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Fencer Vulns
critical 9.1

CVE-2023-41360 json

An issue was discovered in FRRouting FRR through 9.0.

published 2023-08-29 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-45863

cvss
9.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 67%
public exploits
0
none known

Summary

An issue was discovered in FRRouting FRR through 9.0. bgpd/bgp_packet.c can read the initial byte of the ORF header in an ahead-of-stream situation.

Patch / fix

  • frr Debian 12 8.4.4-1.1~deb12u1
  • frr Debian 14, Debian 13 8.4.4-1.1

debian advisories DEBIAN-CVE-2023-41360

  • frr Ubuntu 22.04 LTS 8.1-1ubuntu1.6
  • quagga Ubuntu 20.04 LTS 1.2.4-4ubuntu0.1
  • frr Ubuntu Pro 20.04 LTS 7.2.1-1ubuntu0.2+esm1
  • quagga Ubuntu Pro 16.04 LTS 0.99.24.1-2ubuntu1.4+esm1
  • quagga Ubuntu Pro 18.04 LTS 1.2.4-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2023-41360

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • frr RHEL 9 8.5.3-4.el9
  • frr-selinux RHEL 9 8.5.3-4.el9

red hat advisories RHSA-2024:2156

  • frr SLE Module for Server Applications 15 SP6, SLE Module for Server Applications 15 SP5, openSUSE Leap 15.6 +1 more 8.5.6-150500.4.30.1
  • frr SLE Module for Server Applications 15 SP5, openSUSE Leap 15.5 8.4-150500.4.8.1

suse advisories SUSE-SU-2024:4090-1SUSE-SU-2023:3709-1

  • frr openSUSE Tumbleweed 8.4-5.1

opensuse advisories openSUSE-SU-2024:13191-1

  • frr AlmaLinux 9 8.5.3-4.el9
  • frr-selinux AlmaLinux 9 8.5.3-4.el9

almalinux advisories ALSA-2024:2156

  • frr CBL-Mariner 2.0 8.5.3-2

azure linux advisories AZL-28617

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-41360 updated cvss 4.8

frr: ahead-of-stream read of ORF header

  • Red Hat Enterprise Linux AppStream (v. 9) frr 8.5.3-4.el9, frr-selinux 8.5.3-4.el9
    fixed: vendor fix RHSA-2024:2156
  • Red Hat Enterprise Linux 8 frr, frr-contrib, frr-selinux
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

1.15% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
NVD 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CNA 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.