#VU44705 Cross-site scripting in MantisBT - CVE-2011-2938

Vulnerability identifier: #VU44705

Vulnerability risk: Low

CVSSv4.0: 5.5 [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:P/U:Clear]

CVE-ID: CVE-2011-2938

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
MantisBT
Web applications / Other software

Vendor: mantisbt.sourceforge.net

Description

Vulnerability allows a remote attacker to perform XSS attacks.

The vulnerability is caused by an input validation error in filter_api.php in MantisBT before 1.2.7 when processing a parameter, as demonstrated by the project_id parameter to search.php. 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.

Mitigation
Install update from vendor's website.

Vulnerable software versions

MantisBT: 0.19.3 - 1.2.5

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External links
https://lists.fedoraproject.org/pipermail/package-announce/2011-September/066061.html
https://packetstormsecurity.org/files/104149
https://secunia.com/advisories/51199
https://security.gentoo.org/glsa/glsa-201211-01.xml
https://securityreason.com/securityalert/8391
https://www.mantisbt.org/bugs/view.php?id=13245
https://www.openwall.com/lists/oss-security/2011/08/18/7
https://www.openwall.com/lists/oss-security/2011/08/19/16
https://www.securityfocus.com/bid/49235
https://bugs.gentoo.org/show_bug.cgi?id=379739
https://bugs.launchpad.net/ubuntu/+source/mantis/+bug/828857
https://bugzilla.redhat.com/show_bug.cgi?id=731777
https://github.com/mantisbt/mantisbt/commit/317f3db3a3c68775de3acf3b15f55b1e3c18f93b

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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. However, proof of concept for this vulnerability is available.