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TPTI-09-04: Apple Terminal xterm Resize Escape Sequence Memory Corruption Vulnerability
From: dvlabs <dvlabs () tippingpoint com>
Date: Tue, 2 Jun 2009 15:27:07 -0500

TPTI-09-04: Apple Terminal xterm Resize Escape Sequence Memory Corruption
Vulnerability
http://dvlabs.tippingpoint.com/advisory/TPTI-09-04
June 2, 2009

-- CVE ID:
CVE-2009-1717

-- Affected Vendors:
Apple

-- Affected Products:
Apple OS X

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 8152.
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 Apple Terminal. User interaction is required
to exploit this vulnerability in that the target must visit a malicious
page. 

The specific flaw exists in the handling of 'CSI[4' xterm window
resizing escape code. When a very low negative value for (x, y) size is
set, an integer overflow occurs resulting in a memory corruption. This
can be further leveraged to execute arbitrary code under the context of
the logged in user.

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

http://support.apple.com/kb/HT3549

-- Disclosure Timeline:
2009-05-06 - Vulnerability reported to vendor
2009-06-02 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * James King, TippingPoint DVLabs

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