Vulnerability Monitor

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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.

Published

2017-03-23T20:59:00.483

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 8.8 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

6.4

Weaknesses

Type: Primary
CWE-352

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mediawiki	mediawiki	≤ 1.23.11	Yes
Application	mediawiki	mediawiki	1.24.0	Yes
Application	mediawiki	mediawiki	1.24.1	Yes
Application	mediawiki	mediawiki	1.24.2	Yes
Application	mediawiki	mediawiki	1.24.3	Yes
Application	mediawiki	mediawiki	1.24.4	Yes

References

http://www.openwall.com/lists/oss-security/2015/12/21/8 Mailing List, Patch, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2015/12/23/7 Mailing List, Patch, Third Party Advisory ([email protected])
https://gerrit.wikimedia.org/r/#/c/156336/5/includes/User.php Issue Tracking, Third Party Advisory ([email protected])
https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-December/000186.html Patch, Release Notes, Vendor Advisory ([email protected])
https://phabricator.wikimedia.org/T119309 Patch, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2015/12/21/8 Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2015/12/23/7 Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://gerrit.wikimedia.org/r/#/c/156336/5/includes/User.php Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-December/000186.html Patch, Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://phabricator.wikimedia.org/T119309 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)