2020-23151 | rConfig GET Request ajaxArchiveFiles.php os command injection

By Max On Aug 14, 2021

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7.3	$0-$5k	0.33

A vulnerability has been found in rConfig 3.9.5 and classified as critical. This vulnerability affects some unknown processing in the library lib/ajaxHandlers/ajaxArchiveFiles.php of the file lib/ajaxHandlers/ajaxArchiveFiles.php of the component GET Request Handler. The manipulation of the argument path with an unknown input leads to a privilege escalation vulnerability. The CWE definition for the vulnerability is CWE-78. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

rConfig 3.9.5 allows command injection by sending a crafted GET request to lib/ajaxHandlers/ajaxArchiveFiles.php since the path parameter is passed directly to the exec function without being escaped.

The weakness was disclosed 08/10/2021. The advisory is available at github.com. This vulnerability was named CVE-2020-23151 since 08/13/2020. The exploitation appears to be easy. Access to the local network is required for this attack to succeed. Required for exploitation is a single authentication. Technical details are known, but there is no available exploit.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

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