This indicates an attack attempt against a Buffer Overflow vulnerability in Citrix Provisioning Services.
The vulnerability is caused by an error when the vulnerable software handles malformed data to TCP port 6905. It allows a remote attacker to execute arbitrary code.
Citrix Citrix Provisioning Services 5.6 and prior.
System Compromise: Remote attackers can gain control of vulnerable systems.
Install the update available at the following web site: