Loop with Unreachable Exit Condition ('Infinite Loop') Affecting mediawiki package, versions <1:1.35.2-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.32% (71st percentile)

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  • Snyk IDSNYK-DEBIAN12-MEDIAWIKI-1553958
  • published6 Mar 2021
  • disclosed23 Mar 2021

Introduced: 6 Mar 2021

CVE-2021-20270  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

Upgrade Debian:12 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:12 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.

CVSS Scores

version 3.1