RealNetworks RealPlayer SIPR Stream Frame Dimensions Remote Code Execution VulnerabilityTPTI-10-17: December 10th, 2010
TippingPoint™ IPS Customer ProtectionTippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 9674. For further product information on the TippingPoint IPS:
Vulnerability DetailsThis 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 ResponseRealNetworks has issued an update to correct this vulnerability. More details can be found at:
2010-02-26 - Vulnerability reported to vendor
2010-12-10 - Coordinated public release of advisory