Vulnerability identifier: #VU22514

Vulnerability risk: High

CVSSv3.1: 9.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:U/RC:C]

CVE-ID: CVE-2019-16662

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 "rootUname" parameter is passed to the "exec" function without filtering. A remote unauthenticated attacker can send a specially crafted GET request to "ajaxServerSettingsChk.php" file and execute arbitrary OS commands on the target system.

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

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/file/d/1bTpTn4-alJ8qGCEATLq-oVM6HbhE65iY/view?usp=sharing
http://drive.google.com/open?id=1OXI5cNuwWqc6y-7BgNCfYHgFPK2cpvnu
http://gist.github.com/mhaskar/ceb65fa4ca57c3cdccc1edfe2390902e
http://rconfig.com/download
http://threatpost.com/critical-rce-flaw-in-rconfig/149847
http://github.com/rapid7/metasploit-framework/tree/master/modules/exploits/unix/webapp/rconfig_inst...

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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. However, a fully functional exploit for this vulnerability is available.