#VU30951 Improper access control in cPanel - CVE-2016-10820

Vulnerability identifier: #VU30951

Vulnerability risk: High

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2016-10820

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

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

Vendor: cPanel, Inc

Description

The vulnerability allows a remote authenticated user to execute arbitrary code.

cPanel before 55.9999.141 allows daemons to access their controlling TTYs (SEC-31).

Mitigation
Install update from vendor's website.

Vulnerable software versions

cPanel: 11.54.0.0 - 11.54.0.19

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External links
https://documentation.cpanel.net/display/CL/56+Change+Log
https://forums.cpanel.net/threads/cpanel-tsr-2016-0002-full-disclosure.534481/

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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.