Zero-day vulnerability in cPanel

Format string vulnerability
CVE-2017-5613

The exploit code was disclosed by the Shadow Brokers leak dubbed ElegantEagle, exploiting vulnerability in cgiemail.

Known malware:

ElegantEagle exploit

Vulnerability details

Advisory: SB2017011801 - Multiple vulnerabilities in cPanel

Vulnerable component: cPanel

CVE-ID: CVE-2017-5613

CVSSv3 score: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE-ID: CWE-134 - Use of Externally-Controlled Format String

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.

Vulnerability Scanning SaaS

Vulnerability scanning SaaS service is online 3-rd generation vulnerability scanner with scheduled assessments and vulnerability subscription. You can use service to check security of your network perimeter.