Wednesday, March 17, 2021

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.

References to Advisories, Solutions, and Tools


References to Advisories, Solutions, and Tools

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Resourcehttps://gist.github.com/b-c-ds/b1a2cc0c68a35c57188575eb496de5cehttps://github.com/pygments/pygments/commit/2e7e8c4a7b318f4032493773732754e418279a14
 

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Thanks for everything Templateism - You should have written the code a little more complicated