Aruba ClearPass prior to 6.6.9 has a vulnerability in the API that helps to coordinate cluster actions. An authenticated user with the "mon" permission could use this vulnerability to obtain cluster credentials which could allow privilege escalation. This vulnerability is only present when authenticated as a user with "mon" permission.

Aruba ClearPass, all versions of 6.6.x prior to 6.6.9 are affected by an authentication bypass vulnerability, an attacker can leverage this vulnerability to gain administrator privileges on the system. The vulnerability is exposed only on ClearPass web interfaces, including administrative, guest captive portal, and API. Customers who do not expose ClearPass web interfaces to untrusted users are impacted to a lesser extent.

Linux kernel versions 4.9+ can be forced to make very expensive calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() for every incoming packet which can lead to a denial of service

Linux kernel versions 4.9+ can be forced to make very expensive calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() for every incoming packet which can lead to a denial of service.

All versions of Aruba ClearPass prior to 6.6.8 contain reflected cross-site scripting vulnerabilities. By exploiting this vulnerability, an attacker who can trick a logged-in ClearPass administrative user into clicking a link could obtain sensitive information, such as session cookies or passwords. The vulnerability requires that an administrative users click on the malicious link while currently logged into ClearPass in the same browser.

Aruba ClearPass 6.6.3 and later includes a feature called "SSH Lockout", which causes ClearPass to lock accounts with too many login failures through SSH. When this feature is enabled, an unauthenticated remote command execution vulnerability is present which could allow an unauthenticated user to execute arbitrary commands on the underlying operating system with "root" privilege level. This vulnerability is only present when a specific feature has been enabled. The SSH Lockout feature is not enabled by default, so only systems which have enabled this feature are vulnerable.

An access restriction bypass vulnerability in HPE Aruba ClearPass Policy Manager version 6.6.x was found.

An arbitrary command execution vulnerability in HPE Aruba ClearPass Policy Manager version 6.6.x was found.

A reflected cross site scripting vulnerability in HPE Aruba ClearPass Policy Manager version 6.6.x was found.

An authenticated remote code execution vulnerability in HPE Aruba ClearPass Policy Manager version 6.6.x was found.

A privilege escalation vulnerability in HPE Aruba ClearPass Policy Manager version 6.6.x was found.

An unauthenticated remote code execution vulnerability in HPE Aruba ClearPass Policy Manager version 6.6.x was found.