Detections
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Amazon Linux 2 : python-pygments (ALAS-2023-2198)

high Nessus Plugin ID 179744

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of python-pygments installed on the remote host is prior to 1.4-10. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2023-2198 advisory.

 In pygments 1.1+, fixed in 2.7.4, the lexers used to parse programming languages rely heavily on regular expressions. Some of the regular expressions have exponential or cubic worst-case complexity and are vulnerable to ReDoS. By crafting malicious input, an attacker can cause a denial of service.
 (CVE-2021-27291)

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 python-pygments' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2023-2198.html

https://alas.aws.amazon.com/cve/html/CVE-2021-27291.html

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

Plugin Details

Severity: High

ID: 179744

File Name: al2_ALAS-2023-2198.nasl

Version: 1.2

Type: local

Agent: unix

Published: 8/14/2023

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: 4.4

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-2021-27291

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:python-pygments, cpe:/o:amazon:linux:2

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: 8/3/2023

Vulnerability Publication Date: 3/17/2021

Reference Information

CVE: CVE-2021-27291