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Critical Vulnerability found in Apple Mac OS X Sandbox Mechanisms


CoreLabs Researchers discovered critical Vulnerability in Mac OS X's sandboxing mechanisms.They published the Advisory information on Nov 10,2011.

Vulnerability Description

Several of the default pre-defined sandbox profiles don't properly limit all the available mechanisms and therefore allow exercising part of the restricted functionality. Namely, sending Apple events is possible within the no-network sandbox (kSBXProfileNoNetwork). A compromised application hypothetically restricted by the use of the no-network profile may have access to network resources through the use of Apple events to invoke the execution of other applications not directly restricted by the sandbox.

It is worth mentioning that a similar issue was reported by Charlie Miller in his talk at Black Hat Japan 2008 . He mentioned a few processes sandboxed by default as well as a method to circumvent the protection. Sometime after the talk, Apple modified the mentioned profiles by restricting the use of Apple events but did not modify the generic profiles.

According to the Advisory,Apple Mac OS X 10.7.x,10.6.x,10.5.x are vulnerable .

Apple Mac OS X 10.4 is non-vulnerable. 


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