full-disclosure - TPTI-10-19: RealNetworks RealPlayer MLTI Stream Number Remote Code Execution Vulnerability

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Message-ID: <EE499D69B3D0714590B6FE9762B0461104BFE98F6A@emb01.unity.local>
Date: Fri, 10 Dec 2010 15:51:13 -0600
From: ZDI Disclosures <zdi-disclosures@...pingpoint.com>
To: "'Full Disclosure (full-disclosure@...ts.grok.org.uk)'"
	<full-disclosure@...ts.grok.org.uk>,
	"'Bugtraq (bugtraq@...urityfocus.com)'" <bugtraq@...urityfocus.com>
Subject: TPTI-10-19: RealNetworks RealPlayer MLTI Stream
 Number Remote Code Execution Vulnerability

TPTI-10-19: RealNetworks RealPlayer MLTI Stream Number Remote Code Execution Vulnerability

http://dvlabs.tippingpoint.com/advisory/TPTI-10-19

December 10, 2010

-- CVE ID:
CVE-2010-4390

-- 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 10151.
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
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 RealPlayer's handling of Internet Video
Recording (.ivr) files. While parsing the MLTI chunk the process trusts
the field responsible for denoting the number of streams within the
chunk. By modifying this value in an IVR file, an attacker can force a
processing loop to overrun and corrupt heap memory. This can be abused
to execute arbitrary code under the context of the user invoking
RealPlayer.

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

http://service.real.com/realplayer/security/12102010_player/en/

-- Disclosure Timeline:
2010-08-12 - Vulnerability reported to vendor
2010-12-10 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Aaron Portnoy and Logan Brown of TippingPoint DVLabs and Team lollersk8erz



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