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CVE-2019-12473: Wikimedia Potential DOS due to slow WatchedItemStore::countVisitingWatchersMultiple

May 24, 2022 (updated May 15, 2024)

Wikimedia MediaWiki 1.27.0 through 1.32.1 might allow DoS. Passing invalid titles to the API could cause a DoS by querying the entire watchlist table. Fixed in 1.32.2, 1.31.2, 1.30.2 and 1.27.6.

References

  • github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2019-12473.yaml
  • github.com/advisories/GHSA-33xw-x3pr-rvqj
  • github.com/wikimedia/mediawiki
  • lists.wikimedia.org/pipermail/wikitech-l/2019-June/092152.html
  • nvd.nist.gov/vuln/detail/CVE-2019-12473
  • phabricator.wikimedia.org/T204729
  • seclists.org/bugtraq/2019/Jun/12
  • www.debian.org/security/2019/dsa-4460

Code Behaviors & Features

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Affected versions

All versions starting from 1.27.0 before 1.27.6, all versions starting from 1.30.0 before 1.30.2, all versions starting from 1.31.0 before 1.31.2, all versions starting from 1.32.0 before 1.32.2

Fixed versions

  • 1.27.6
  • 1.30.2
  • 1.31.2
  • 1.32.2

Solution

Upgrade to versions 1.27.6, 1.30.2, 1.31.2, 1.32.2 or above.

Impact 7.5 HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Learn more about CVSS

Weakness

  • CWE-400: Uncontrolled Resource Consumption

Source file

packagist/mediawiki/core/CVE-2019-12473.yml

Spotted a mistake? Edit the file on GitLab.

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