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RealPlayer file deletion overflow vulnerability

Vulnerability Note VU#461187

Original Release Date: 2008-07-28 | Last Revised: 2008-07-28


RealPlayer contains a buffer overflow vulnerability that may allow an attacker to execute code on a vulnerable system.


RealPlayer media player that is distributed by RealNetworks. RealPlayer supports streaming and local media.

Per the Zero Day Initiative advisory ZDI-08-046:
The specific flaw exists in RealPlayer's rjbdll.dll module when handling the deletion of media library files. An attacker could exploit this vulnerability using an ActiveX control {FDC7A535-4070-4B92-A0EA-D9994BCC0DC5} to import a vulnerable file into the user's media library. Upon deletion of this file, an exploitable stack based buffer overflow can be triggered.


By convincing a user to visit a website, a remote attacker may be able to execute arbitrary code.



RealPlayer updates for multiple operating systems are available on the RealNetworks support site. Users are encouraged to apply updates as soon as possible.

Disable Active X control

Setting the kill bit for the {FDC7A535-4070-4B92-A0EA-D9994BCC0DC5} CLSID may prevent this vulnerability from being exploited by a remote attacker. See US-Cert Vulnerability Note VU#871673 for more information on how to disable this control.

Vendor Information


RealNetworks, Inc. Affected

Updated:  July 28, 2008



Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.


See for more information.

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CVSS Metrics

Group Score Vector



Thanks to ZDI for information that was used in this report.

This document was written by Ryan Giobbi.

Other Information

CVE IDs: None
Severity Metric: 25.31
Date Public: 2008-07-25
Date First Published: 2008-07-28
Date Last Updated: 2008-07-28 19:54 UTC
Document Revision: 3

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