TippingPoint Zero Day Initiative

RealNetworks RealPlayer ASMRulebook Remote Code Execution Vulnerability

ZDI-10-005: 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 5783. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to execute code on vulnerable installations of 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 files with improperly defined ASMRuleBook structures. A controllable memory allocation allows for an attacker to corrupt heap memory. Attacker controlled data from the corrupt heap is later used as an object pointer which can be leveraged to execute arbitrary code in the context of the currently logged in user.

Vendor Response

Disclosure Timeline

    2007-11-07 - Vulnerability reported to vendor
    2010-01-21 - Coordinated public release of advisory


This vulnerability was discovered by: