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Debian dla-3405 : libxml2 - security update

medium Nessus Plugin ID 174964

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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-3405 advisory.

 - ------------------------------------------------------------------------- Debian LTS Advisory DLA-3405-1 [email protected] https://www.debian.org/lts/security/ Thorsten Alteholz April 30, 2023 https://wiki.debian.org/LTS
 - -------------------------------------------------------------------------

 Package : libxml2 Version : 2.9.4+dfsg1-7+deb10u6 CVE ID : CVE-2023-28484 CVE-2023-29469


 Several vulnerabilities were discovered in libxml2, a library providing support to read, modify and write XML and HTML files.

 CVE-2023-28484

 A NULL pointer dereference flaw when parsing invalid XML schemas may result in denial of service.

 CVE-2023-29469

 It was reported that when hashing empty strings which aren't null-terminated, xmlDictComputeFastKey could produce inconsistent results, which may lead to various logic or memory errors.


 For Debian 10 buster, these problems have been fixed in version 2.9.4+dfsg1-7+deb10u6.

 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

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.

See Also

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

https://security-tracker.debian.org/tracker/CVE-2023-28484

https://security-tracker.debian.org/tracker/CVE-2023-29469

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

Plugin Details

Severity: Medium

ID: 174964

File Name: debian_DLA-3405.nasl

Version: 1.3

Type: local

Agent: unix

Published: 5/1/2023

Updated: 1/22/2025

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2023-29469

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: 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: 4/30/2023

Vulnerability Publication Date: 4/13/2023

Reference Information

CVE: CVE-2023-28484, CVE-2023-29469