Vulnerability identifier: #VU24457

Vulnerability risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-20381

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
TestLink
Web applications / CMS

Vendor: testlink.org

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data passed via the "reqURI" parameter in index.php. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in 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.

This vulnerability exists due to an incomplete fix for CVE-2019-19491.

Mitigation
Install update from vendor's website.

Vulnerable software versions

TestLink: 1.9.3 - 1.9.19

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External links
http://mantis.testlink.org/view.php?id=8808
http://github.com/TestLinkOpenSourceTRMS/testlink-code/commit/cde692895e425731e6951d265a01ca6425a7c26e
http://github.com/TestLinkOpenSourceTRMS/testlink-code/compare/1.9.19...1.9.20

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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.