Debian dla-4029 : frr - security update

high Nessus Plugin ID 214524

Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 11 host has packages installed that are affected by a vulnerability as referenced in the dla-4029 advisory.

[email protected] Subject: [SECURITY] [DLA 4029-1] frr security update

- ------------------------------------------------------------------------- Debian LTS Advisory DLA-4029-1 [email protected] https://www.debian.org/lts/security/ Arturo Borrero Gonzalez January 23, 2025 https://wiki.debian.org/LTS
- -------------------------------------------------------------------------

Package : frr Version : 7.5.1-1.1+deb11u4 CVE ID : CVE-2024-55553

In FRR, the internet routing protocol suite software, all routes are re-validated if the total size of an update received via RTR exceeds the internal socket's buffer size, default 4K on most OSes.

An attacker can use this to trigger re-parsing of the RIB for FRR routers using RTR by causing more than this number of updates during an update interval (usually 30 minutes). Additionally, this effect regularly occurs organically. Furthermore, an attacker can use this to trigger route validation continuously. Given that routers with large full tables may need more than 30 minutes to fully re-validate the table, continuous issuance/withdrawal of large numbers of ROA may be used to impact the route handling performance of all FRR instances using RPKI globally. Additionally, the re-validation will cause heightened BMP traffic to ingestors.

For Debian 11 bullseye, this problem has been fixed in version 7.5.1-1.1+deb11u4.

We recommend that you upgrade your frr packages.

For the detailed security status of frr please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/frr

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade the frr packages.

Plugin Details

Severity: High

ID: 214524

File Name: debian_DLA-4029.nasl

Version: 1.1

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 1/23/2025

Updated: 1/23/2025

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2024-55553

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, p-cpe:/a:debian:debian_linux:frr, p-cpe:/a:debian:debian_linux:frr-doc, p-cpe:/a:debian:debian_linux:frr-pythontools, p-cpe:/a:debian:debian_linux:frr-rpki-rtrlib, p-cpe:/a:debian:debian_linux:frr-snmp

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 1/23/2025

Vulnerability Publication Date: 1/6/2025

Reference Information

CVE: CVE-2024-55553

Detections

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