Amazon Linux AMI : libxslt (ALAS-2025-1968)

high Nessus Plugin ID 234704

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Synopsis

The remote Amazon Linux AMI host is missing a security update.

Description

The version of libxslt installed on the remote host is prior to 1.1.28-6.16. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2025-1968 advisory.

xsltGetInheritedNsList in libxslt before 1.1.43 has a use-after-free issue related to exclusion of result prefixes. (CVE-2024-55549)

numbers.c in libxslt before 1.1.43 has a use-after-free because, in nested XPath evaluations, an XPath context node can be modified but never restored. This is related to xsltNumberFormatGetValue, xsltEvalXPathPredicate, xsltEvalXPathStringNs, and xsltComputeSortResultInternal. (CVE-2025-24855)

Tenable has extracted the preceding description block directly from the tested product 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

Run 'yum update libxslt' to update your system.

Plugin Details

Severity: High

ID: 234704

File Name: ala_ALAS-2025-1968.nasl

Version: 1.1

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 4/22/2025

Updated: 4/22/2025

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

Risk Information

VPR

Risk Factor: High

Score: 7.1

CVSS v2

Risk Factor: Medium

Base Score: 5.6

Temporal Score: 4.1

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

CVSS Score Source: CVE-2025-24855

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:libxslt-python26, p-cpe:/a:amazon:linux:libxslt-python27, p-cpe:/a:amazon:linux:libxslt-debuginfo, cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:libxslt-devel, p-cpe:/a:amazon:linux:libxslt

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 4/9/2025

Vulnerability Publication Date: 3/14/2025

Reference Information

CVE: CVE-2024-55549, CVE-2025-24855

IAVA: 2025-A-0187

Detections

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