Vulnerability identifier: #VU22513

Vulnerability risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C]

CVE-ID: CVE-2019-16663

CWE-ID: CWE-78

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
rConfig
Web applications / Remote management & hosting panels

Vendor: rConfig

Description

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to the "catCommand" parameter is passed to the "exec" function without filtering. A remote authenticated attacker can send a specially crafted GET request to "search.crud.php" file and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note: This vulnerability can be exploited without authentication for all versions before rConfig 3.6.0.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

rConfig: 1.0.0 - 3.9.2

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External links
http://drive.google.com/open?id=1kQGmboKfwob4RwlMjnv6ER2Za1GUptOi
http://drive.google.com/open?id=1XmR2MSMb3cKARFk3XxmPkwz6GhAP1JxL
http://gist.github.com/mhaskar/e7e454c7cb0dd9a139b0a43691e258a0
http://rconfig.com/download
http://threatpost.com/critical-rce-flaw-in-rconfig/149847

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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. However, proof of concept for this vulnerability is available.