Description
MediaWiki before 1.19.24, 1.2x before 1.23.9, and 1.24.x before 1.24.2, when using HHVM or Zend PHP, allows remote attackers to cause a denial of service ("quadratic blowup" and memory consumption) via an XML file containing an entity declaration with long replacement text and many references to this entity, a different vulnerability than CVE-2015-2942.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | mediawiki | 1:1.19.20+dfsg-2.3 | — |
| Debian 13 | mediawiki | 1:1.19.20+dfsg-2.3 | — |
| Debian 12 | mediawiki | 1:1.19.20+dfsg-2.3 | — |
References
- GLSA-201510-05 vendor-advisory
- MDVSA-2015:200 vendor-advisory
- 73477 vdb-entry
- [oss-security] 20150407 Re: CVE request: MediaWiki 1.24.2/1.23.9/1.19.24 mailing-list
- [oss-security] 20150331 CVE request: MediaWiki 1.24.2/1.23.9/1.19.24 mailing-list
- [MediaWiki-announce] 20150331 MediaWiki Security and Maintenance Releases: 1.19.24, 1.23.9, and 1.24.2 mailing-list
- https://phabricator.wikimedia.org/T71210