RHSA-2024:5418 - Security Advisory

Topic

An update for bind9.16 is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, and Red Hat Enterprise Linux 8.6 Telecommunications Update Service.

Red Hat Product Security has rated this update as having a security impact of Important. 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 Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols. BIND includes a DNS server (named); a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating correctly.

Security Fix(es):

• bind: bind9: BIND's database will be slow if a very large number of RRs exist at the same nam (CVE-2024-1737)
• bind9: bind: SIG(0) can be used to exhaust CPU resources (CVE-2024-1975)
• bind: bind9: Assertion failure when serving both stale cache data and authoritative zone content (CVE-2024-4076)

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.

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 - Extended Update Support Extension 8.6 x86_64
• Red Hat Enterprise Linux Server - AUS 8.6 x86_64
• Red Hat Enterprise Linux Server - TUS 8.6 x86_64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.6 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.6 x86_64

Fixes

• BZ - 2298893 - CVE-2024-1737 bind: bind9: BIND's database will be slow if a very large number of RRs exist at the same nam
• BZ - 2298901 - CVE-2024-1975 bind9: bind: SIG(0) can be used to exhaust CPU resources
• BZ - 2298904 - CVE-2024-4076 bind: bind9: Assertion failure when serving both stale cache data and authoritative zone content

CVEs

• CVE-2024-1737
• CVE-2024-1975
• CVE-2024-4076

References

• https://access.redhat.com/security/updates/classification/#important