Cross-site scripting in MediaWiki - CVE-2015-6729
Published: September 1, 2015 / Updated: April 10, 2021
Vulnerability identifier: #VU40658
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2015-6729
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: MediaWiki.org
Affected software:
MediaWiki
MediaWiki
Detailed vulnerability description
Vulnerability allows a remote attacker to perform XSS attacks.
The vulnerability is caused by an input validation error in thumb.php in MediaWiki before 1.23.10, 1.24.x before 1.24.3, and 1.25.x before 1.25.2 when processing rel404 parameter, which is not properly handled in an error page. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in victim's browser in security context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
How to mitigate CVE-2015-6729
Install update from vendor's website.
Sources
- http://lists.fedoraproject.org/pipermail/package-announce/2015-August/165193.html
- http://www.openwall.com/lists/oss-security/2015/08/12/6
- http://www.openwall.com/lists/oss-security/2015/08/27/6
- http://www.securityfocus.com/bid/76334
- https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-August/000179.html
- https://security.gentoo.org/glsa/201510-05