RHSA-2023:6635 - Security Advisory

Topic

An update for c-ares is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The c-ares C library defines asynchronous DNS (Domain Name System) requests and provides name resolving API.

The following packages have been upgraded to a later upstream version: c-ares (1.19.1). (BZ#2210370)

Security Fix(es):

• c-ares: buffer overflow in config_sortlist() due to missing string length check (CVE-2022-4904)
• c-ares: Buffer Underwrite in ares_inet_net_pton() (CVE-2023-31130)
• c-ares: Insufficient randomness in generation of DNS query IDs (CVE-2023-31147)
• c-ares: AutoTools does not set CARES_RANDOM_FILE during cross compilation (CVE-2023-31124)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 9.3 Release Notes linked from the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 9 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.4 x86_64
• Red Hat Enterprise Linux Server - AUS 9.4 x86_64
• Red Hat Enterprise Linux for IBM z Systems 9 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.4 s390x
• Red Hat Enterprise Linux for Power, little endian 9 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.4 ppc64le
• Red Hat Enterprise Linux for ARM 64 9 aarch64
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.4 aarch64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.4 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.4 x86_64
• Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.4 aarch64
• Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.4 s390x

Fixes

• BZ - 2168631 - CVE-2022-4904 c-ares: buffer overflow in config_sortlist() due to missing string length check
• BZ - 2209494 - CVE-2023-31124 c-ares: AutoTools does not set CARES_RANDOM_FILE during cross compilation
• BZ - 2209497 - CVE-2023-31130 c-ares: Buffer Underwrite in ares_inet_net_pton()
• BZ - 2209501 - CVE-2023-31147 c-ares: Insufficient randomness in generation of DNS query IDs
• BZ - 2210370 - Rebase c-ares for RHEL 9.3

CVEs

• CVE-2022-4904
• CVE-2023-31124
• CVE-2023-31130
• CVE-2023-31147

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html/9.3_release_notes/index