Debian DSA-5142-1 : libxml2 - security update

medium Nessus Plugin ID 161434

Synopsis

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

Description

The remote Debian 10 / 11 host has packages installed that are affected by a vulnerability as referenced in the dsa-5142 advisory.

- In libxml2 before 2.9.14, several buffer handling functions in buf.c (xmlBuf*) and tree.c (xmlBuffer*) don't check for integer overflows. This can result in out-of-bounds memory writes. Exploitation requires a victim to open a crafted, multi-gigabyte XML file. Other software using libxml2's buffer functions, for example libxslt through 1.1.35, is affected as well. (CVE-2022-29824)

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 libxml2 packages.

For the stable distribution (bullseye), this problem has been fixed in version 2.9.10+dfsg-6.7+deb11u2.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1010526

https://security-tracker.debian.org/tracker/source-package/libxml2

https://www.debian.org/security/2022/dsa-5142

https://security-tracker.debian.org/tracker/CVE-2022-29824

https://packages.debian.org/source/buster/libxml2

https://packages.debian.org/source/bullseye/libxml2

Plugin Details

Severity: Medium

ID: 161434

File Name: debian_DSA-5142.nasl

Version: 1.3

Type: local

Agent: unix

Published: 5/23/2022

Updated: 6/3/2022

Supported Sensors: Frictionless Assessment Agent, Nessus Agent

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.4

Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

Temporal Vector: E:POC/RL:OF/RC:C

CVSS Score Source: CVE-2022-29824

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libxml2, p-cpe:/a:debian:debian_linux:libxml2-dbg, p-cpe:/a:debian:debian_linux:libxml2-dev, p-cpe:/a:debian:debian_linux:libxml2-doc, p-cpe:/a:debian:debian_linux:libxml2-utils, p-cpe:/a:debian:debian_linux:python-libxml2, p-cpe:/a:debian:debian_linux:python-libxml2-dbg, p-cpe:/a:debian:debian_linux:python3-libxml2, p-cpe:/a:debian:debian_linux:python3-libxml2-dbg, cpe:/o:debian:debian_linux:10.0, cpe:/o:debian:debian_linux:11.0

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: 5/22/2022

Vulnerability Publication Date: 5/3/2022

Reference Information

CVE: CVE-2022-29824