2020-20699 | S-CMS PHP Basic Settings cross site scripting

By Max On Aug 6, 2021

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4.0	$0-$5k	0.06

A vulnerability was found in S-CMS PHP 3.0 (Content Management System). It has been rated as problematic. Affected by this issue is an unknown function of the component Basic Settings. The manipulation of the argument Copyright with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. Impacted is integrity. An attacker might be able to inject arbitrary html and script code into the web site. This would alter the appearance and would make it possible to initiate further attacks against site visitors. CVE summarizes:

A cross site scripting (XSS) vulnerability in S-CMS PHP v3.0 allows attackers to execute arbitrary web scripts or HTML via a crafted payload entered into the Copyright text box under Basic Settings.

The weakness was shared 07/30/2021. The advisory is available at github.com. This vulnerability is handled as CVE-2020-20699 since 08/13/2020. The exploitation is known to be easy. The attack may be launched remotely. The successful exploitation requires a simple authentication. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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