TippingPoint Zero Day Initiative

RealNetworks RealPlayer ICY Protocol StreamTitle Remote Code Execution Vulnerability

ZDI-10-270: December 10th, 2010


CVSS Score

Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 8344. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerability installations of RealNetworks RealPlayer. User interaction is required to exploit this vulnerability in that the target must open a malicious SHOUTcast Stream.

The specific flaw exists in the processing of the StreamTitle tag in a SHOUTcast stream using the ICY protocol. A specially crafted string supplied as the property for the title can result in a failed allocation of heap memory. This then causes the freeing of critical pointers that are subsequently used after freeing. Successful exploitation of this vulnerability can lead to system compromise under the credentials of the currently logged in user.

Vendor Response

RealNetworks has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2009-06-25 - Vulnerability reported to vendor
    2010-12-10 - Coordinated public release of advisory


This vulnerability was discovered by: