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Medium ALSA-2023:6434 4 CVEs

Moderate: frr security and bug fix update

Published Nov 7, 2023 · Updated Oct 29, 2026

Ecosystem: AlmaLinux

Summary

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):

* frr: Reachable assertion in peek_for_as4_capability function (CVE-2022-36440)
* frr: denial of service by crafting a BGP OPEN message with an option of type 0xff (CVE-2022-40302)
* frr: denial of service by crafting a BGP OPEN message with an option of type in bgp_open_option_parse in the bgp_open.c 0xff (CVE-2022-40318)
* frr: out-of-bounds read exists in the BGP daemon of FRRouting (CVE-2022-43681)

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 AlmaLinux Release Notes linked from the References section.

Fixed packages 2

ReleasePackageFixed in
AlmaLinux · 9 frr 8.3.1-11.el9_3.alma.1
AlmaLinux · 9 frr-selinux 8.3.1-11.el9_3.alma.1

Vulnerabilities 4

  • Medium 6.5
    CVE-2022-40302

    An issue was discovered in bgpd in FRRouting (FRR) through 8.4. By crafting a BGP OPEN message with an option of type 0…

    frr Debian
  • Unscored —
    CVE-2022-36440

    A reachable assertion was found in Frrouting frr-bgpd 8.3.0 in the peek_for_as4_capability function. Attackers can mali…

    frr Debian
  • Unscored —
    CVE-2022-40318

    An issue was discovered in bgpd in FRRouting (FRR) through 8.4. By crafting a BGP OPEN message with an option of type 0…

    frr Debian
  • Unscored —
    CVE-2022-43681

    An out-of-bounds read exists in the BGP daemon of FRRouting FRR through 8.4. When sending a malformed BGP OPEN message …

    frr Debian

References

  • report
    https://access.redhat.com/security/cve/CVE-2022-36440
  • report
    https://access.redhat.com/security/cve/CVE-2022-40302
  • report
    https://access.redhat.com/security/cve/CVE-2022-40318
  • report
    https://access.redhat.com/security/cve/CVE-2022-43681
  • report
    https://bugzilla.redhat.com/2184468
  • report
    https://bugzilla.redhat.com/2196088
  • report
    https://bugzilla.redhat.com/2196090
  • report
    https://bugzilla.redhat.com/2196091
  • advisory
    https://errata.almalinux.org/9/ALSA-2023-6434.html