CVE-2015-8623

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.
CSRF
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
8.8 HIGH
NETWORK
LOW
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 32%
VendorProductVersion
mediawikimediawiki
𝑥
≤ 1.23.11
mediawikimediawiki
1.24.0
mediawikimediawiki
1.24.1
mediawikimediawiki
1.24.2
mediawikimediawiki
1.24.3
mediawikimediawiki
1.24.4
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
mediawiki
bullseye
1:1.35.13-1+deb11u2
fixed
wheezy
no-dsa
bullseye (security)
1:1.35.13-1+deb11u3
fixed
bookworm
1:1.39.7-1~deb12u1
fixed
bookworm (security)
1:1.39.10-1~deb12u1
fixed
sid
1:1.39.10-1
fixed
trixie
1:1.39.10-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
mediawiki
disco
not-affected
cosmic
not-affected
bionic
not-affected
artful
ignored
zesty
ignored
yakkety
ignored
xenial
dne
wily
ignored
vivid
ignored
trusty
dne
precise
ignored
Common Weakness Enumeration
References
http://www.openwall.com/lists/oss-security/2015/12/21/8
http://www.openwall.com/lists/oss-security/2015/12/23/7
https://gerrit.wikimedia.org/r/#/c/156336/5/includes/User.php
https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-December/000186.html
https://phabricator.wikimedia.org/T119309
http://www.openwall.com/lists/oss-security/2015/12/21/8
http://www.openwall.com/lists/oss-security/2015/12/23/7
https://gerrit.wikimedia.org/r/#/c/156336/5/includes/User.php
https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-December/000186.html
https://phabricator.wikimedia.org/T119309