CVE-2018-9021

Vulnerability

An authentication bypass vulnerability exists in CA Privileged Access Manager versions 2.8.2 and earlier. The flaw resides in the ajax_cmd.php file, which does not properly enforce authentication, allowing remote attackers to bypass authentication mechanisms.

Exploitation

An attacker can exploit this vulnerability by sending specially crafted HTTP requests to the ajax_cmd.php endpoint without requiring any prior authentication. No user interaction or special network position is needed beyond network access to the vulnerable service.

Impact

Successful exploitation allows the attacker to execute arbitrary commands on the underlying system with the privileges of the web server process. This can lead to full compromise of the affected system, including data disclosure, modification, or denial of service.

Mitigation

The vendor, CA Technologies (Broadcom), has released security updates to address this vulnerability. Users should upgrade to a fixed version as indicated in the security notice [1]. If immediate patching is not possible, restrict network access to the affected service and monitor for suspicious requests.