Debian dla-3172 : libxml2 - security update

high Nessus Plugin ID 166734

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Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3172 advisory.

------------------------------------------------------------------------- Debian LTS Advisory DLA-3172-1 [email protected] https://www.debian.org/lts/security/ Markus Koschany October 30, 2022 https://wiki.debian.org/LTS
-------------------------------------------------------------------------

Package : libxml2 Version : 2.9.4+dfsg1-7+deb10u5 CVE ID : CVE-2022-40303 CVE-2022-40304 Debian Bug : 1022224 1022225

It was discovered that libxml2, the GNOME XML library, was vulnerable to integer overflows and memory corruption.

CVE-2022-40303

Parsing a XML document with the XML_PARSE_HUGE option enabled can result in an integer overflow because safety checks were missing in some functions. Also, the xmlParseEntityValue function did not have any length limitation.

CVE-2022-40304

When a reference cycle is detected in the XML entity cleanup function the XML entity data can be stored in a dictionary. In this case, the dictionary becomes corrupted resulting in logic errors, including memory errors like double free.

For Debian 10 buster, these problems have been fixed in version 2.9.4+dfsg1-7+deb10u5.

We recommend that you upgrade your libxml2 packages.

For the detailed security status of libxml2 please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/libxml2

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 Attachment:
signature.asc Description: This is a digitally signed message part

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

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

Solution

Upgrade the libxml2 packages.

Plugin Details

Severity: High

ID: 166734

File Name: debian_DLA-3172.nasl

Version: 1.8

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 10/31/2022

Updated: 1/22/2025

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

CVSS Score Source: CVE-2022-40304

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:python3-libxml2-dbg, p-cpe:/a:debian:debian_linux:python3-libxml2, p-cpe:/a:debian:debian_linux:libxml2-utils, p-cpe:/a:debian:debian_linux:libxml2-dbg, cpe:/o:debian:debian_linux:10.0, p-cpe:/a:debian:debian_linux:libxml2-dev, p-cpe:/a:debian:debian_linux:libxml2, p-cpe:/a:debian:debian_linux:python-libxml2, p-cpe:/a:debian:debian_linux:libxml2-doc, p-cpe:/a:debian:debian_linux:python-libxml2-dbg

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/30/2022

Vulnerability Publication Date: 10/30/2022

Reference Information

CVE: CVE-2022-40303, CVE-2022-40304

Detections

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