TippingPoint Zero Day Initiative
 

Citrix Provisioning Services Stream Service 0x40020006 Remote Code Execution Vulnerability

ZDI-12-010: January 10th, 2012

CVSS Score

Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 11860. For further product information on the TippingPoint IPS:

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 0x40020006 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.

Vendor Response

Citrix has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2011-07-22 - Vulnerability reported to vendor
    2012-01-10 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    Aniway.Anyway@gmail.com