RealNetworks RealPlayer Skin Parsing Remote Code Execution VulnerabilityZDI-10-010: January 21st, 2010
TippingPoint™ IPS Customer ProtectionTippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 8493. For further product information on the TippingPoint IPS:
This vulnerability allows remote attackers to execute code on vulnerable installations of RealNetworks RealPlayer. User interaction is required in that a user must visit a malicious website or open a malicious file and accept a dialog to switch player skins.
The specific flaw exists during parsing of malformed RealPlayer .RJS skin files. While loading a skin the application copies certain variable length fields from the extracted file named web.xmb into a statically sized buffer. By crafting these fields appropriately an attack can cause the process to overflow the buffer. This can be leveraged to execute arbitrary code with the privileges of the application.
Vendor ResponseRealNetworks has issued an update to correct this vulnerability. More details can be found at:
2009-01-15 - Vulnerability reported to vendor
2010-01-21 - Coordinated public release of advisory
CreditThis vulnerability was discovered by:
Peter Vreugdenhil (firstname.lastname@example.org)