ZDI-07-061: RealNetworks RealPlayer SWF Processing Remote Code Execution Vulnerability

[zdi-disclosures@xxxxxxxx]

ZDI-07-061: RealNetworks RealPlayer SWF Processing Remote Code Execution 
Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-07-061.html
October 25, 2007

-- CVE ID:
CVE-2007-2263

-- Affected Vendor:
RealNetworks

-- Affected Products:
RealNetworks RealPlayer version 10.5 

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability since February 15, 2007 by Digital Vaccine protection
filter ID 5070,5071,5072. For further product information on the 
TippingPoint IPS:

    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 parsing of SWF files. The SWF
rendering DLL RealPlayer uses fails to properly handle malformed record
headers leading to an exploitable overflow. An attacker could exploit
this vulnerability using an ActiveX control
{CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA} and embedding the malicious swf
file in the page or by convincing an affected user to directly open a
SWF file using RealPlayer.

-- 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:
2007.01.17 - Vulnerability reported to vendor
2007.02.15 - 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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