Message-ID: <OF3C69C21A.A0760A48-ON88257385.00737DC0-86257385.007FB308@3com.com>
Date: Wed, 31 Oct 2007 18:14:50 -0500
From: zdi-disclosures@...m.com
To: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com
Subject: ZDI-07-063: RealPlayer RA Field Size File
 Processing Heap Oveflow Vulnerability

ZDI-07-063: RealPlayer RA Field Size File Processing Heap Oveflow 
Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-07-063.html
October 25, 2007

-- CVE ID:
CVE-2007-2264

-- Affected Vendor:
RealNetworks RealPlayer version 10.5 

-- Affected Products:
RealPlayer 6.x

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability since April 26, 2007 by Digital Vaccine protection
filter ID 5214. For further product information on the TippingPoint IPS:

    http://www.tippingpoint.com 

-- 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 .ra/.ram file or visit a malicious web
site.

The specific flaw exists during the parsing of files with improperly
defined size field in the RA header. Specifying a large unsigned value
data can trigger a heap corruption and further result in arbitrary code
execution under the context of the logged in user.

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

   http://service.real.com/realplayer/security/10252007_player/en/

-- Disclosure Timeline:
2007.02.16 - Vulnerability reported to vendor
2007.04.26 - Digital Vaccine released to TippingPoint customers
2007.10.25 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by an anonymous researcher.

-- About the Zero Day Initiative (ZDI):
Established by TippingPoint, a division of 3Com, 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.
3Com does not re-sell the vulnerability details or any exploit code.
Instead, upon notifying the affected product vendor, 3Com 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, 3Com provides this vulnerability
information confidentially to security vendors (including competitors)
who have a vulnerability protection or mitigation product.

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