NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

The mq_notify function in the GNU C Library (aka glibc) versions 2.32 and 2.33 has a use-after-free. It may use the notification thread attributes object (passed through its struct sigevent parameter) after it has been freed by the caller, leading to a denial of service (application crash) or possibly unspecified other impact.

Remediation

There is no fixed version for Ubuntu:18.04 glibc.

References

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2021-33574
• https://security.netapp.com/advisory/ntap-20210629-0005/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RBUUWUGXVILQXVWEOU7N42ICHPJNAEUP/
• https://security.gentoo.org/glsa/202107-07
• https://sourceware.org/bugzilla/show_bug.cgi?id=27896
• https://sourceware.org/bugzilla/show_bug.cgi?id=27896#c1
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KJYYIMDDYOHTP2PORLABTOHYQYYREZDD/
• https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KJYYIMDDYOHTP2PORLABTOHYQYYREZDD/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RBUUWUGXVILQXVWEOU7N42ICHPJNAEUP/

NVD Description

Note: Versions mentioned in the description apply only to the upstream systemd package and not the systemd package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

systemd before 247 does not adequately block local privilege escalation for some Sudo configurations, e.g., plausible sudoers files in which the "systemctl status" command may be executed. Specifically, systemd does not set LESSSECURE to 1, and thus other programs may be launched from the less program. This presents a substantial security risk when running systemctl from Sudo, because less executes as root when the terminal size is too small to show the complete systemctl output.

Remediation

There is no fixed version for Ubuntu:18.04 systemd.

References

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2023-26604
• https://blog.compass-security.com/2012/10/dangerous-sudoers-entries-part-2-insecure-functionality/
• https://github.com/systemd/systemd/blob/main/NEWS#L4335-L4340
• https://medium.com/@zenmoviefornotification/saidov-maxim-cve-2023-26604-c1232a526ba7
• https://lists.debian.org/debian-lts-announce/2023/03/msg00032.html
• https://security.netapp.com/advisory/ntap-20230505-0009/
• http://packetstormsecurity.com/files/174130/systemd-246-Local-Root-Privilege-Escalation.html
• https://medium.com/%40zenmoviefornotification/saidov-maxim-cve-2023-26604-c1232a526ba7
• https://www.exploit-db.com/exploits/51674

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

sha256crypt and sha512crypt through 0.6 allow attackers to cause a denial of service (CPU consumption) because the algorithm's runtime is proportional to the square of the length of the password.

Remediation

There is no fixed version for Ubuntu:18.04 glibc.

References

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2016-20013
• https://twitter.com/solardiz/status/795601240151457793
• https://pthree.org/2018/05/23/do-not-use-sha256crypt-sha512crypt-theyre-dangerous/
• https://akkadia.org/drepper/SHA-crypt.txt

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

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.

Remediation

There is no fixed version for Ubuntu:18.04 glibc.

References

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2009-5155
• https://support.f5.com/csp/article/K64119434
• https://support.f5.com/csp/article/K64119434?utm_source=f5support&utm_medium=RSS
• https://security-tracker.debian.org/tracker/CVE-2009-5155
• http://git.savannah.gnu.org/cgit/gnulib.git/commit/?id=5513b40999149090987a0341c018d05d3eea1272
• https://debbugs.gnu.org/cgi/bugreport.cgi?bug=22793
• https://debbugs.gnu.org/cgi/bugreport.cgi?bug=32806
• https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34238
• https://sourceware.org/bugzilla/show_bug.cgi?id=11053
• https://sourceware.org/bugzilla/show_bug.cgi?id=18986
• https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=eb04c21373e2a2885f3d52ff192b0499afe3c672
• https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E
• https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E
• https://security.netapp.com/advisory/ntap-20190315-0002/
• https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
• https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
• https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=eb04c21373e2a2885f3d52ff192b0499afe3c672
• https://support.f5.com/csp/article/K64119434?utm_source=f5support&amp%3Butm_medium=RSS

NVD Description

Note: Versions mentioned in the description apply only to the upstream krb5 package and not the krb5 package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

An issue was discovered in MIT Kerberos 5 (aka krb5) through 1.16. There is a variable "dbentry->n_key_data" in kadmin/dbutil/dump.c that can store 16-bit data but unknowingly the developer has assigned a "u4" variable to it, which is for 32-bit data. An attacker can use this vulnerability to affect other artifacts of the database as we know that a Kerberos database dump file contains trusted data.

Remediation

There is no fixed version for Ubuntu:18.04 krb5.

References

• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5709
• https://security-tracker.debian.org/tracker/CVE-2018-5709
• https://github.com/poojamnit/Kerberos-V5-1.16-Vulnerabilities/tree/master/Integer%20Overflow
• https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E
• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-5709
• https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E

NVD Description

Note: Versions mentioned in the description apply only to the upstream openldap package and not the openldap package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

A vulnerability was found in openldap. This security flaw causes a null pointer dereference in ber_memalloc_x() function.

Remediation

Upgrade Ubuntu:18.04 openldap to version 2.4.45+dfsg-1ubuntu1.11+esm1 or higher.

References

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2023-2953
• https://access.redhat.com/security/cve/CVE-2023-2953
• https://bugs.openldap.org/show_bug.cgi?id=9904
• https://security.netapp.com/advisory/ntap-20230703-0005/
• https://support.apple.com/kb/HT213843
• https://support.apple.com/kb/HT213844
• https://support.apple.com/kb/HT213845
• http://seclists.org/fulldisclosure/2023/Jul/47
• http://seclists.org/fulldisclosure/2023/Jul/48
• http://seclists.org/fulldisclosure/2023/Jul/52

NVD Description

Note: Versions mentioned in the description apply only to the upstream pcre3 package and not the pcre3 package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

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.

Remediation

There is no fixed version for Ubuntu:18.04 pcre3.

References

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-11164
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-11164
• https://security-tracker.debian.org/tracker/CVE-2017-11164
• https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E
• http://openwall.com/lists/oss-security/2017/07/11/3
• http://www.securityfocus.com/bid/99575
• http://www.openwall.com/lists/oss-security/2023/04/11/1
• http://www.openwall.com/lists/oss-security/2023/04/12/1
• https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E

NVD Description

Note: Versions mentioned in the description apply only to the upstream coreutils package and not the coreutils package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

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.

Remediation

There is no fixed version for Ubuntu:18.04 coreutils.

References

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2016-2781
• https://security-tracker.debian.org/tracker/CVE-2016-2781
• https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E
• http://www.openwall.com/lists/oss-security/2016/02/28/2
• http://www.openwall.com/lists/oss-security/2016/02/28/3
• https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E

NVD Description

Note: Versions mentioned in the description apply only to the upstream ncurses package and not the ncurses package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

NCurse v6.4-20230418 was discovered to contain a segmentation fault via the component _nc_wrap_entry().

Remediation

Upgrade Ubuntu:18.04 ncurses to version 6.1-1ubuntu1.18.04.1+esm2 or higher.

References

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2023-50495
• https://lists.gnu.org/archive/html/bug-ncurses/2023-04/msg00020.html
• https://lists.gnu.org/archive/html/bug-ncurses/2023-04/msg00029.html
• https://security.netapp.com/advisory/ntap-20240119-0008/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LU4MYMKFEZQ5VSCVLRIZGDQOUW3T44GT/

NVD Description

Note: Versions mentioned in the description apply only to the upstream curl package and not the curl package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

An improper certificate validation vulnerability exists in curl <v8.1.0 in the way it supports matching of wildcard patterns when listed as "Subject Alternative Name" in TLS server certificates. curl can be built to use its own name matching function for TLS rather than one provided by a TLS library. This private wildcard matching function would match IDN (International Domain Name) hosts incorrectly and could as a result accept patterns that otherwise should mismatch. IDN hostnames are converted to puny code before used for certificate checks. Puny coded names always start with xn-- and should not be allowed to pattern match, but the wildcard check in curl could still check for x*, which would match even though the IDN name most likely contained nothing even resembling an x.

Remediation

Upgrade Ubuntu:18.04 curl to version 7.58.0-2ubuntu3.24+esm1 or higher.

References

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2023-28321
• https://hackerone.com/reports/1950627
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F4I75RDGX5ULSSCBE5BF3P5I5SFO7ULQ/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Z2LIWHWKOVH24COGGBCVOWDXXIUPKOMK/
• https://security.netapp.com/advisory/ntap-20230609-0009/
• https://support.apple.com/kb/HT213843
• https://support.apple.com/kb/HT213844
• https://support.apple.com/kb/HT213845
• http://seclists.org/fulldisclosure/2023/Jul/47
• http://seclists.org/fulldisclosure/2023/Jul/48
• http://seclists.org/fulldisclosure/2023/Jul/52
• https://security.gentoo.org/glsa/202310-12
• https://lists.debian.org/debian-lts-announce/2023/10/msg00016.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F4I75RDGX5ULSSCBE5BF3P5I5SFO7ULQ/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z2LIWHWKOVH24COGGBCVOWDXXIUPKOMK/

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

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.

Remediation

There is no fixed version for Ubuntu:18.04 glibc.

References

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2015-8985
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=779392
• https://security-tracker.debian.org/tracker/CVE-2015-8985
• https://security.gentoo.org/glsa/201908-06
• http://www.openwall.com/lists/oss-security/2017/02/14/9
• http://www.securityfocus.com/bid/76916

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

A flaw was found in glibc. In an uncommon situation, the gaih_inet function may use memory that has been freed, resulting in an application crash. This issue is only exploitable when the getaddrinfo function is called and the hosts database in /etc/nsswitch.conf is configured with SUCCESS=continue or SUCCESS=merge.

Remediation

Upgrade Ubuntu:18.04 glibc to version 2.27-3ubuntu1.6+esm1 or higher.

References

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2023-4813
• https://access.redhat.com/security/cve/CVE-2023-4813
• https://bugzilla.redhat.com/show_bug.cgi?id=2237798
• http://www.openwall.com/lists/oss-security/2023/10/03/8
• https://access.redhat.com/errata/RHSA-2023:5453
• https://access.redhat.com/errata/RHSA-2023:5455
• https://security.netapp.com/advisory/ntap-20231110-0003/
• https://access.redhat.com/errata/RHSA-2023:7409

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

A flaw was found in glibc. In an extremely rare situation, the getaddrinfo function may access memory that has been freed, resulting in an application crash. This issue is only exploitable when a NSS module implements only the nss_gethostbyname2_r and nss_getcanonname_r hooks without implementing the nss*_gethostbyname3_r hook. The resolved name should return a large number of IPv6 and IPv4, and the call to the getaddrinfo function should have the AF_INET6 address family with AI_CANONNAME, AI_ALL and AI_V4MAPPED as flags.

Remediation

Upgrade Ubuntu:18.04 glibc to version 2.27-3ubuntu1.6+esm1 or higher.

References

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2023-4806
• https://access.redhat.com/security/cve/CVE-2023-4806
• https://bugzilla.redhat.com/show_bug.cgi?id=2237782
• http://www.openwall.com/lists/oss-security/2023/10/03/4
• http://www.openwall.com/lists/oss-security/2023/10/03/5
• http://www.openwall.com/lists/oss-security/2023/10/03/6
• http://www.openwall.com/lists/oss-security/2023/10/03/8
• https://security.gentoo.org/glsa/202310-03
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4DBUQRRPB47TC3NJOUIBVWUGFHBJAFDL/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDAQWHTSVOCOZ5K6KPIWKRT3JX4RTZUR/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DFG4P76UHHZEWQ26FWBXG76N2QLKKPZA/
• https://access.redhat.com/errata/RHSA-2023:5453
• https://access.redhat.com/errata/RHSA-2023:5455
• https://access.redhat.com/errata/RHSA-2023:7409
• https://security.netapp.com/advisory/ntap-20240125-0008/

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnutls28 package and not the gnutls28 package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

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

Remediation

There is no fixed version for Ubuntu:18.04 gnutls28.

References

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-16868
• https://security-tracker.debian.org/tracker/CVE-2018-16868
• http://cat.eyalro.net/
• http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00017.html
• http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00068.html
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16868
• http://www.securityfocus.com/bid/106080

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

Issue summary: Processing a maliciously formatted PKCS12 file may lead OpenSSL to crash leading to a potential Denial of Service attack

Impact summary: Applications loading files in the PKCS12 format from untrusted sources might terminate abruptly.

A file in PKCS12 format can contain certificates and keys and may come from an untrusted source. The PKCS12 specification allows certain fields to be NULL, but OpenSSL does not correctly check for this case. This can lead to a NULL pointer dereference that results in OpenSSL crashing. If an application processes PKCS12 files from an untrusted source using the OpenSSL APIs then that application will be vulnerable to this issue.

OpenSSL APIs that are vulnerable to this are: PKCS12_parse(), PKCS12_unpack_p7data(), PKCS12_unpack_p7encdata(), PKCS12_unpack_authsafes() and PKCS12_newpass().

We have also fixed a similar issue in SMIME_write_PKCS7(). However since this function is related to writing data we do not consider it security significant.

The FIPS modules in 3.2, 3.1 and 3.0 are not affected by this issue.

Remediation

Upgrade Ubuntu:18.04 openssl to version 1.1.1-1ubuntu2.1~18.04.23+esm4 or higher.

References

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2024-0727
• https://github.com/openssl/openssl/commit/09df4395b5071217b76dc7d3d2e630eb8c5a79c2
• https://github.com/openssl/openssl/commit/775acfdbd0c6af9ac855f34969cdab0c0c90844a
• https://github.com/openssl/openssl/commit/d135eeab8a5dbf72b3da5240bab9ddb7678dbd2c
• https://github.openssl.org/openssl/extended-releases/commit/03b3941d60c4bce58fab69a0c22377ab439bc0e8
• https://github.openssl.org/openssl/extended-releases/commit/aebaa5883e31122b404e450732dc833dc9dee539
• https://www.openssl.org/news/secadv/20240125.txt
• https://security.netapp.com/advisory/ntap-20240208-0006/

NVD Description

Note: Versions mentioned in the description apply only to the upstream shadow package and not the shadow package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

A flaw was found in shadow-utils. When asking for a new password, shadow-utils asks the password twice. If the password fails on the second attempt, shadow-utils fails in cleaning the buffer used to store the first entry. This may allow an attacker with enough access to retrieve the password from the memory.

Remediation

Upgrade Ubuntu:18.04 shadow to version 1:4.5-1ubuntu2.5+esm1 or higher.

References

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2023-4641
• https://access.redhat.com/errata/RHSA-2023:6632
• https://access.redhat.com/errata/RHSA-2023:7112
• https://access.redhat.com/security/cve/CVE-2023-4641
• https://bugzilla.redhat.com/show_bug.cgi?id=2215945

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

Issue summary: Checking excessively long DH keys or parameters may be very slow.

Impact summary: Applications that use the functions DH_check(), DH_check_ex() or EVP_PKEY_param_check() to check a DH key or DH parameters may experience long delays. Where the key or parameters that are being checked have been obtained from an untrusted source this may lead to a Denial of Service.

The function DH_check() performs various checks on DH parameters. After fixing CVE-2023-3446 it was discovered that a large q parameter value can also trigger an overly long computation during some of these checks. A correct q value, if present, cannot be larger than the modulus p parameter, thus it is unnecessary to perform these checks if q is larger than p.

An application that calls DH_check() and supplies a key or parameters obtained from an untrusted source could be vulnerable to a Denial of Service attack.

The function DH_check() is itself called by a number of other OpenSSL functions. An application calling any of those other functions may similarly be affected. The other functions affected by this are DH_check_ex() and EVP_PKEY_param_check().

Also vulnerable are the OpenSSL dhparam and pkeyparam command line applications when using the "-check" option.

The OpenSSL SSL/TLS implementation is not affected by this issue.

The OpenSSL 3.0 and 3.1 FIPS providers are not affected by this issue.

Remediation

Upgrade Ubuntu:18.04 openssl to version 1.1.1-1ubuntu2.1~18.04.23+esm3 or higher.

References

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2023-3817
• https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=6a1eb62c29db6cb5eec707f9338aee00f44e26f5
• https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=869ad69aadd985c7b8ca6f4e5dd0eb274c9f3644
• https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=9002fd07327a91f35ba6c1307e71fa6fd4409b7f
• https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=91ddeba0f2269b017dc06c46c993a788974b1aa5
• https://www.openssl.org/news/secadv/20230731.txt
• http://www.openwall.com/lists/oss-security/2023/07/31/1
• http://seclists.org/fulldisclosure/2023/Jul/43
• https://lists.debian.org/debian-lts-announce/2023/08/msg00019.html
• https://security.netapp.com/advisory/ntap-20230818-0014/
• http://www.openwall.com/lists/oss-security/2023/09/22/9
• http://www.openwall.com/lists/oss-security/2023/09/22/11
• https://security.netapp.com/advisory/ntap-20231027-0008/
• http://www.openwall.com/lists/oss-security/2023/11/06/2
• https://security.gentoo.org/glsa/202402-08

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

Issue summary: Generating excessively long X9.42 DH keys or checking excessively long X9.42 DH keys or parameters may be very slow.

Impact summary: Applications that use the functions DH_generate_key() to generate an X9.42 DH key may experience long delays. Likewise, applications that use DH_check_pub_key(), DH_check_pub_key_ex() or EVP_PKEY_public_check() to check an X9.42 DH key or X9.42 DH parameters may experience long delays. Where the key or parameters that are being checked have been obtained from an untrusted source this may lead to a Denial of Service.

While DH_check() performs all the necessary checks (as of CVE-2023-3817), DH_check_pub_key() doesn't make any of these checks, and is therefore vulnerable for excessively large P and Q parameters.

Likewise, while DH_generate_key() performs a check for an excessively large P, it doesn't check for an excessively large Q.

An application that calls DH_generate_key() or DH_check_pub_key() and supplies a key or parameters obtained from an untrusted source could be vulnerable to a Denial of Service attack.

DH_generate_key() and DH_check_pub_key() are also called by a number of other OpenSSL functions. An application calling any of those other functions may similarly be affected. The other functions affected by this are DH_check_pub_key_ex(), EVP_PKEY_public_check(), and EVP_PKEY_generate().

Also vulnerable are the OpenSSL pkey command line application when using the "-pubcheck" option, as well as the OpenSSL genpkey command line application.

The OpenSSL SSL/TLS implementation is not affected by this issue.

The OpenSSL 3.0 and 3.1 FIPS providers are not affected by this issue.

Remediation

Upgrade Ubuntu:18.04 openssl to version 1.1.1-1ubuntu2.1~18.04.23+esm4 or higher.

References

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2023-5678
• https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=34efaef6c103d636ab507a0cc34dca4d3aecc055
• https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=710fee740904b6290fef0dd5536fbcedbc38ff0c
• https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=db925ae2e65d0d925adef429afc37f75bd1c2017
• https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=ddeb4b6c6d527e54ce9a99cba785c0f7776e54b6
• https://www.openssl.org/news/secadv/20231106.txt
• http://www.openwall.com/lists/oss-security/2023/11/06/2
• https://security.netapp.com/advisory/ntap-20231130-0010/

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

Issue summary: Checking excessively long DH keys or parameters may be very slow.

Impact summary: Applications that use the functions DH_check(), DH_check_ex() or EVP_PKEY_param_check() to check a DH key or DH parameters may experience long delays. Where the key or parameters that are being checked have been obtained from an untrusted source this may lead to a Denial of Service.

The function DH_check() performs various checks on DH parameters. One of those checks confirms that the modulus ('p' parameter) is not too large. Trying to use a very large modulus is slow and OpenSSL will not normally use a modulus which is over 10,000 bits in length.

However the DH_check() function checks numerous aspects of the key or parameters that have been supplied. Some of those checks use the supplied modulus value even if it has already been found to be too large.

An application that calls DH_check() and supplies a key or parameters obtained from an untrusted source could be vulernable to a Denial of Service attack.

The function DH_check() is itself called by a number of other OpenSSL functions. An application calling any of those other functions may similarly be affected. The other functions affected by this are DH_check_ex() and EVP_PKEY_param_check().

Also vulnerable are the OpenSSL dhparam and pkeyparam command line applications when using the '-check' option.

The OpenSSL SSL/TLS implementation is not affected by this issue. The OpenSSL 3.0 and 3.1 FIPS providers are not affected by this issue.

Remediation

Upgrade Ubuntu:18.04 openssl to version 1.1.1-1ubuntu2.1~18.04.23+esm3 or higher.

References

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2023-3446
• https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=1fa20cf2f506113c761777127a38bce5068740eb
• https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=8780a896543a654e757db1b9396383f9d8095528
• https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=9a0a4d3c1e7138915563c0df4fe6a3f9377b839c
• https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=fc9867c1e03c22ebf56943be205202e576aabf23
• https://www.openssl.org/news/secadv/20230719.txt
• http://www.openwall.com/lists/oss-security/2023/07/19/4
• http://www.openwall.com/lists/oss-security/2023/07/19/5
• http://www.openwall.com/lists/oss-security/2023/07/19/6
• http://www.openwall.com/lists/oss-security/2023/07/31/1
• https://security.netapp.com/advisory/ntap-20230803-0011/
• https://lists.debian.org/debian-lts-announce/2023/08/msg00019.html
• https://security.gentoo.org/glsa/202402-08

NVD Description

Note: Versions mentioned in the description apply only to the upstream shadow package and not the shadow package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

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

Remediation

There is no fixed version for Ubuntu:18.04 shadow.

References

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2013-4235
• https://security-tracker.debian.org/tracker/CVE-2013-4235
• https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2013-4235
• https://access.redhat.com/security/cve/cve-2013-4235
• https://security.gentoo.org/glsa/202210-26
• https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E

NVD Description

Note: Versions mentioned in the description apply only to the upstream curl package and not the curl package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

An information disclosure vulnerability exists in curl <v8.1.0 when doing HTTP(S) transfers, libcurl might erroneously use the read callback (CURLOPT_READFUNCTION) to ask for data to send, even when the CURLOPT_POSTFIELDS option has been set, if the same handle previously wasused to issue a PUT request which used that callback. This flaw may surprise the application and cause it to misbehave and either send off the wrong data or use memory after free or similar in the second transfer. The problem exists in the logic for a reused handle when it is (expected to be) changed from a PUT to a POST.

Remediation

Upgrade Ubuntu:18.04 curl to version 7.58.0-2ubuntu3.24+esm1 or higher.

References

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2023-28322
• https://hackerone.com/reports/1954658
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F4I75RDGX5ULSSCBE5BF3P5I5SFO7ULQ/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Z2LIWHWKOVH24COGGBCVOWDXXIUPKOMK/
• https://security.netapp.com/advisory/ntap-20230609-0009/
• https://support.apple.com/kb/HT213843
• https://support.apple.com/kb/HT213844
• https://support.apple.com/kb/HT213845
• http://seclists.org/fulldisclosure/2023/Jul/47
• http://seclists.org/fulldisclosure/2023/Jul/48
• http://seclists.org/fulldisclosure/2023/Jul/52
• https://security.gentoo.org/glsa/202310-12
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F4I75RDGX5ULSSCBE5BF3P5I5SFO7ULQ/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z2LIWHWKOVH24COGGBCVOWDXXIUPKOMK/
• https://lists.debian.org/debian-lts-announce/2023/12/msg00015.html

NVD Description

Note: Versions mentioned in the description apply only to the upstream curl package and not the curl package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

This flaw allows an attacker to insert cookies at will into a running program using libcurl, if the specific series of conditions are met.

libcurl performs transfers. In its API, an application creates "easy handles" that are the individual handles for single transfers.

libcurl provides a function call that duplicates en easy handle called curl_easy_duphandle.

If a transfer has cookies enabled when the handle is duplicated, the cookie-enable state is also cloned - but without cloning the actual cookies. If the source handle did not read any cookies from a specific file on disk, the cloned version of the handle would instead store the file name as none (using the four ASCII letters, no quotes).

Subsequent use of the cloned handle that does not explicitly set a source to load cookies from would then inadvertently load cookies from a file named none - if such a file exists and is readable in the current directory of the program using libcurl. And if using the correct file format of course.

Remediation

Upgrade Ubuntu:18.04 curl to version 7.58.0-2ubuntu3.24+esm2 or higher.

References

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2023-38546
• https://curl.se/docs/CVE-2023-38546.html
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OGMXNRNSJ4ETDK6FRNU3J7SABXPWCHSQ/
• https://support.apple.com/kb/HT214057
• https://support.apple.com/kb/HT214058
• https://support.apple.com/kb/HT214063
• https://support.apple.com/kb/HT214036
• http://seclists.org/fulldisclosure/2024/Jan/34
• http://seclists.org/fulldisclosure/2024/Jan/37
• http://seclists.org/fulldisclosure/2024/Jan/38

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnupg2 package and not the gnupg2 package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

GnuPG can be made to spin on a relatively small input by (for example) crafting a public key with thousands of signatures attached, compressed down to just a few KB.

Remediation

There is no fixed version for Ubuntu:18.04 gnupg2.

References

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2022-3219
• https://access.redhat.com/security/cve/CVE-2022-3219
• https://bugzilla.redhat.com/show_bug.cgi?id=2127010
• https://dev.gnupg.org/D556
• https://dev.gnupg.org/T5993
• https://marc.info/?l=oss-security&m=165696590211434&w=4
• https://security.netapp.com/advisory/ntap-20230324-0001/

NVD Description

Note: Versions mentioned in the description apply only to the upstream procps package and not the procps package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

Under some circumstances, this weakness allows a user who has access to run the “ps” utility on a machine, the ability to write almost unlimited amounts of unfiltered data into the process heap.

Remediation

Upgrade Ubuntu:18.04 procps to version 2:3.3.12-3ubuntu1.2+esm1 or higher.

References

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2023-4016
• https://gitlab.com/procps-ng/procps
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SUETRRT24OFGPYK6ACPM5VUGHNKH5CQ5/

NVD Description

Note: Versions mentioned in the description apply only to the upstream shadow package and not the shadow package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

In Shadow 4.13, it is possible to inject control characters into fields provided to the SUID program chfn (change finger). Although it is not possible to exploit this directly (e.g., adding a new user fails because \n is in the block list), it is possible to misrepresent the /etc/passwd file when viewed. Use of \r manipulations and Unicode characters to work around blocking of the : character make it possible to give the impression that a new user has been added. In other words, an adversary may be able to convince a system administrator to take the system offline (an indirect, social-engineered denial of service) by demonstrating that "cat /etc/passwd" shows a rogue user account.

Remediation

There is no fixed version for Ubuntu:18.04 shadow.

References

• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2023-29383
• https://github.com/shadow-maint/shadow/commit/e5905c4b84d4fb90aefcd96ee618411ebfac663d
• https://github.com/shadow-maint/shadow/pull/687
• https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/cve-2023-29383-abusing-linux-chfn-to-misrepresent-etc-passwd/
• https://www.trustwave.com/en-us/resources/security-resources/security-advisories/?fid=31797