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Fencer Vulns
medium 6.5

CVE-2024-31948 json

In FRRouting (FRR) through 9.1, an attacker using a malformed Prefix SID attribute in a BGP UPDATE packet can cause the bgpd daemon to cras…

published 2024-04-07 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-29806

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 57%
public exploits
0
none known

Summary

In FRRouting (FRR) through 9.1, an attacker using a malformed Prefix SID attribute in a BGP UPDATE packet can cause the bgpd daemon to crash.

Patch / fix

  • frr Debian 14, Debian 13 10.0.1-0.1

debian advisories DEBIAN-CVE-2024-31948

  • frr Ubuntu 22.04 LTS 8.1-1ubuntu1.10
  • frr Ubuntu 24.04 LTS 8.4.4-1.1ubuntu6.1
  • frr Ubuntu Pro 20.04 LTS 7.2.1-1ubuntu0.2+esm2

ubuntu advisories UBUNTU-CVE-2024-31948

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 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 SLES for SAP 15 SP4, SLES for SAP 15 SP3, SLES 15 SP4-LTSS +7 more 7.4-150300.4.23.1
  • frr SLE Module for Server Applications 15 SP5, openSUSE Leap 15.5 8.4-150500.4.20.1

suse advisories SUSE-SU-2024:4090-1SUSE-SU-2024:1475-1SUSE-SU-2024:1453-1

  • frr openSUSE Tumbleweed 8.4-10.1

opensuse advisories openSUSE-SU-2024:13860-1

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-2024-31948 updated cvss 6.5

frr: bgpd daemon crash

  • Red Hat Enterprise Linux 8 frr, frr-contrib, frr-selinux Red Hat Enterprise Linux 9 frr, frr-selinux
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Enterprise Linux 10 frr
    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
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.83% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • frrouting frrouting

Classification

Weakness
  • CWE-1287 Improper Validation of Specified Type of Input

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.