VulnerabilityModified

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…

HIGH 8.8EPSS 0.73%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.73%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

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: 0.73% probability · 52th 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://gerrit.wikimedia.org/r/#/c/156336/5/includes/User.phpIssue Tracking, 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://gerrit.wikimedia.org/r/#/c/156336/5/includes/User.phpIssue Tracking, 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.