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AUSCERT External Security Bulletin Redistribution
Citrix Provisioning Services streamprocess.exe Remote Code
21 January 2011
AusCERT Security Bulletin Summary
Product: Citrix Provisioning Services
Publisher: Zero Day Initiative
Operating System: Windows
Impact/Access: Administrator Compromise -- Remote/Unauthenticated
Execute Arbitrary Code/Commands -- Remote/Unauthenticated
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Citrix Provisioning Services streamprocess.exe Remote Code Execution
ZDI-11-023: January 20th, 2011
Citrix Provisioning Services
TippingPoint IPS Customer Protection
TippingPoint IPS customers are protected against this vulnerability by Digital
Vaccine protection filter ID 10781. For further product information on the
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
by default on UDP port 6095. When handling a packet of type 0x40020010 the
process blindly copies user supplied data into a fixed length buffer on the
stack. 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
2010-06-09 - Vulnerability reported to vendor
2011-01-20 - Coordinated public release of advisory
This vulnerability was discovered by:
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