Detections
Analytics
Amazon Linux 2 : python3 (ALAS-2025-2923)
medium Nessus Plugin ID 241738
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Synopsis
The remote Amazon Linux 2 host is missing a security update.Description
The version of python3 installed on the remote host is prior to 3.7.16-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2025-2923 advisory.There is an issue in CPython when using `bytes.decode(unicode_escape, error=ignore|replace)`. If you are not using the unicode_escape encoding or an error handler your usage is not affected. To work-around this issue you may stop using the error= handler and instead wrap the bytes.decode() call in a try-except catching the DecodeError. (CVE-2025-4516)
The html.parser.HTMLParser class had worse-case quadratic complexity when processing certain crafted malformed inputs potentially leading to amplified denial-of-service. (CVE-2025-6069)
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 python3' to update your system.See Also
https://alas.aws.amazon.com//AL2/ALAS2-2025-2923.html
https://alas.aws.amazon.com/cve/html/CVE-2025-4516.html
Plugin Details
Severity: Medium
ID: 241738
File Name: al2_ALAS-2025-2923.nasl
Version: 1.1
Type: local
Agent: unix
Published: 7/10/2025
Updated: 7/10/2025
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.0
CVSS v2
Risk Factor: Medium
Base Score: 5.4
Temporal Score: 4
Vector: CVSS2#AV:N/AC:H/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2025-6069
CVSS v3
Risk Factor: Medium
Base Score: 4.3
Temporal Score: 3.8
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
CVSS v4
Risk Factor: Medium
Base Score: 5.9
Threat Score: 2
Threat Vector: CVSS:4.0/E:U
Vector: CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS Score Source: CVE-2025-4516
Vulnerability Information
CPE: p-cpe:/a:amazon:linux:python3, p-cpe:/a:amazon:linux:python3-test, p-cpe:/a:amazon:linux:python3-devel, p-cpe:/a:amazon:linux:python3-debuginfo, p-cpe:/a:amazon:linux:python3-debug, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:python3-tools, p-cpe:/a:amazon:linux:python3-libs, p-cpe:/a:amazon:linux:python3-tkinter
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 7/10/2025
Vulnerability Publication Date: 5/15/2025
Reference Information
CVE: CVE-2025-4516, CVE-2025-6069
IAVA: 2025-A-0444