RealNetworks RealPlayer Upsell.htm getqsval Remote Code Execution VulnerabilityZDI-10-276: December 10th, 2010
TippingPoint™ IPS Customer ProtectionTippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 10589. 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 Upsell.htm component of the RealPlayer default installation. Due to a failure to properly sanitize user-supplied input, it is possible for an attacker to inject arbitrary code into the RealOneActiveXObject process via the getqsval function. This can be abused to bypass the Local Machine Zone security policy and load unsafe controls. Successful exploitation of this issue leads to remote code execution under the context of the RealPlayer application.
Vendor ResponseRealNetworks has issued an update to correct this vulnerability. More details can be found at:
2010-06-30 - Vulnerability reported to vendor
2010-12-10 - Coordinated public release of advisory
CreditThis vulnerability was discovered by: