#VU41570 Cross-site scripting in MediaWiki - CVE-2014-3966

Vulnerability identifier: #VU41570

Vulnerability risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2014-3966

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MediaWiki
Web applications / CMS

Vendor: MediaWiki.org

Description

Vulnerability allows a remote attacker to perform Cross-site scripting attacks.

An input validation error exists in Special:PasswordReset in MediaWiki before 1.19.16, 1.21.x before 1.21.10, and 1.22.x before 1.22.7, when wgRawHtml is enabled,. A remote authenticated 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.

Mitigation
Install update from vendor's website.

Vulnerable software versions

MediaWiki: 1.19.0 - 1.19.14, 1.21 - 1.22.6

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External links
https://lists.wikimedia.org/pipermail/mediawiki-announce/2014-May/000151.html
https://secunia.com/advisories/58834
https://secunia.com/advisories/58896
https://www.debian.org/security/2014/dsa-2957
https://www.openwall.com/lists/oss-security/2014/06/04/15
https://www.securityfocus.com/bid/67787
https://www.securitytracker.com/id/1030364
https://bugzilla.wikimedia.org/show_bug.cgi?id=65501

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.