‘Citrix EdgeSight Launcher Service Code Execution Vulnerability’
‘The information has been provided by AbdulAziz Hariri.
The original article can be found at: http://www.zerodayinitiative.com/advisories/ZDI-11-226/‘
* Citrix EdgeSight
Authentication is not required to exploit this vulnerability.
The flaw exists within the LauncherService.exe component which listens by default on TCP port 18747. When handling a request the process trusts a user supplied field in the packet specifying the length of data to follow, the process then copies the user supplied data, without validation, into a fixed-length buffer on the heap. A remote attacker can exploit this vulnerability to execute arbitrary code under the context of the SYSTEM user.
Citrix has issued an update to correct this vulnerability. More details can be found at:
2011-01-21 – Vulnerability reported to vendor
2011-06-27 – Coordinated public release of advisory’