#VU22195 Command Injection in FusionPBX - CVE-2019-16965

Vulnerability identifier: #VU22195

Vulnerability risk: Medium

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-16965

CWE-ID: CWE-77

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FusionPBX
Server applications / SCADA systems

Vendor: FusionPBX

Description

The vulnerability exists due to a lack of input validation in the "resources/cmd.php" file. A remote authenticated administrator can execute arbitrary commands on the host as www-data.

Mitigation
Install updates released on 15/08/2019 on 4.4 and Master branches.

Vulnerable software versions

FusionPBX: Master

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External links
https://github.com/fusionpbx/fusionpbx/commit/6baad9af1bc55c80b793af3bd1ac35b39c20b173
https://resp3ctblog.wordpress.com/2019/10/19/fusionpbx-sofia-api-command-injection-2/

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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