RHSA-2023:2969 - Security Advisory

Topic

An update for net-snmp is now available for Red Hat Enterprise Linux 8.

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 net-snmp packages provide various libraries and tools for the Simple Network Management Protocol (SNMP), including an SNMP library, an extensible agent, tools for requesting or setting information from SNMP agents, tools for generating and handling SNMP traps, a version of the netstat command which uses SNMP, and a Tk/Perl Management Information Base (MIB) browser.

Security Fix(es):

• net-snmp: NULL Pointer Exception when handling ipDefaultTTL (CVE-2022-44792)
• net-snmp: NULL Pointer Exception when handling pv6IpForwarding (CVE-2022-44793)

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 8.8 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 8 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.8 x86_64
• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.8 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.8 ppc64le
• Red Hat Enterprise Linux Server - TUS 8.8 x86_64
• Red Hat Enterprise Linux for ARM 64 8 aarch64
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.8 aarch64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.8 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.8 x86_64

Fixes

• BZ - 2105957 - snmpd memory increases over time, exhausting all system memory in the end
• BZ - 2134635 - backport two memory leak fixes in snmplib - missed for RHEL 8
• BZ - 2141897 - CVE-2022-44792 net-snmp: NULL Pointer Exception when handling ipDefaultTTL
• BZ - 2141898 - CVE-2022-44793 net-snmp: NULL Pointer Exception when handling pv6IpForwarding
• BZ - 2151537 - Memory leak when IPv6 is disabled through ipv6.disable=1 [RHEL-8]
• BZ - 2160723 - Net-SNMP not responding when proxy requests times out

CVEs

• CVE-2022-44792
• CVE-2022-44793

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.8_release_notes/index