CSRF in MediaWiki
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 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.
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (53.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- MediaWiki — versions 1.24.0, 1.24.1, 1.24.2
Weakness classification (CWE)
References
- lists.wikimedia.org/pipermail/mediawiki-announce/2015-December/000186.html (Vendor Advisory, mailing-list, Patch, Release Notes)
- www.openwall.com/lists/oss-security/2015/12/23/7 (mailing-list, Patch, Mailing List, Third Party Advisory)
- phabricator.wikimedia.org/T119309 (Patch, Third Party Advisory)
- www.openwall.com/lists/oss-security/2015/12/21/8 (mailing-list, Patch, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2015-8624?
- CVE-2015-8624 is a high-severity vulnerability in MediaWiki, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2017-03-23.
- How severe is CVE-2015-8624?
- High severity. CVSS v3 base score is 8.8 out of 10.