CVE-2015-8624

moderate-risk
Published 2017-03-23

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.

Do I need to act?

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0.12% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (11)

Affected Vendors

Mediawiki

References (8)

Mailing List http://www.openwall.com/lists/oss-security/2015/12/21/8
Mailing List http://www.openwall.com/lists/oss-security/2015/12/23/7
Patch https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-December/000186.ht...
Patch https://phabricator.wikimedia.org/T119309
Mailing List http://www.openwall.com/lists/oss-security/2015/12/21/8
Mailing List http://www.openwall.com/lists/oss-security/2015/12/23/7
Patch https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-December/000186.ht...
Patch https://phabricator.wikimedia.org/T119309
46
/ 100
moderate-risk
Severity 30/34 · Critical
Exploitability 0/34 · Minimal
Exposure 16/34 · Moderate