian:stretch-20200514@* shadow/passwd@1:4.4-4.1

Overview

shadow: TOCTOU (time-of-check time-of-use) race condition when copying and removing directory trees

References

low severity

Access Restriction Bypass

  • Vulnerable module: systemd/libsystemd0
  • Introduced through: systemd/libsystemd0@232-25+deb9u12 and systemd/libudev1@232-25+deb9u12

Detailed paths

  • Introduced through: debian:stretch-20200514@* systemd/libsystemd0@232-25+deb9u12
  • Introduced through: debian:stretch-20200514@* systemd/libudev1@232-25+deb9u12

Overview

systemd-tmpfiles in systemd through 237 mishandles symlinks present in non-terminal path components, which allows local users to obtain ownership of arbitrary files via vectors involving creation of a directory and a file under that directory, and later replacing that directory with a symlink. This occurs even if the fs.protected_symlinks sysctl is turned on.

References

low severity

CVE-2019-9619

  • Vulnerable module: systemd/libsystemd0
  • Introduced through: systemd/libsystemd0@232-25+deb9u12 and systemd/libudev1@232-25+deb9u12

Detailed paths

  • Introduced through: debian:stretch-20200514@* systemd/libsystemd0@232-25+deb9u12
  • Introduced through: debian:stretch-20200514@* systemd/libudev1@232-25+deb9u12

Overview

CVE-2019-9619

References

low severity

Improper Input Validation

  • Vulnerable module: systemd/libsystemd0
  • Introduced through: systemd/libsystemd0@232-25+deb9u12 and systemd/libudev1@232-25+deb9u12

Detailed paths

  • Introduced through: debian:stretch-20200514@* systemd/libsystemd0@232-25+deb9u12
  • Introduced through: debian:stretch-20200514@* systemd/libudev1@232-25+deb9u12

Overview

It was discovered systemd does not correctly check the content of PIDFile files before using it to kill processes. When a service is run from an unprivileged user (e.g. User field set in the service file), a local attacker who is able to write to the PIDFile of the mentioned service may use this flaw to trick systemd into killing other services and/or privileged processes. Versions before v237 are vulnerable.

References

low severity

Improper Input Validation

  • Vulnerable module: systemd/libsystemd0
  • Introduced through: systemd/libsystemd0@232-25+deb9u12 and systemd/libudev1@232-25+deb9u12

Detailed paths

  • Introduced through: debian:stretch-20200514@* systemd/libsystemd0@232-25+deb9u12
  • Introduced through: debian:stretch-20200514@* systemd/libudev1@232-25+deb9u12

Overview

systemd v233 and earlier fails to safely parse usernames starting with a numeric digit (e.g. "0day"), running the service in question with root privileges rather than the user intended.

References

low severity

Improper Input Validation

  • Vulnerable module: systemd/libsystemd0
  • Introduced through: systemd/libsystemd0@232-25+deb9u12 and systemd/libudev1@232-25+deb9u12

Detailed paths

  • Introduced through: debian:stretch-20200514@* systemd/libsystemd0@232-25+deb9u12
  • Introduced through: debian:stretch-20200514@* systemd/libudev1@232-25+deb9u12

Overview

Affected versions of this package are vulnerable to Improper Input Validation systemd through v245 mishandles numerical usernames such as ones composed of decimal digits or 0x followed by hex digits, as demonstrated by use of root privileges when privileges of the 0x0 user account were intended. NOTE: this issue exists because of an incomplete fix for CVE-2017-1000082.

Remediation

There is no fixed version for systemd.

References

low severity

Link Following

  • Vulnerable module: systemd/libsystemd0
  • Introduced through: systemd/libsystemd0@232-25+deb9u12 and systemd/libudev1@232-25+deb9u12

Detailed paths

  • Introduced through: debian:stretch-20200514@* systemd/libsystemd0@232-25+deb9u12
  • Introduced through: debian:stretch-20200514@* systemd/libudev1@232-25+deb9u12

Overview

systemd, when updating file permissions, allows local users to change the permissions and SELinux security contexts for arbitrary files via a symlink attack on unspecified files.

References

low severity

Link Following

  • Vulnerable module: systemd/libsystemd0
  • Introduced through: systemd/libsystemd0@232-25+deb9u12 and systemd/libudev1@232-25+deb9u12

Detailed paths

  • Introduced through: debian:stretch-20200514@* systemd/libsystemd0@232-25+deb9u12
  • Introduced through: debian:stretch-20200514@* systemd/libudev1@232-25+deb9u12

Overview

systemd-tmpfiles in systemd before 237 attempts to support ownership/permission changes on hardlinked files even if the fs.protected_hardlinks sysctl is turned off, which allows local users to bypass intended access restrictions via vectors involving a hard link to a file for which the user lacks write access, as demonstrated by changing the ownership of the /etc/passwd file.

References

low severity

Missing Release of Resource after Effective Lifetime

  • Vulnerable module: systemd/libsystemd0
  • Introduced through: systemd/libsystemd0@232-25+deb9u12 and systemd/libudev1@232-25+deb9u12

Detailed paths

  • Introduced through: debian:stretch-20200514@* systemd/libsystemd0@232-25+deb9u12
  • Introduced through: debian:stretch-20200514@* systemd/libudev1@232-25+deb9u12

Overview

An issue was discovered in button_open in login/logind-button.c in systemd before 243. When executing the udevadm trigger command, a memory leak may occur.

References

low severity

CVE-2005-2541

  • Vulnerable module: tar
  • Introduced through: tar@1.29b-1.1

Detailed paths

  • Introduced through: debian:stretch-20200514@* tar@1.29b-1.1

Overview

Tar 1.15.1 does not properly warn the user when extracting setuid or setgid files, which may allow local users or remote attackers to gain privileges.

This is considered intended behaviour, as tar is an archiving tool and one needs to give -p as a command line flag

References

low severity

CVE-2021-20193

  • Vulnerable module: tar
  • Introduced through: tar@1.29b-1.1

Detailed paths

  • Introduced through: debian:stretch-20200514@* tar@1.29b-1.1

Overview

Affected versions of this package are vulnerable to CVE-2021-20193.

Remediation

There is no fixed version for tar.

References

low severity

NULL Pointer Dereference

  • Vulnerable module: tar
  • Introduced through: tar@1.29b-1.1

Detailed paths

  • Introduced through: debian:stretch-20200514@* tar@1.29b-1.1

Overview

pax_decode_header in sparse.c in GNU Tar before 1.32 had a NULL pointer dereference when parsing certain archives that have malformed extended headers.

References