RealNetworks RealPlayer MLTI Stream Number Remote Code Execution VulnerabilityTPTI-10-19: December 10th, 2010
TippingPoint™ IPS Customer ProtectionTippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 10151. For further product information on the TippingPoint IPS:
Vulnerability DetailsThis vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of RealNetworks RealPlayer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within RealPlayer's handling of Internet Video Recording (.ivr) files. While parsing the MLTI chunk the process trusts the field responsible for denoting the number of streams within the chunk. By modifying this value in an IVR file, an attacker can force a processing loop to overrun and corrupt heap memory. This can be abused to execute arbitrary code under the context of the user invoking RealPlayer.
Vendor ResponseRealNetworks has issued an update to correct this vulnerability. More details can be found at:
2010-08-12 - Vulnerability reported to vendor
2010-12-10 - Coordinated public release of advisory