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)

EPSS: 0.007 (51.1th percentile) — read the EPSS interpretation.

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.

Affected products

  • Mediawiki — versions 1.24.0, 1.24.1, 1.24.2
  • N/a — versions n/a

Weakness classification (CWE)

References

  • cve@mitre.org (Vendor Advisory, mailing-list, x_refsource_MLIST, Patch, Release Notes)
  • cve@mitre.org (mailing-list, x_refsource_MLIST, Patch, Mailing List, Third Party Advisory)
  • cve@mitre.org (x_refsource_CONFIRM, Patch, Third Party Advisory)
  • cve@mitre.org (mailing-list, x_refsource_MLIST, 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.