bugtraq - ZDI-10-053: Sun Java Runtime Environment MIDI File metaEvent Remote Code Execution Vulnerability

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Message-ID: <EE499D69B3D0714590B6FE9762B0461104B7086836@emb01.unity.local>
Date: Mon, 5 Apr 2010 10:15:39 -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-10-053: Sun Java Runtime Environment MIDI File metaEvent Remote
 Code Execution Vulnerability

ZDI-10-053: Sun Java Runtime Environment MIDI File metaEvent Remote Code Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-10-053
April 5, 2010

-- CVE ID:
CVE-2010-0844

-- 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 9342. 
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 MIDI streams. When the
code responsible for creating a MixerSequencer object from a MIDI stream
encounters an 0xFF byte, it assumes it has reached a metaEvent. It then
proceeds to parse out a variable-length field. By abusing the way this
structure is stored an attacker can corrupt a pointer address later
allowing a NULL byte write to an arbitrary memory address. This can be
leveraged to execute remote 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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