bugtraq - ZDI-10-060: Sun Java Runtime Environment MixerSequencer Invalid Array Index Remote Code Execution Vulnerability

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Message-ID: <EE499D69B3D0714590B6FE9762B0461104B7086855@emb01.unity.local>
Date: Mon, 5 Apr 2010 12:31:15 -0500
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-10-060: Sun Java Runtime Environment MixerSequencer Invalid
 Array Index Remote Code Execution Vulnerability

ZDI-10-060: Sun Java Runtime Environment MixerSequencer Invalid Array Index Remote Code Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-10-060
April 5, 2010

-- CVE ID:
CVE-2010-0842

-- Affected Vendors:
Sun Microsystems

-- Affected Products:
Sun Microsystems Java Runtime

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 9651. 
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 Sun's Java Runtime Environment. User
interaction is required to exploit this vulnerability in that the target
must visit a malicious page.

The specific flaw exists within the handling of MixerSequencer objects.
When this object is used to play a MIDI file, the GM_Song structure is
populated with song data. In particular, it stores a integer value from
the file and uses it later as an index into an array of function
pointers. If this value is over 128 the process can be made to call a
pointer outside the array. This can be leveraged to execute arbitrary
code under the context of the user running the applet.

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

http://www.oracle.com/technology/deploy/security/critical-patch-updates/javacpumar2010.html

-- Disclosure Timeline:
2009-12-10 - Vulnerability reported to vendor
2010-04-05 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Peter Vreugdenhil ( http://vreugdenhilresearch.nl ) 

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