Format string vulnerability in cPanel - CVE-2017-5613
Published: April 20, 2017
Vulnerability identifier: #VU6353
CSH Severity: Critical
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/U:Red
CVE-ID: CVE-2017-5613
CWE-ID: CWE-134
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: cPanel, Inc
Affected software:
cPanel
cPanel
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a format string error within cgiemail and cgiecho binaries when processing template files. A remote authenticated attacker can create a specially crafted file, containing form string specifiers and execute arbitrary code on the target system.
Successful exploitation may allow an attacker to compromise vulnerable system.
Note: this vulnerability has been exploited in the wild and was disclosed by the Shadow Brokers leak. The exploit is known as ElegantEagle.
How to mitigate CVE-2017-5613
The vulnerability is fixed in the following versions: 54.0.36, 56.0.43, 58.0.43, and 60.0.35.