RHSA-2024:1113 - Security Advisory

Topic

An update for frr is now available for Red Hat Enterprise Linux 8.6 Extended Update Support.

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

FRRouting is free software that manages TCP/IP based routing protocols. It supports BGP4, OSPFv2, OSPFv3, ISIS, RIP, RIPng, PIM, NHRP, PBR, EIGRP and BFD.

Security Fix(es):

• ffr: Flowspec overflow in bgpd/bgp_flowspec.c (CVE-2023-38406)
• ffr: Out of bounds read in bgpd/bgp_label.c (CVE-2023-38407)
• frr: crash from specially crafted MP_UNREACH_NLRI-containing BGP UPDATE message (CVE-2023-47234)
• frr: crash from malformed EOR-containing BGP UPDATE message (CVE-2023-47235)

Bug Fix(es):

• Zebra not fetching host routes (RHEL-24695)

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 8.6 x86_64
• Red Hat Enterprise Linux Server - AUS 8.6 x86_64
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.6 s390x
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.6 ppc64le
• Red Hat Enterprise Linux Server - TUS 8.6 x86_64
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.6 aarch64
• 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 - 2248207 - CVE-2023-47235 frr: crash from malformed EOR-containing BGP UPDATE message
• BZ - 2248208 - CVE-2023-47234 frr: crash from specially crafted MP_UNREACH_NLRI-containing BGP UPDATE message
• BZ - 2248526 - CVE-2023-38406 ffr: Flowspec overflow in bgpd/bgp_flowspec.c
• BZ - 2248528 - CVE-2023-38407 ffr: Out of bounds read in bgpd/bgp_label.c

CVEs

• CVE-2023-38406
• CVE-2023-38407
• CVE-2023-47234
• CVE-2023-47235

References

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