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Amazon Linux AMI : libxml2 (ALAS-2023-1874)

medium Nessus Plugin ID 184392

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Synopsis

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

Description

The version of libxml2 installed on the remote host is prior to 2.9.1-6.6.44. It is, therefore, affected by a vulnerability as referenced in the ALAS-2023-1874 advisory.

 - ** DISPUTED ** 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-2023-45322)

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

Solution

Run 'yum update libxml2' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2023-1874.html

https://alas.aws.amazon.com/cve/html/CVE-2023-45322.html

https://alas.aws.amazon.com/faqs.html

Plugin Details

Severity: Medium

ID: 184392

File Name: ala_ALAS-2023-1874.nasl

Version: 1.0

Type: local

Agent: unix

Published: 11/3/2023

Updated: 11/3/2023

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2023-45322

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:libxml2-devel, p-cpe:/a:amazon:linux:libxml2-debuginfo, p-cpe:/a:amazon:linux:libxml2-python27, p-cpe:/a:amazon:linux:libxml2, cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:libxml2-python26, p-cpe:/a:amazon:linux:libxml2-static

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/30/2023

Vulnerability Publication Date: 10/6/2023

Reference Information

CVE: CVE-2023-45322