Race condition in MediaWiki - CVE-2014-2243
Published: March 2, 2014 / Updated: August 10, 2020
Vulnerability identifier: #VU41981
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2014-2243
CWE-ID: CWE-362
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: MediaWiki.org
Affected software:
MediaWiki
MediaWiki
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
includes/User.php in MediaWiki before 1.19.12, 1.20.x and 1.21.x before 1.21.6, and 1.22.x before 1.22.3 terminates validation of a user token upon encountering the first incorrect character, which makes it easier for remote attackers to obtain access via a brute-force attack that relies on timing differences in responses to incorrect token guesses.
How to mitigate CVE-2014-2243
Install update from vendor's website.
Sources
- http://lists.wikimedia.org/pipermail/mediawiki-announce/2014-February/000141.html
- http://openwall.com/lists/oss-security/2014/02/28/1
- http://openwall.com/lists/oss-security/2014/03/01/2
- https://bugzilla.redhat.com/show_bug.cgi?id=1071136
- https://bugzilla.wikimedia.org/show_bug.cgi?id=61346
- https://gerrit.wikimedia.org/r/#/q/I2a9e89120f7092015495e638c6fa9f67adc9b84f,n,z