Rule: -- Sid: 1953 -- Summary: This event is generated when a request is made to discover the Process ID (PID) of the Remote Procedure Call (RPC) amd. -- Impact: Information disclosure. This request can allow an attacker to discover the PID associated with amd. -- Detailed Information: The amd RPC service implements the automounter daemon on UNIX hosts. The amd service automatically mounts and unmounts requested file systems. An attacker can make a request to amd to discover its PID. Learning the PID may help an attacker guess a range of likely PIDs associated with other running services that are either started before or after amd. This may facilitate an attack against other running processes. -- Affected Systems: Any system running amd. -- Attack Scenarios: An attacker may request the PID associated with amd. This information may be used to attack other running processes if the attacker has some means of access to the target host. -- Ease of Attack: Simple. Execute the command 'amq -p -T -h hostname/IP'. -- False Positives: None Known. -- False Negatives: None Known. -- Corrective Action: Limit remote access to RPC services. Filter RPC ports at the firewall to ensure access is denied to RPC-enabled machines. Disable unneeded RPC services. -- Contributors: Original rule written by Brian Caswell <bmc@sourcefire.com> Sourcefire Research Team Judy Novak <judy.novak@sourcefire.com> -- Additional References: --
