Vulnerability Note VU#461187

RealPlayer file deletion overflow vulnerability

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.

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.

Systems Affected

http://www.zerodayinitiative.com/advisories/ZDI-08-046/
http://service.real.com/realplayer/security/07252008_player/en/
http://www.kb.cert.org/vuls/id/871673

Credit

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

This document was written by Ryan Giobbi.

Other Information

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