Unrated
An issue was discovered in MediaWiki through 1.38.1. The lemma length of a Wikibase lexeme is currently capped at a thousand characters. Unfortunately...
CVE-2022-34750
First seen on SecPulse
Original description The description as published by the source.
An issue was discovered in MediaWiki through 1.38.1. The lemma length of a Wikibase lexeme is currently capped at a thousand characters. Unfortunately, this length is not validated, allowing much larger lexemes to be created, which introduces various denial-of-service attack vectors within the Wikibase and WikibaseLexeme extensions. This is related to Special:NewLexeme and Special:NewProperty.
References
- advisory github.com
- advisory nvd.nist.gov
- web gerrit.wikimedia.org
- web gerrit.wikimedia.org
- web phabricator.wikimedia.org