University of Wisconsin Genuine OS X Hack Challenge

The University of Wisconsin has launched a competition in which hackers are challenged to break into an OS X system connected to the internet.



From the page:
Mac OS X Security Challenge
Mon 6 March 2006 9:00 PM CST

This challenge will end on Fri 10 March 2006 10:00 AM CST
This machine will be moving to a new network sometime the evening of 6 March; the cutover will be transparent
Mon 6 March 2006 10:00 AM CST

In response to the woefully misleading ZDnet article, Mac OS X hacked under 30 minutes, the academic Mac OS X Security Challenge has been launched.

The ZDnet article, and almost all of the coverage of it, failed to mention a very critical point: anyone who wished it was given a local account on the machine (which could be accessed via ssh). Yes, there are local privilege escalation vulnerabilities; likely some that are "unpublished". But this machine was not hacked from the outside just by being on the Internet. It was hacked from within, by someone who was allowed to have a local account on the box. That is a huge distinction.

Almost all consumer Mac OS X machines will:

Not give any external entities local account access
Not even have any ports open
In addition to the above, most consumer machines will also be behind personal router/firewall devices, further reducing exposure
The challenge is as follows: simply alter the web page on this machine, test.doit.wisc.edu. The machine is a Mac mini (PowerPC) running Mac OS X 10.4.5 with Security Update 2006-001, has two local accounts, and has ssh and http open - a lot more than most Mac OS X machines will ever have open. Email das@doit.wisc.edu if you feel you have met the requirements, along with the mechanism used. The mechanism will then be reported to Apple and/or the entities responsible for the component(s).

Mac OS X is not invulnerable. It, like any other operating system, has security deficiencies in various aspects of the software. Some are technical in nature, and others lend themselves to social engineering trickery. However, the general architecture and design philosophy of Mac OS X, in addition to usage of open source components for most network-accessible services that receive intense peer scrutiny from the community, make Mac OS X a very secure operating system. There have been serious vulnerabilities in Mac OS X that could be taken advantage of; however, most Mac OS X "vulnerabilities" to date have relied on typical trojan social engineering tactics, not genuine vulnerabilities. The recent Safari vulnerability was promptly addressed by Apple, as are any exploits reported to Apple. Apple does a fairly good job with regard to security, and has greatly improved its reporting processes after pressure from institutional Mac OS X users: Apple is responsive to security concerns with Mac OS X, which is one of the most important pieces of the security picture.

The "Mac OS X hacked under 30 minutes" story doesn't mention that local access was granted to the system. While local privilege escalation exploits can certainly be dangerous - and used in conjunction with things like the above Safari exploit - this isn't very informative with regard to the general security of a Mac OS X machine sitting on the Internet.

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