[NEWS] Mac OS X Dashboard Arbitrary Widget Injection

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  Mac OS X Dashboard Arbitrary Widget Injection
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SUMMARY

"Mac OS X is the latest version of the Mac OS, the operating system 
software for Macintosh computers. It consists of two main parts: Darwin, 
an open source UNIX-like environment which is based on the BSD source tree 
and the Mach microkernel, adapted and further developed by Apple Computer 
with involvement from independent developers; and a proprietary GUI named 
Aqua, developed by Apple."

Combination of Safari and Dashboard in OS X are vulnerable to arbitrary 
widget injection, exploiting this vulnerability may lead to arbitrary code 
execution and allows malicious attacker to gain full control over the 
system.

DETAILS

Vulnerable Systems:
 * Mac OS X version 10.4

Immune Systems:
 * Mac OS X version 10.4.1 or newer

Dashboard in combination with Safari in Mac OS X contains a flaw that may 
allow a remote attacker to inject arbitrary widgets. The issue is 
triggered when the 'Open "safe" files after downloading' option in Safari 
is enabled. It is possible that the flaw may allow a remote attacker to 
create a malicious web page that contains an embedded META tag to trigger 
Safari to download a malicious widget, which would be automatically 
installed under the /Library/Widgets or ~/Library/Widgets directory 
without any user intervention resulting in a loss of integrity.

Workaround:
Disable the 'Open "safe" files after downloading' option in Safari.


ADDITIONAL INFORMATION

The original article can be found at:  
<http://stephan.com/widgets/zaptastic/> 
http://stephan.com/widgets/zaptastic/,  
<http://www1.cs.columbia.edu/~aaron/files/widgets/> 
http://www1.cs.columbia.edu/~aaron/files/widgets/ and  
<http://www.osvdb.org/16499> http://www.osvdb.org/16499



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