Microsoft is providing notification of the discovery and remediation of a vulnerability affecting RealNetworks RealPlayer SP version 1.1.4 and earlier and RealPlayer 11.1 and earlier. Microsoft discovered and disclosed the vulnerability under coordinated vulnerability disclosure to the affected vendor, RealNetworks, Inc. RealNetworks, Inc. has remediated the vulnerability in their software.
A remote code execution vulnerability exists in the way that RealPlayer handles multiple instantiations of the RealPlayer ActiveX plug-in in multiple Internet Explorer browser windows. An attacker could exploit this vulnerability, causing the browser to exit unexpectedly, allowing the attacker to execute arbitrary code. An attacker who successfully exploited this vulnerability could gain the same user rights as the logged-on user. If a user is logged on with administrative user rights, an attacker who successfully exploited this vulnerability could take complete control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.
Microsoft Vulnerability Research reported this issue to and coordinated with RealNetworks, Inc. to ensure remediation of this issue. The vulnerability has been assigned the entry, CVE-2010-3001, in the Common Vulnerabilities and Exposures list. For more information, including information about updates from RealNetworks, see RealNetworks, Inc. Releases Update to Address Security Vulnerabilities.