Detections
Analytics
Amazon Linux 2 : expat (ALAS-2022-1788)
high Nessus Plugin ID 160254
Language:
Synopsis
The remote Amazon Linux 2 host is missing a security update.Description
The version of expat installed on the remote host is prior to 2.1.0-12. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2022-1788 advisory.In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) places in the storeAtts function in xmlparse.c can lead to realloc misbehavior (e.g., allocating too few bytes, or only freeing memory).
(CVE-2021-45960)
Tenable has extracted the preceding description block directly from the tested product security advisory.
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 expat' to update your system.See Also
Plugin Details
Severity: High
ID: 160254
File Name: al2_ALAS-2022-1788.nasl
Version: 1.4
Type: local
Agent: unix
Published: 4/27/2022
Updated: 12/11/2024
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: High
Base Score: 9
Temporal Score: 7
Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C
CVSS Score Source: CVE-2021-45960
CVSS v3
Risk Factor: High
Base Score: 8.8
Temporal Score: 7.9
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:amazon:linux:expat-static, p-cpe:/a:amazon:linux:expat-debuginfo, p-cpe:/a:amazon:linux:expat-devel, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:expat
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 4/25/2022
Vulnerability Publication Date: 1/1/2022
Reference Information
CVE: CVE-2021-45960
ALAS: 2022-1788