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.

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.

This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2023-38406: Improper Restriction of Operations within the Bounds of a
 Memory Buffer (CWE-119)
CVE-2023-38407: Out-of-bounds Read (CWE-125)
CVE-2023-47234
CVE-2023-47235: Uncontrolled Resource Consumption (CWE-400)