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[Full-disclosure] http://www.zerodayinitiative.com/advisories/ZDI-08-046
From: zdi-disclosures () 3com com
Date: Fri, 25 Jul 2008 16:27:06 -0500

ZDI-08-046: RealNetworks RealPlayer Library File Deletion Stack Overflow 
Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-08-046
July 25, 2008

-- CVE ID:
ZDI-CAN-231

-- Affected Vendors:
RealNetworks

-- Affected Products:
RealNetworks RealPlayer

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 5734. 
For further product information on the TippingPoint IPS, visit:

    http://www.tippingpoint.com

-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
systems with vulnerable installations of the RealNetworks RealPlayer.
User interaction is required to exploit this vulnerability in that the
target must visit a malicious page or open a malicious file.

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.

-- Vendor Response:
RealNetworks has issued an update to correct this vulnerability. More
details can be found at:

http://service.real.com/realplayer/security/07252008_player/en/

-- Disclosure Timeline:
2007-11-02 - Vulnerability reported to vendor
2008-07-25 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Anonymous

-- About the Zero Day Initiative (ZDI):
Established by TippingPoint, The Zero Day Initiative (ZDI) represents 
a best-of-breed model for rewarding security researchers for responsibly
disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research
through the ZDI can find more information and sign-up at:

    http://www.zerodayinitiative.com

The ZDI is unique in how the acquired vulnerability information is
used. TippingPoint does not re-sell the vulnerability details or any
exploit code. Instead, upon notifying the affected product vendor,
TippingPoint provides its customers with zero day protection through
its intrusion prevention technology. Explicit details regarding the
specifics of the vulnerability are not exposed to any parties until
an official vendor patch is publicly available. Furthermore, with the
altruistic aim of helping to secure a broader user base, TippingPoint
provides this vulnerability information confidentially to security
vendors (including competitors) who have a vulnerability protection or
mitigation product.

Our vulnerability disclosure policy is available online at:

    http://www.zerodayinitiative.com/advisories/disclosure_policy/

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