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Debian: CVE-2021-27291: mediawiki, pygments -- security update

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Debian: CVE-2021-27291: mediawiki, pygments -- security update

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
03/17/2021
Created
03/23/2021
Added
03/22/2021
Modified
05/06/2021

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.

Solution(s)

  • debian-upgrade-mediawiki
  • debian-upgrade-pygments

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