Amazon Linux 2 Security Advisory: ALAS-2023-2117
Advisory Release Date: 2023-07-05 22:01 Pacific
Advisory Updated Date: 2023-07-19 22:27 Pacific
Severity:
Medium
Issue Overview:
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)
Affected Packages:
python3-pygments
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update python3-pygments to update your system.
New Packages:
noarch:
python3-pygments-2.2.0-3.amzn2.0.3.noarch
python3-pygments-doc-2.2.0-3.amzn2.0.3.noarch
src:
python3-pygments-2.2.0-3.amzn2.0.3.src