Docker fluent/fluentd:v1.3.2-debian

Overview

Incorrect sanitation of the 302 redirect field in HTTP transport method of apt versions 1.4.8 and earlier can lead to content injection by a MITM attacker, potentially leading to remote code execution on the target machine.

References

• Apache Security Advisory
• Debian Security Advisory
• Debian Security Announcement
• Debian Security Announcement
• Debian Security Tracker
• Netapp Security Advisory
• Security Focus
• Ubuntu CVE Tracker
• Ubuntu Security Advisory
• Ubuntu Security Advisory

Overview

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

References

• BUGTRAQ
• BUGTRAQ
• CONFIRM
• CVE Details
• Debian Security Announcement
• Debian Security Tracker
• FREEBSD
• MISC
• MISC
• MISC
• MISC
• MLIST
• MLIST
• MLIST
• MLIST
• SUSE
• SUSE
• SUSE
• SUSE
• UBUNTU
• UBUNTU
• Ubuntu CVE Tracker
• Ubuntu Security Advisory
• Ubuntu Security Advisory

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

• CONFIRM
• Debian Security Tracker
• MISC

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

• CONFIRM
• CONFIRM
• Debian Security Tracker
• MISC
• MISC
• MISC
• MISC
• MISC
• MISC
• MISC
• Netapp Security Advisory
• Ubuntu CVE Tracker

Overview

A memory leak in glibc 2.1.1 (released on May 24, 1999) can be reached and amplified through the LD_HWCAP_MASK environment variable. Please note that many versions of glibc are not vulnerable to this issue if patched for CVE-2017-1000366.

References

• Debian Security Tracker
• Exploit DB
• Netapp Security Advisory
• OSS security Advisory
• OSS security Advisory
• OSS security Advisory
• Oss-Sec Mailing List
• Ubuntu CVE Tracker

Overview

The glob function in glob.c in the GNU C Library (aka glibc or libc6) before 2.27 contains a buffer overflow during unescaping of user names with the ~ operator.

References

• CONFIRM
• CONFIRM
• Debian Security Tracker
• RHSA Security Advisory
• RHSA Security Advisory
• Security Focus
• Ubuntu CVE Tracker

Overview

A buffer overflow in glibc 2.5 (released on September 29, 2006) and can be triggered through the LD_LIBRARY_PATH environment variable. Please note that many versions of glibc are not vulnerable to this issue if patched for CVE-2017-1000366.

References

• Debian Security Tracker
• Exploit DB
• Netapp Security Advisory
• Oss-Sec Mailing List
• Ubuntu CVE Tracker

Overview

The GNU C Library (aka glibc or libc6) before 2.27 contains an off-by-one error leading to a heap-based buffer overflow in the glob function in glob.c, related to the processing of home directories using the ~ operator followed by a long string.

References

• CONFIRM
• Debian Security Tracker
• RHSA Security Advisory
• RHSA Security Advisory
• Security Focus
• Ubuntu CVE Tracker

Overview

An SSE2-optimized memmove implementation for i386 in sysdeps/i386/i686/multiarch/memcpy-sse2-unaligned.S in the GNU C Library (aka glibc or libc6) 2.21 through 2.27 does not correctly perform the overlapping memory check if the source memory range spans the middle of the address space, resulting in corrupt data being produced by the copy operation. This may disclose information to context-dependent attackers, or result in a denial of service, or, possibly, code execution.

References

• Debian Security Tracker
• MISC
• MISC
• MISC
• Netapp Security Advisory
• Netapp Security Advisory
• UBUNTU
• Ubuntu CVE Tracker

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

• CONFIRM
• CONFIRM
• Debian Security Tracker
• GENTOO
• MISC
• MISC
• MISC
• MISC
• Netapp Security Advisory
• Security Focus
• UBUNTU
• Ubuntu CVE Tracker

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

• CONFIRM
• Debian Bug Report
• Debian Security Tracker
• Netapp Security Advisory
• Oracle Security Advisory
• REDHAT
• RHSA Security Advisory
• Security Focus
• UBUNTU
• Ubuntu CVE Tracker
• Ubuntu Security Advisory

Overview

stdlib/canonicalize.c in the GNU C Library (aka glibc or libc6) 2.27 and earlier, when processing very long pathname arguments to the realpath function, could encounter an integer overflow on 32-bit architectures, leading to a stack-based buffer overflow and, potentially, arbitrary code execution.

References

• Debian Security Tracker
• MISC
• MISC
• Netapp Security Advisory
• Netapp Security Advisory
• Oracle Security Advisory
• REDHAT
• RHSA Security Advisory
• Security Focus
• UBUNTU
• Ubuntu CVE Tracker

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

• Debian Security Tracker
• Exploit DB
• Exploit DB
• MISC
• Netapp Security Advisory
• Oss-Sec Mailing List
• RHSA Security Advisory
• Security Focus
• Security Tracker
• Ubuntu CVE Tracker
• Ubuntu Security Advisory
• Ubuntu Security Advisory

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

• CONFIRM
• CONFIRM
• Debian Security Tracker
• Netapp Security Advisory

Overview

An AVX-512-optimized implementation of the mempcpy function in the GNU C Library (aka glibc or libc6) 2.27 and earlier may write data beyond the target buffer, leading to a buffer overflow in __mempcpy_avx512_no_vzeroupper.

References

• Debian Security Tracker
• Exploit DB
• MISC
• Netapp Security Advisory
• Netapp Security Advisory
• Oracle Security Advisory
• REDHAT
• RHSA Security Advisory
• Security Focus
• UBUNTU
• Ubuntu CVE Tracker

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

• ADVISORY
• Debian Security Tracker
• GENTOO
• MISC
• Netapp Security Advisory
• RedHat Bugzilla Bug
• UBUNTU

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

• ADVISORY
• MISC
• MISC
• MLIST

Overview

elf/dl-load.c in the GNU C Library (aka glibc or libc6) 2.19 through 2.26 mishandles RPATH and RUNPATH containing $ORIGIN for a privileged (setuid or AT_SECURE) program, which allows local users to gain privileges via a Trojan horse library in the current working directory, related to the fillin_rpath and decompose_rpath functions. This is associated with misinterpretion of an empty RPATH/RUNPATH token as the "./" directory. NOTE: this configuration of RPATH/RUNPATH for a privileged program is apparently very uncommon; most likely, no such program is shipped with any common Linux distribution.

References

• CONFIRM
• CONFIRM
• Debian Bug Report
• Debian Security Tracker
• REDHAT
• RHSA Security Advisory
• Security Focus
• Ubuntu CVE Tracker

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

• CONFIRM
• CONFIRM
• Debian Security Tracker
• GENTOO
• Netapp Security Advisory
• RedHat Bugzilla Bug
• UBUNTU
• Ubuntu CVE Tracker

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

• Debian Security Tracker
• MISC
• MISC
• Ubuntu CVE Tracker
• Ubuntu Security Advisory

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

• CVE Details
• Debian Security Tracker
• MISC
• MISC
• RedHat Bugzilla Bug

Overview

ChaCha20-Poly1305 is an AEAD cipher, and requires a unique nonce input for every encryption operation. RFC 7539 specifies that the nonce value (IV) should be 96 bits (12 bytes). OpenSSL allows a variable nonce length and front pads the nonce with 0 bytes if it is less than 12 bytes. However it also incorrectly allows a nonce to be set of up to 16 bytes. In this case only the last 12 bytes are significant and any additional leading bytes are ignored. It is a requirement of using this cipher that nonce values are unique. Messages encrypted using a reused nonce value are susceptible to serious confidentiality and integrity attacks. If an application changes the default nonce length to be longer than 12 bytes and then makes a change to the leading bytes of the nonce expecting the new value to be a new unique nonce then such an application could inadvertently encrypt messages with a reused nonce. Additionally the ignored bytes in a long nonce are not covered by the integrity guarantee of this cipher. Any application that relies on the integrity of these ignored leading bytes of a long nonce may be further affected. Any OpenSSL internal use of this cipher, including in SSL/TLS, is safe because no such use sets such a long nonce value. However user applications that use this cipher directly and set a non-default nonce length to be longer than 12 bytes may be vulnerable. OpenSSL versions 1.1.1 and 1.1.0 are affected by this issue. Due to the limited scope of affected deployments this has been assessed as low severity and therefore we are not creating new releases at this time. Fixed in OpenSSL 1.1.1c (Affected 1.1.1-1.1.1b). Fixed in OpenSSL 1.1.0k (Affected 1.1.0-1.1.0j).

References

• BUGTRAQ
• CONFIRM
• CONFIRM
• CVE Details
• DEBIAN
• Debian Security Tracker
• FEDORA
• FEDORA
• MISC
• MISC
• N/A
• OpenSSL Security Advisory
• REDHAT
• SUSE
• Ubuntu CVE Tracker

Overview

Affected versions of this package are vulnerable to Integer Overflow or Wraparound. Calls to EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate may overflow the output length argument in some cases where the input length is close to the maximum permissable length for an integer on the platform. In such cases the return value from the function call will be 1 (indicating success), but the output length value will be negative. This could cause applications to behave incorrectly or crash. OpenSSL versions 1.1.1i and below are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL 1.0.2 is out of support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x).

Remediation

Upgrade openssl to version or higher.

References

• ADVISORY
• CONFIRM
• CONFIRM
• CONFIRM
• CONFIRM
• DEBIAN

Overview

Affected versions of this package are vulnerable to Integer Overflow or Wraparound. The OpenSSL public API function X509_issuer_and_serial_hash() attempts to create a unique hash value based on the issuer and serial number data contained within an X509 certificate. However it fails to correctly handle any errors that may occur while parsing the issuer field (which might occur if the issuer field is maliciously constructed). This may subsequently result in a NULL pointer deref and a crash leading to a potential denial of service attack. The function X509_issuer_and_serial_hash() is never directly called by OpenSSL itself so applications are only vulnerable if they use this function directly and they use it on certificates that may have been obtained from untrusted sources. OpenSSL versions 1.1.1i and below are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL 1.0.2 is out of support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x).

Remediation

Upgrade openssl to version or higher.

References

• ADVISORY
• CONFIRM
• CONFIRM
• CONFIRM
• CONFIRM
• CONFIRM
• CONFIRM
• DEBIAN

Overview

Affected versions of this package are vulnerable to Integer Overflow or Wraparound. The OpenSSL public API function X509_issuer_and_serial_hash() attempts to create a unique hash value based on the issuer and serial number data contained within an X509 certificate. However it fails to correctly handle any errors that may occur while parsing the issuer field (which might occur if the issuer field is maliciously constructed). This may subsequently result in a NULL pointer deref and a crash leading to a potential denial of service attack. The function X509_issuer_and_serial_hash() is never directly called by OpenSSL itself so applications are only vulnerable if they use this function directly and they use it on certificates that may have been obtained from untrusted sources. OpenSSL versions 1.1.1i and below are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL 1.0.2 is out of support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x).

Remediation

Upgrade openssl1.0 to version or higher.

References

• ADVISORY
• CONFIRM
• CONFIRM
• CONFIRM
• CONFIRM
• CONFIRM
• CONFIRM
• DEBIAN

Overview

Affected versions of this package are vulnerable to Integer Overflow or Wraparound. Calls to EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate may overflow the output length argument in some cases where the input length is close to the maximum permissable length for an integer on the platform. In such cases the return value from the function call will be 1 (indicating success), but the output length value will be negative. This could cause applications to behave incorrectly or crash. OpenSSL versions 1.1.1i and below are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL 1.0.2 is out of support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x).

Remediation

Upgrade openssl1.0 to version or higher.

References

• ADVISORY
• CONFIRM
• CONFIRM
• CONFIRM
• CONFIRM
• DEBIAN

Overview

During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack. Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h). Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2-1.0.2o).

References

• CONFIRM
• CONFIRM
• CONFIRM
• CONFIRM
• CONFIRM
• CONFIRM
• CONFIRM
• CONFIRM
• CVE Details
• Debian Security Advisory
• Debian Security Advisory
• Debian Security Announcement
• Debian Security Tracker
• FEDORA
• FEDORA
• FEDORA
• Gentoo Security Advisory
• MISC
• MISC
• MISC
• N/A
• Netapp Security Advisory
• Netapp Security Advisory
• OpenSSL Security Advisory
• Oracle Security Advisory
• Oracle Security Advisory
• Oracle Security Advisory
• REDHAT
• RHSA Security Advisory
• RHSA Security Advisory
• RHSA Security Advisory
• RHSA Security Advisory
• RHSA Security Advisory
• RHSA Security Advisory
• Security Focus
• Security Tracker
• Ubuntu CVE Tracker
• Ubuntu Security Advisory
• Ubuntu Security Advisory

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

• CONFIRM
• CONFIRM
• CONFIRM
• CONFIRM
• Debian Security Tracker
• FEDORA
• GENTOO
• MISC
• MISC
• MISC
• MISC
• SUSE
• Ubuntu CVE Tracker

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

• CONFIRM
• CONFIRM
• CONFIRM
• CONFIRM
• CONFIRM
• Debian Security Tracker
• FEDORA
• GENTOO
• MISC
• MISC
• SUSE
• Ubuntu CVE Tracker

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

• CONFIRM
• CONFIRM
• CONFIRM
• CONFIRM
• Debian Security Tracker
• FEDORA
• GENTOO
• MISC
• MISC
• SUSE
• Ubuntu CVE Tracker

Overview

An issue was discovered in RubyGems 2.6 and later through 3.0.2. Since Gem::UserInteraction#verbose calls say without escaping, escape sequence injection is possible.

References

• CVE Details
• Debian Security Tracker
• HackerOne Report
• MLIST
• OpenSuse Security Announcement
• Ubuntu CVE Tracker

Overview

An issue was discovered in RubyGems 2.6 and later through 3.0.2. Since Gem::CommandManager#run calls alert_error without escaping, escape sequence injection is possible. (There are many ways to cause an error.)

References

• CVE Details
• Debian Security Tracker
• HackerOne Report
• MLIST
• OpenSuse Security Announcement
• Ubuntu CVE Tracker

Overview

An issue was discovered in RubyGems 2.6 and later through 3.0.2. The gem owner command outputs the contents of the API response directly to stdout. Therefore, if the response is crafted, escape sequence injection may occur.

References

• CVE Details
• Debian Security Tracker
• HackerOne Report
• MLIST
• OpenSuse Security Announcement
• Ubuntu CVE Tracker

Overview

An issue was discovered in RubyGems 2.6 and later through 3.0.2. A crafted gem with a multi-line name is not handled correctly. Therefore, an attacker could inject arbitrary code to the stub line of gemspec, which is eval-ed by code in ensure_loadable_spec during the preinstall check.

References

• CVE Details
• Debian Security Tracker
• HackerOne Report
• MLIST
• OpenSuse Security Announcement
• REDHAT
• Ubuntu CVE Tracker

Overview

An issue was discovered in RubyGems 2.6 and later through 3.0.2. Gem::GemcutterUtilities#with_response may output the API response to stdout as it is. Therefore, if the API side modifies the response, escape sequence injection may occur.

References

• CVE Details
• Debian Security Tracker
• HackerOne Report
• MLIST
• OpenSuse Security Announcement
• Ubuntu CVE Tracker

Overview

Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows code injection if the first argument (aka the "command" argument) to Shell#[] or Shell#test in lib/shell.rb is untrusted data. An attacker can exploit this to call an arbitrary Ruby method.

References

• Bugtraq Mailing List
• Bugtraq Mailing List
• CONFIRM
• CONFIRM
• CONFIRM
• CONFIRM
• CVE Details
• Debian Security Advisory
• Debian Security Announcement
• Debian Security Announcement
• Debian Security Tracker
• GENTOO
• HackerOne Report
• MISC
• MLIST
• SUSE
• Ubuntu CVE Tracker

Overview

A Directory Traversal issue was discovered in RubyGems 2.7.6 and later through 3.0.2. Before making new directories or touching files (which now include path-checking code for symlinks), it would delete the target destination. If that destination was hidden behind a symlink, a malicious gem could delete arbitrary files on the user's machine, presuming the attacker could guess at paths. Given how frequently gem is run as sudo, and how predictable paths are on modern systems (/tmp, /usr, etc.), this could likely lead to data loss or an unusable system.

References

• CONFIRM
• CVE Details
• Debian Security Tracker
• HackerOne Report
• MLIST
• RHSA Security Advisory
• SUSE
• Ubuntu CVE Tracker

Overview

Affected versions of this package are vulnerable to HTTP Request Smuggling. An issue was discovered in Ruby through 2.5.8, 2.6.x through 2.6.6, and 2.7.x through 2.7.1. WEBrick, a simple HTTP server bundled with Ruby, had not checked the transfer-encoding header value rigorously. An attacker may potentially exploit this issue to bypass a reverse proxy (which also has a poor header check), which may lead to an HTTP Request Smuggling attack.

Remediation

Upgrade ruby2.3 to version or higher.

References

• ADVISORY
• CONFIRM
• CONFIRM
• CONFIRM
• FEDORA
• FEDORA
• MISC

Overview

WEBrick::HTTPAuth::DigestAuth in Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 has a regular expression Denial of Service cause by looping/backtracking. A victim must expose a WEBrick server that uses DigestAuth to the Internet or a untrusted network.

References

• Bugtraq Mailing List
• Bugtraq Mailing List
• CVE Details
• Debian Security Advisory
• Debian Security Announcement
• Debian Security Announcement
• Debian Security Tracker
• GENTOO
• HackerOne Report
• MISC
• MLIST
• SUSE
• Ubuntu CVE Tracker

Overview

The JSON gem through 2.2.0 for Ruby, as used in Ruby 2.4 through 2.4.9, 2.5 through 2.5.7, and 2.6 through 2.6.5, has an Unsafe Object Creation Vulnerability. This is quite similar to CVE-2013-0269, but does not rely on poor garbage-collection behavior within Ruby. Specifically, use of JSON parsing methods can lead to creation of a malicious object within the interpreter, with adverse effects that are application-dependent.

References

• CONFIRM
• CONFIRM
• CONFIRM
• DEBIAN
• Debian Security Announcement
• Debian Security Tracker
• FEDORA
• FULLDISC
• Fedora Security Update
• Fedora Security Update
• MLIST
• MLIST
• MLIST
• MLIST
• MLIST
• MLIST
• MLIST
• OpenSuse Security Announcement

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

• CVE Details
• Debian Bug Report
• Debian Security Tracker
• Gentoo Security Advisory
• GitHub Commit
• Ubuntu CVE Tracker
• https://bugs.launchpad.net/ubuntu/+source/shadow/+bug/1266675

Overview

In systemd before v242-rc4, it was discovered that pam_systemd does not properly sanitize the environment before using the XDG_SEAT variable. It is possible for an attacker, in some particular configurations, to set a XDG_SEAT environment variable which allows for commands to be checked against polkit policies using the "allow_active" element rather than "allow_any".

References

• Debian Security Announcement
• Debian Security Tracker
• Exploit DB
• Fedora Security Update
• MISC
• OpenSuse Security Announcement
• RedHat Bugzilla Bug
• Ubuntu CVE Tracker

Overview

An allocation of memory without limits, that could result in the stack clashing with another memory region, was discovered in systemd-journald when a program with long command line arguments calls syslog. A local attacker may use this flaw to crash systemd-journald or escalate his privileges. Versions through v240 are vulnerable.

References

• Debian Security Advisory
• Debian Security Announcement
• Debian Security Tracker
• Gentoo Security Advisory
• MISC
• Netapp Security Advisory
• Oracle Security Advisory
• REDHAT
• RHSA Security Advisory
• RHSA Security Advisory
• RHSA Security Advisory
• RHSA Security Advisory
• RHSA Security Advisory
• RHSA Security Advisory
• RedHat Bugzilla Bug
• Security Focus
• Ubuntu CVE Tracker
• Ubuntu Security Advisory

Overview

An allocation of memory without limits, that could result in the stack clashing with another memory region, was discovered in systemd-journald when many entries are sent to the journal socket. A local attacker, or a remote one if systemd-journal-remote is used, may use this flaw to crash systemd-journald or execute code with journald privileges. Versions through v240 are vulnerable.

References

• Bugtraq Mailing List
• Debian Security Advisory
• Debian Security Announcement
• Debian Security Tracker
• Gentoo Security Advisory
• MISC
• MISC
• Netapp Security Advisory
• OSS security Advisory
• Oracle Security Advisory
• REDHAT
• RHSA Security Advisory
• RHSA Security Advisory
• RHSA Security Advisory
• RHSA Security Advisory
• RHSA Security Advisory
• RHSA Security Advisory
• RedHat Bugzilla Bug
• Seclists Full Disclosure
• Security Focus
• Ubuntu CVE Tracker
• Ubuntu Security Advisory

Overview

A vulnerability in unit_deserialize of systemd allows an attacker to supply arbitrary state across systemd re-execution via NotifyAccess. This can be used to improperly influence systemd execution and possibly lead to root privilege escalation. Affected releases are systemd versions up to and including 239.

References

• Debian Security Announcement
• Debian Security Tracker
• Exploit DB
• Gentoo Security Advisory
• GitHub PR
• MLIST
• REDHAT
• REDHAT
• RHSA Security Advisory
• Security Focus
• Ubuntu CVE Tracker
• Ubuntu Security Advisory

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

• Debian Security Tracker
• Fedora Security Update
• Netapp Security Advisory
• RedHat Bugzilla Bug
• Security Focus
• UBUNTU
• Ubuntu CVE Tracker

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

• Debian Security Tracker
• GitHub Commit
• GitHub PR
• MISC
• MLIST
• Netapp Security Advisory
• Security Focus
• Ubuntu CVE Tracker

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

• Debian Security Tracker
• Netapp Security Advisory
• RedHat Bugzilla Bug
• Security Focus
• UBUNTU
• Ubuntu CVE Tracker

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

• Debian Security Tracker
• GitHub Commit
• GitHub Commit
• GitHub Commit
• GitHub Commit
• OSS security Advisory
• RedHat Bugzilla Bug
• Ubuntu CVE Tracker

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

• Debian Bug Report
• Debian Security Tracker
• OSS security Advisory
• OSS security Advisory
• Ubuntu CVE Tracker