#VU41385 Input validation error in MediaWiki - CVE-2014-5243

Vulnerability identifier: #VU41385

Vulnerability risk: Medium

CVSSv4.0: 2.7 [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:Green]

CVE-ID: CVE-2014-5243

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MediaWiki
Web applications / CMS

Vendor: MediaWiki.org

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

MediaWiki before 1.19.18, 1.20.x through 1.22.x before 1.22.9, and 1.23.x before 1.23.2 does not enforce an IFRAME protection mechanism for transcluded pages, which makes it easier for remote attackers to conduct clickjacking attacks via a crafted web site.

Mitigation
Install update from vendor's website.

Vulnerable software versions

MediaWiki: 1.19 - 1.19.16, 1.20.1 - 1.23.1

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External links
https://advisories.mageia.org/MGASA-2014-0309.html
https://openwall.com/lists/oss-security/2014/08/14/5
https://secunia.com/advisories/59738
https://www.debian.org/security/2014/dsa-3011
https://www.mandriva.com/security/advisories?name=MDVSA-2014:153
https://bugzilla.wikimedia.org/show_bug.cgi?id=65778
https://lists.wikimedia.org/pipermail/mediawiki-announce/2014-July/000157.html

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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.