Medium: python-pygments

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:

python-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 python-pygments to update your system.

New Packages:

noarch:  
    python-pygments-1.4-10.amzn2.0.1.noarch  
  
src:  
    python-pygments-1.4-10.amzn2.0.1.src  

Additional References

Red Hat: CVE-2021-27291

Mitre: CVE-2021-27291