RealNetworks RealPlayer RMX Header Remote Code Execution VulnerabilityZDI-10-281: December 10th, 2010
TippingPoint™ IPS Customer ProtectionTippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 10723. For further product information on the TippingPoint IPS:
This 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 the applications support for parsing the RMX file format. When parsing the format, the application will explicitly trust 32-bits in a field used in the header for the allocation of an array. This can cause a buffer to be under-allocated and will cause a buffer overflow when initializing the array. This can lead to code execution under the context of the application.
Vendor ResponseRealNetworks has issued an update to correct this vulnerability. More details can be found at:
2010-08-25 - Vulnerability reported to vendor
2010-12-10 - Coordinated public release of advisory
CreditThis vulnerability was discovered by:
Sebastian Apelt (www.siberas.de)