| Name | CVE-2021-41800 |
| Description | MediaWiki before 1.36.2 allows a denial of service (resource consumption because of lengthy query processing time). Visiting Special:Contributions can sometimes result in a long running SQL query because PoolCounter protection is mishandled. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-4979-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| mediawiki (PTS) | buster | 1:1.31.16-1+deb10u2 | fixed |
| buster (security) | 1:1.31.16-1+deb10u7 | fixed |
| bullseye | 1:1.35.13-1~deb11u1 | fixed |
| bullseye (security) | 1:1.35.13-1+deb11u2 | fixed |
| bookworm | 1:1.39.5-1~deb12u1 | fixed |
| bookworm (security) | 1:1.39.7-1~deb12u1 | fixed |
| sid, trixie | 1:1.39.7-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
[stretch] - mediawiki <not-affected> (The vulnerable code was introduced later)
https://lists.wikimedia.org/hyperkitty/list/wikitech-l@lists.wikimedia.org/thread/2IFS5CM2YV4VMSODPX3J2LFHKSEWVFV5/
https://phabricator.wikimedia.org/T284419
Fixed by https://github.com/wikimedia/mediawiki/commit/781caf83dba90c18349f930bbaaa0e89f003f874