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Ubuntu 23.04 : FRR vulnerability (USN-6240-1)

high Nessus Plugin ID 178749

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 23.04 host has packages installed that are affected by a vulnerability as referenced in the USN-6240-1 advisory.

 - A flaw was found in FRRouting when parsing certain babeld unicast hello messages that are intended to be ignored. This issue may allow an attacker to send specially crafted hello messages with the unicast flag set, the interval field set to 0, or any TLV that contains a sub-TLV with the Mandatory flag set to enter an infinite loop and cause a denial of service. (CVE-2023-3748)

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

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-6240-1

Plugin Details

Severity: High

ID: 178749

File Name: ubuntu_USN-6240-1.nasl

Version: 1.2

Type: local

Agent: unix

Published: 7/24/2023

Updated: 9/5/2023

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2023-3748

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:canonical:ubuntu_linux:23.04, p-cpe:/a:canonical:ubuntu_linux:frr, p-cpe:/a:canonical:ubuntu_linux:frr-pythontools, p-cpe:/a:canonical:ubuntu_linux:frr-rpki-rtrlib, p-cpe:/a:canonical:ubuntu_linux:frr-snmp

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/24/2023

Vulnerability Publication Date: 7/24/2023

Reference Information

CVE: CVE-2023-3748

USN: 6240-1