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 protection via a timing attack, a different vulnerability than CVE-2015-8624.

CVSS v3.0 8.8 HIGH
CVSS v2.0 6.8 MEDIUM

8.8^/10

CVSS v3.0 : HIGH

V3 Legend

Vector : AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://phabricator.wikimedia.org/T119309	Patch Third Party Advisory
https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-December/000186.html	Patch Release Notes Vendor Advisory
https://gerrit.wikimedia.org/r/#/c/156336/5/includes/User.php	Issue Tracking Third Party Advisory
http://www.openwall.com/lists/oss-security/2015/12/23/7	Mailing List Patch Third Party Advisory
http://www.openwall.com/lists/oss-security/2015/12/21/8	Mailing List Patch Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mediawiki:mediawiki::::::::
	cpe:2.3:a:mediawiki:mediawiki:1.24.0:::::::*
	cpe:2.3:a:mediawiki:mediawiki:1.24.1:::::::*
	cpe:2.3:a:mediawiki:mediawiki:1.24.2:::::::*
	cpe:2.3:a:mediawiki:mediawiki:1.24.4:::::::*
	cpe:2.3:a:mediawiki:mediawiki:1.24.3:::::::*

Information

Published : 2017-03-23 13:59

Updated : 2017-03-27 06:47

NVD link : CVE-2015-8623

Mitre link : CVE-2015-8623

JSON object : View

CWE

CWE-352

Cross-Site Request Forgery (CSRF)

Products Affected

mediawiki

mediawiki

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8.8 /10