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Insecure Library Loading
Extremely critical

Mac OS X File Association Meta Data Shell Script Execution

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Release Date:  2006-02-21    Last Update:  2006-03-14    Views:  142,623

Secunia Advisory SA18963

Where:

From remote

Impact:

System access

Solution Status:

Partial Fix

Operating System:

CVE Reference(s):

Description


Michael Lehn has discovered a vulnerability in Mac OS X, which can be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to an error in the processing of file association meta data in ZIP archives (stored in the "__MACOSX" folder) and mail messages (defined via the AppleDouble MIME format). This can be exploited to trick users into executing a malicious shell script renamed to a safe file extension stored in a ZIP archive or in a mail attachment.

This can also be exploited automatically via the Safari browser when visiting a malicious web site.

Secunia has constructed a test, which can be used to check if your system is affected by this issue:
http://secunia.com/mac_os_x_command_execution_vulnerability_test/

The vulnerability has been confirmed on a fully patched system with Safari 2.0.3 (417.8), Mail 2.0.5 (746/746.2), and Mac OS X 10.4.5.


Solution:
Apply Security Update 2006-002.

Further details available to Secunia VIM customers

Provided and/or discovered by:
Michael Lehn

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Mac OS X File Association Meta Data Shell Script Execution

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