CVE-2015-8623

Name	CVE-2015-8623
Description	The User::matchEditToken function in includes/User.php in MediaWiki before 1.23.12 and 1.24.x before 1.24.5 does not perform token comparison in constant time before returning, which allows remote attackers to guess the edit token and bypass CSRF protection via a timing attack, a different vulnerability than CVE-2015-8624.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
mediawiki (PTS)	bullseye	1:1.35.13-1+deb11u2	fixed
	bullseye (security)	1:1.35.13-1+deb11u3	fixed
	bookworm, bookworm (security)	1:1.39.10-1~deb12u1	fixed
	sid, trixie	1:1.39.10-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
mediawiki	source	squeeze	(unfixed)	end-of-life
mediawiki	source	(unstable)	1:1.25.5-1	low

Notes

[wheezy] - mediawiki <no-dsa> (Minor issue)
[squeeze] - mediawiki <end-of-life> (Not supported in Squeeze LTS)
https://gerrit.wikimedia.org/r/#/c/156336/5/includes/User.php