Vulnerability identifier: #VU25844

Vulnerability risk: Medium

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-8841

CWE-ID: CWE-89

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
TestLink
Web applications / CMS

Vendor: testlink.org

Description

The vulnerability allows a remote attacker to execute arbitrary SQL queries in database.

The vulnerability exists due to insufficient sanitization of user-supplied data passed via the "relation_type" parameter in lib/requirements/reqSearch.php. A remote authenticated attacker can send a specially crafted request to the affected application and execute arbitrary SQL commands within the application database.

Successful exploitation of this vulnerability may allow a remote attacker to read, delete, modify data in database and gain complete control over the affected application.

Mitigation
Install update from vendor's website.

Vulnerable software versions

TestLink: 1.9.3 - 1.9.19

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External links
http://github.com/TestLinkOpenSourceTRMS/testlink-code/pull/239
http://github.com/ver007/testlink-1.9.19-sqlinject

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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