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             AUSCERT External Security Bulletin Redistribution

                        ESB-2009.0524 -- [Mac][OSX]
               Apple Terminal xterm: Execute Arbitrary Code
                                3 June 2009


        AusCERT Security Bulletin Summary

Product:              Apple Terminal xterm
Publisher:            Zero Day Initiative
Operating System:     Mac OS X
Impact:               Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated
CVE Names:            CVE-2009-1717

Original Bulletin:    http://dvlabs.tippingpoint.com/advisory/TPTI-09-04

- --------------------------BEGIN INCLUDED TEXT--------------------

TPTI-09-04: Apple Terminal xterm Resize Escape Sequence Memory Corruption
June 2, 2009

- -- CVE ID:

- -- Affected Vendors:

- -- 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:


- -- 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

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:


- -- 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

- --------------------------END INCLUDED TEXT--------------------

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