There is an integer overflow in the ffs_mountfs() function, which is used by Apple's OS X operating system to handle UFS disc images.
There is an integer overflow error in the ffs_mountfs() function that may occur when an OS X system opens a UFS disc image. To trigger the overflow, an attacker would need to convince a user to open a specially crafted disc image. Note that the Safari web browser's default settings consider UFS disc images to be a safe file type, and will automatically open them after downloading.
A remote, unauthenticated attacker with the ability to supply a specially crafted DMG file may be able to cause an affected system to crash, thereby creating a denial of service. The original reporter states that an attacker may also be able to execute arbitrary code using this vulnerability. However, this has not been confirmed.
This issue was reported by LMH on the month of Apple bugs website.
This document was written by Ryan Giobbi.
|Date First Published:||2007-01-16|
|Date Last Updated:||2007-03-13 21:32 UTC|