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Loop with Unreachable Exit Condition ('Infinite Loop') Affecting mediawiki package, versions <1:1.27.7-1~deb9u8

0.0
high

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 0.28% (69th 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-DEBIAN9-MEDIAWIKI-1244633
  • published 6 Mar 2021
  • disclosed 23 Mar 2021
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Introduced: 6 Mar 2021

CVE-2021-20270 Open this link in a new tab
CWE-835 Open this link in a new tab

How to fix?

Upgrade Debian:9 mediawiki to version 1:1.27.7-1~deb9u8 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:9 relevant fixed versions and status.

An infinite loop in SMLLexer in Pygments versions 1.5 to 2.7.3 may lead to denial of service when performing syntax highlighting of a Standard ML (SML) source file, as demonstrated by input that only contains the "exception" keyword.