ZDI-10-211: RealNetworks Realplayer RecordClip Parameter Injection Remote Code Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-10-211
October 15, 2010

-- CVE ID:
CVE-2010-3749

-- CVSS:
9, (AV:N/AC:L/Au:N/C:P/I:P/A:C)

-- 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 10057.
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.

The specific flaw exists within the browser plugins provided by
RealNetworks. The RecordClip method can be access via the ActiveX
control or the Firefox plugin. By injecting a specific character into
the arguments to this method, invalid parameters can be passed to a
child process that is launched on the local system. This parameter
injection allows an attacker to download and subsequently execute a file
on a target system, thus allowing for remote code execution.

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

http://service.real.com/realplayer/security/10152010_player/en/

-- Disclosure Timeline:
2010-01-06 - Vulnerability reported to vendor
2010-10-15 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Sean de Regge

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