full-disclosure - ZDI-10-007: RealNetworks RealPlayer SMIL getAtom Remote Code Execution Vulnerability

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Message-ID: <EE499D69B3D0714590B6FE9762B046110388145603@emb01.unity.local>
Date: Thu, 21 Jan 2010 10:53:45 -0600
From: ZDI Disclosures <zdi-disclosures@...pingpoint.com>
To: "'full-disclosure@...ts.grok.org.uk'" <full-disclosure@...ts.grok.org.uk>, 
	"'bugtraq@...urityfocus.com'" <bugtraq@...urityfocus.com>
Subject: ZDI-10-007: RealNetworks RealPlayer SMIL getAtom
 Remote Code Execution Vulnerability

ZDI-10-007: RealNetworks RealPlayer SMIL getAtom Remote Code Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-10-007
January 21, 2010

-- CVE ID:
CVE-2009-4257

-- 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 5907. 
For further product information on the TippingPoint IPS, visit:

    http://www.tippingpoint.com

-- Vulnerability Details:
This vulnerability allows attackers to execute arbitrary code on
vulnerable installations of 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 within the smlrender.dll library responsible
for parsing SMIL files. A lack of proper string length checks can result
in the overflow of a static heap buffer. Exploitation of this overflow
can lead to arbitrary code execution under the context of the user
running the process.

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

http://service.real.com/realplayer/security/01192010_player/en/

-- Disclosure Timeline:
2008-02-07 - Vulnerability reported to vendor
2010-01-21 - 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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