Advisories » MGASA-2021-0245

Updated python-pygments packages fix a security vulnerability

Publication date: 13 Jun 2021
Modification date: 13 Jun 2021
Type: security
Affected Mageia releases : 7
CVE: CVE-2021-27291

Description

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).
                

References

• https://bugs.mageia.org/show_bug.cgi?id=28982
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/GSJRFHALQ7E3UV4FFMFU2YQ6LUDHAI55/
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27291

SRPMS

7/core

• python-pygments-2.3.1-1.2.mga7