TippingPoint Zero Day Initiative

RealNetworks RealPlayer SIPR Codec Remote Code Execution Vulnerability

ZDI-10-008: January 21st, 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 6514. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to execute code on vulnerable installations of RealNetworks RealPlayer. User interaction is required in that a user must open a malicious file or visit a malicious web site.

The specific flaw exists during the parsing of SIPR codec fields. Specifying a small length value can trigger an undersized heap allocation. This buffer can then subsequently be overflowed. This vulnerability can result in arbitrary code execution under the context 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

    2008-05-12 - Vulnerability reported to vendor
    2010-01-21 - Coordinated public release of advisory


This vulnerability was discovered by: