TippingPoint Digital Vaccine Laboratories
DID YOU KNOW... The ZDI has published over 1100 high-risk vulnerabilities since the inception of the program.

RealNetworks RealPlayer SIPR Stream Frame Dimensions Remote Code Execution Vulnerability

TPTI-10-17: December 10th, 2010


Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 9674. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of RealNetworks RealPlayer. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the drv1.dll module. Code responsible for parsing SIPR stream metadata trusts frame width and height values from the input file. By crafting particular values an integer value used in a loop can be made to wrap negatively. The loop will subsequently overflow a static heap buffer during an inline memory copy. By crafting a malicious .rm file an attacker can exploit this vulnerability remotely using the RealPlayer ActiveX control.

Vendor Response

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

Disclosure Timeline

    2010-02-26 - Vulnerability reported to vendor
    2010-12-10 - Coordinated public release of advisory


This vulnerability was discovered by: