Cross-site scripting in MantisBT

1) Cross-site scripting

EUVDB-ID: #VU6185

Risk: Low

CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2017-6973

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

Vulnerability allows a remote attacker to perform XSS attacks.

The vulnerability is caused by an input validation error in the MantisBT Configuration Report page (adm_config_report.php) when processing "action" HTTP parameter. A remote authenticated attacker can trick the victim to follow a specially 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.

Exploitation example:

http://mantisServerIP/adm_config_report.php?action="><script>alert("XSS")</script>

Mitigation

Install a fixed version 1.3.8, 2.1.2, or 2.2.2 from vendor's website.

Vulnerable software versions

MantisBT: 1.3.0 - 2.2.1

External links

http://openwall.com/lists/oss-security/2017/03/30/4
http://www.mantisbt.org/bugs/view.php?id=22537

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.