Advisory Details

January 10th, 2012

Citrix Provisioning Services streamprocess.exe vDisk Name Parsing Remote Code Execution Vulnerability

CVE ID
CVSS SCORE	10.0, AV:N/AC:L/Au:N/C:C/I:C/A:C
AFFECTED VENDORS	Citrix
AFFECTED PRODUCTS	Citrix Provisioning Services
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Citrix Provisioning Services. Authentication is not required to exploit this vulnerability. The specific flaw exists within the streamprocess.exe component which listens for UDP traffic on multiple ports, beginning with 6905. When handling a packet which requests a vDisk name, the user-supplied length value is not properly validated. A remote attacker can exploit this vulnerability to execute arbitrary code under the context of the SYSTEM user.
ADDITIONAL DETAILS	Citrix has issued an update to correct this vulnerability. More details can be found at: http://support.citrix.com/article/CTX130846
DISCLOSURE TIMELINE	2011-04-01 - Vulnerability reported to vendor 2012-01-10 - Coordinated public release of advisory
CREDIT	AbdulAziz Hariri of ThirdEyeTesters

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