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CVE-2021-27291 Affecting mediawiki package, versions <1:1.35.2-1

0.0
high

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 0.96% (84th percentile)
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NVD
7.5 high
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SUSE
7.5 high
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Red Hat
7.5 high

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  • Snyk ID SNYK-DEBIAN11-MEDIAWIKI-1244637
  • published 18 Mar 2021
  • disclosed 17 Mar 2021
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Introduced: 17 Mar 2021

CVE-2021-27291 Open this link in a new tab

How to fix?

Upgrade Debian:11 mediawiki to version 1:1.35.2-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream mediawiki package and not the mediawiki package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

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