CVE-2015-8623

NameCVE-2015-8623
DescriptionThe 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
mediawiki (PTS)stretch1:1.27.7-1~deb9u3fixed
stretch (security)1:1.27.7-1~deb9u5fixed
buster1:1.31.7-1~deb10u1fixed
buster (security)1:1.31.10-1~deb10u1fixed
bullseye, sid1:1.35.0-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
mediawikisourcesqueeze(unfixed)end-of-life
mediawikisource(unstable)1:1.25.5-1low

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

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