CVE-2015-8624
The User::matchEditToken function in includes/User.php in MediaWiki before 1.23.12, 1.24.x before 1.24.5, 1.25.x before 1.25.4, and 1.26.x before 1.26.1 does not perform token comparison in constant time before determining if a debugging message should…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.75%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The User::matchEditToken function in includes/User.php in MediaWiki before 1.23.12, 1.24.x before 1.24.5, 1.25.x before 1.25.4, and 1.26.x before 1.26.1 does not perform token comparison in constant time before determining if a debugging message should be logged, which allows remote attackers to guess the edit token and bypass CSRF protection via a timing attack, a different vulnerability than CVE-2015-8623.
- CVSS 3.0
- 8.8 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.75% probability · 53th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-352
- Affected
- mediawiki/mediawiki
- Source
- cve@mitre.org
References
- http://www.openwall.com/lists/oss-security/2015/12/21/8Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2015/12/23/7Mailing List, Patch, Third Party Advisory
- https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-December/000186.htmlPatch, Release Notes, Vendor Advisory
- https://phabricator.wikimedia.org/T119309Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2015/12/21/8Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2015/12/23/7Mailing List, Patch, Third Party Advisory
- https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-December/000186.htmlPatch, Release Notes, Vendor Advisory
- https://phabricator.wikimedia.org/T119309Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.