MGASA-2021-0245 - Updated python-pygments packages fix a security vulnerability

Publication date: 13 Jun 2021
URL: https://advisories.mageia.org/MGASA-2021-0245.html
Type: security
Affected Mageia releases: 7
CVE: CVE-2021-27291

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

Mageia 2021-0245: python-pygments security update

In pygments 1.1+, fixed in 2.7.4, the lexers used to parse programming languages rely heavily on regular expressions

Summary

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

Resolution

MGASA-2021-0245 - Updated python-pygments packages fix a security vulnerability

SRPMS

- 7/core/python-pygments-2.3.1-1.2.mga7

Severity
Publication date: 13 Jun 2021
URL: https://advisories.mageia.org/MGASA-2021-0245.html
Type: security
CVE: CVE-2021-27291

Related News

23.Tablet Connections Esm H320
2 - 3 min read
The release of Ubuntu 24.04 LTS , also known as Noble Numbat, brings various security enhancements and exciting new features . These improvements
4.Lock AbstractDigital Esm H320
2 - 3 min read
Tails 6.2 is a new Linux distribution release that expands its multilingual support and improves security features. The distribution is a
19.Laptop Bed Esm H320
2 - 3 min read
AlmaLinux 9.4 beta has been released and provides compelling reasons to consider it for desktop usage. While AlmaLinux is primarily known as a
32.Lock Code Circular Esm H320
2 - 3 min read
Linux admins and security practitioners face significant challenges in keeping their Linux systems secure amidst the constant threat of kernel bugs.
1.Penguin Landscape Esm H320
2 - 3 min read
A significant security threat, known as the Spectre v2 exploit, has been observed targeting Linux systems running on modern Intel processors. Let's
10.FingerPrint Locks Esm H320
2 - 3 min read
The recent release of I2P 2.5.0 , an anonymous P2P network that protects against online censorship, surveillance, and monitoring, has brought a slew
24.Key Code Esm H320
2 - 3 min read
The Akira ransomware group has extorted approximately $42 million from over 250 victims since January 1, 2024. The group initially focused on
5.ShakingHands Esm H320
2 - 3 min read
At The Linux Foundation's Open Source Summit North America , Linus Torvalds, the creator of Linux, discussed various topics related to Linux
Sign Up

Get the Latest News & Insights

Sign up to get the latest security news affecting Linux and open source delivered straight to your inbox.

© 2024 Guardian Digital, Inc All Rights Reserved