CVE-2021-41800
First published: Mon Oct 11 2021(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/mediawiki | 1:1.31.16-1+deb10u2 1:1.31.16-1+deb10u6 1:1.35.11-1~deb11u1 1:1.35.13-1~deb11u1 1:1.39.4-1~deb12u1 1:1.39.5-1~deb12u1 1:1.39.5-1 | |
| composer/mediawiki/core | <1.36.2 | 1.36.2 |
| MediaWiki | <1.36.2 | |
| Fedora | =33 | |
| Fedora | =34 | |
| Fedora | =35 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://lists.wikimedia.org/hyperkitty/list/wikitech-l@lists.wikimedia.org/thread/2IFS5CM2YV4VMSODPX3J2LFHKSEWVFV5/
- https://phabricator.wikimedia.org/T284419
- https://github.com/wikimedia/mediawiki/commit/781caf83dba90c18349f930bbaaa0e89f003f874
- https://security-tracker.debian.org/tracker/CVE-2021-41800
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CJDYJQWT43GBD6GNQ4OW7JOZ6WQ6DZTN/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MDBPECBWN6LWNSWIQMVXK6PP4YFEUYHA/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QNEAI2T3Y65I55ZB6UE6RMC662RZTGRX/
- https://security.gentoo.org/glsa/202305-24
- https://nvd.nist.gov/vuln/detail/CVE-2021-41800
- https://github.com/advisories/GHSA-c8wv-qwwc-6j73 (Advisory)
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CJDYJQWT43GBD6GNQ4OW7JOZ6WQ6DZTN/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MDBPECBWN6LWNSWIQMVXK6PP4YFEUYHA/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QNEAI2T3Y65I55ZB6UE6RMC662RZTGRX/
- https://lists.wikimedia.org/hyperkitty/list/wikitech-l%40lists.wikimedia.org/thread/2IFS5CM2YV4VMSODPX3J2LFHKSEWVFV5/
Frequently Asked Questions
What is the severity of CVE-2021-41800?
CVE-2021-41800 has a moderate severity level as it allows for denial of service due to lengthy query processing.
How do I fix CVE-2021-41800?
To fix CVE-2021-41800, you should upgrade MediaWiki to version 1.36.2 or later.
What are the affected versions for CVE-2021-41800?
CVE-2021-41800 affects MediaWiki versions prior to 1.36.2.
What specific software is impacted by CVE-2021-41800?
CVE-2021-41800 impacts MediaWiki software including specific Debian and Fedora packages.
Is there a workaround for CVE-2021-41800?
There is no official workaround for CVE-2021-41800, and the only solution is to update to the fixed version.
- collector/security-tracker-debian
- agent/type
- collector/github-advisory-latest
- source/GitHub
- alias/GHSA-c8wv-qwwc-6j73
- alias/CVE-2021-41800
- agent/software-canonical-lookup
- agent/severity
- agent/weakness
- agent/remedy
- agent/description
- agent/references
- agent/author
- collector/github-advisory
- collector/mitre-cve
- source/MITRE
- agent/first-publish-date
- agent/last-modified-date
- agent/event
- agent/trending
- agent/source
- agent/tags
- agent/softwarecombine
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup-request
- collector/nvd-cve
- collector/nvd-index
- package-manager/debian
- package-manager/composer
- vendor/mediawiki
- canonical/mediawiki
- vendor/fedoraproject
- canonical/fedora
- version/fedora/33
- version/fedora/34
- version/fedora/35