File: 2487.txt

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Rule:
--

Sid:
2487

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Summary:
This event is generated when an attempt is made to exploit a buffer overflow 
associated with winzip's processing of certain MIME archive files. 

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Impact:
A successful attack may permit a buffer overflow that allows the execution
of arbitrary code at the privilege level of the user running winzip.

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Detailed Information:
Winzip is a program that is used for file compression on Windows hosts.
A buffer overflow exists when parsing specific header fields for certain 
MIME file types.  An overly long value passed to specific Content-Type attributes
may trigger the buffer overflow and allow the execution of arbitrary code
in the context of the user running winzip.

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Affected Systems:
Winzip 6.x, 7.x, 8.0, 8.1 SR-1, 8.1, Winzip 9.0 beta versions

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Attack Scenarios:
An attacker can entice a user to open a malformed MIME file that will
invoke winzip to process it, possibly causing a a buffer overflow 
and the subsequent execution of arbitrary code on the vulnerable host.

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Ease of Attack:
Simple.

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False Positives:
None known.

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False Negatives:
None known.

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Corrective Action:
Upgrade to the latest non-affected version of the software.

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Contributors:
Sourcefire Research Team
Brian Caswell <bmc@sourcefire.com>
Judy Novak <judy.novak@sourcefire.com>

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Additional References

Bugtraq:
http://securityfocus.com/bid/9758

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