CVE-2020-15614: 
Control Web Panel vulnerability analysis and mitigation

This vulnerability (CVE-2020-15614) affects CentOS Web Panel cwp-e17.0.9.8.923. The vulnerability was discovered and disclosed in June 2020, allowing remote attackers to execute arbitrary code without requiring authentication (ZDI Advisory).

The vulnerability exists within the ajax_php_pecl.php file of CentOS Web Panel. When parsing the 'cha' parameter, the process fails to properly validate user-supplied strings before using them to execute system calls. The vulnerability has been assigned a CVSS score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), indicating critical severity (ZDI Advisory).

An attacker can leverage this vulnerability to execute arbitrary code in the context of root on affected systems. The high CVSS score indicates that successful exploitation could lead to complete system compromise with no special requirements for access (ZDI Advisory).

The vulnerability requires no authentication to exploit and can be triggered remotely. The attack complexity is considered low, making it relatively straightforward for attackers to exploit (ZDI Advisory).

Given the nature of the vulnerability, the primary mitigation strategy is to restrict interaction with the service to trusted machines. Only clients and servers that have a legitimate procedural relationship with the service should be permitted to communicate with it. This can be accomplished through firewall rules and whitelisting (ZDI Advisory).