Advisory Details

January 10th, 2012

Citrix Provisioning Services Stream Service 0x40020000 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
TREND MICRO CUSTOMER PROTECTION	Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID ['11860']. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
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 flaw exists within the streamprocess.exe component. This process listens on UDP port 6905. When handling a request type 0x40020000 the process uses the user supplied length in an attempted bounds check before copying to a local stack buffer. A remote attacker can exploit this vulnerability to execute arbitrary code under the context of SYSTEM.
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	2011-07-22 - Vulnerability reported to vendor 2012-01-10 - Coordinated public release of advisory
CREDIT	Aniway.Anyway@gmail.com

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