Debian dla-4064 : libxml2 - security update

high Nessus Plugin ID 216663

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Synopsis

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

Description

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4064 advisory.

------------------------------------------------------------------------- Debian LTS Advisory DLA-4064-1 [email protected] https://www.debian.org/lts/security/ Tobias Frost February 22, 2025 https://wiki.debian.org/LTS
-------------------------------------------------------------------------

Package : libxml2 Version : 2.9.10+dfsg-6.7+deb11u6 CVE ID : CVE-2022-49043 CVE-2023-39615 CVE-2023-45322 CVE-2024-25062 CVE-2024-56171 CVE-2025-24928 CVE-2025-27113 Debian Bug : 1051230 1053629 1063234 1094238 1098320 1098321 1098322

Multiple vulnerabilities have been found in libxml2, a library providing support to read, modify and write XML and HTML files. These vulnerabilities could potentially lead to denial of servie or other unintended behaviors.

CVE-2022-49043

xmlXIncludeAddNode in xinclude.c in libxml2 before 2.11.0 has a use-after-free.

CVE-2023-39615

libxml2 v2.11.0 was discovered to contain an out-of-bounds read via the xmlSAX2StartElement() function at /libxml2/SAX2.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via supplying a crafted XML file. NOTE: the vendor's position is that the product does not support the legacy SAX1 interface with custom callbacks; there is a crash even without crafted input.

CVE-2023-45322

libxml2 through 2.11.5 has a use-after-free that can only occur after a certain memory allocation fails. This occurs in xmlUnlinkNode in tree.c. NOTE: the vendor's position is I don't think these issues are critical enough to warrant a CVE ID ...
because an attacker typically can't control when memory allocations fail.

CVE-2024-25062

An issue was discovered in libxml2 before 2.11.7 and 2.12.x before 2.12.5. When using the XML Reader interface with DTD validation and XInclude expansion enabled, processing crafted XML documents can lead to an xmlValidatePopElement use-after-free.

CVE-2024-56171

libxml2 before 2.12.10 and 2.13.x before 2.13.6 has a use-after-free in xmlSchemaIDCFillNodeTables and xmlSchemaBubbleIDCNodeTables in xmlschemas.c. To exploit this, a crafted XML document must be validated against an XML schema with certain identity constraints, or a crafted XML schema must be used.

CVE-2025-24928

libxml2 before 2.12.10 and 2.13.x before 2.13.6 has a stack-based buffer overflow in xmlSnprintfElements in valid.c. To exploit this, DTD validation must occur for an untrusted document or untrusted DTD. NOTE: this is similar to CVE-2017-9047.

CVE-2025-27113

libxml2 before 2.12.10 and 2.13.x before 2.13.6 has a NULL pointer dereference in xmlPatMatch in pattern.c.

For Debian 11 bullseye, these problems have been fixed in version 2.9.10+dfsg-6.7+deb11u6.

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: PGP signature

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: 216663

File Name: debian_DLA-4064.nasl

Version: 1.3

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 2/22/2025

Updated: 4/10/2025

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

Risk Information

VPR

Risk Factor: High

Score: 7.3

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2017-9047

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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:P/RL:O/RC:C

CVSS Score Source: CVE-2025-27113

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, 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-dev, p-cpe:/a:debian:debian_linux:libxml2, p-cpe:/a:debian:debian_linux:libxml2-doc

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: 2/22/2025

Vulnerability Publication Date: 5/18/2017

Reference Information

CVE: CVE-2017-9047, CVE-2022-49043, CVE-2023-39615, CVE-2023-45322, CVE-2024-25062, CVE-2024-56171, CVE-2025-24928, CVE-2025-27113

IAVA: 2024-A-0067-S, 2025-A-0123-S

Detections

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