Researchers make Mac OS X worm

Posted on Thursday, Jul 19 2007 @ 02:01 CEST by Thomas De Maesschalck
Researchers who claim they've created a worm for Mac OS X say Apple still has a very long way to go on security:
Identified only as the researcher behind the Information Security Sell Out blog, he or she on Sunday announced that a still-unpatched bug in mDNSResponder, a component of Apple's Bonjour automatic network configuring service, could be exploited by a worm. Apple's May security update, dubbed 2007-005, included a fix for the mDNS bug.

"[My worm] is in the same code base, obviously, but that is where the similarity to the recently patched issues ends," said the Info Sec researcher in an e-mail interview. "When Apple fixed the previous issues, they did not take care of the entire code base and there are a lot of bugs there...some are exploitable, like the one I am using, while others are not. But the fact remains that Apple did a horrible job in fixing this package."

According to Info Sec, the worm is fully automated and ready to use. "It would be considered a fully weaponized exploit and fully automated," said the researcher. "This is really no different than other worms we have seen [on the Windows platform]. Other than that, I am not able to give any more details."

Another researcher, however, questioned whether Info Sec crafted the worm in only a few hours, as claimed. "Writing the exploit in one day...unlikely for anything other than a stack overflow," said Dave Aitel, the chief technology officer at Immunity Inc., the Miami Beach, Fla.-based security company best known for its CANVAS penetration testing ("pentest") software. "So most likely he found a stack overflow in mDNS, which is perfectly possible. It is open source, after all."
More info at Infoworld.


About the Author

Thomas De Maesschalck

Thomas has been messing with computer since early childhood and firmly believes the Internet is the best thing since sliced bread. Enjoys playing with new tech, is fascinated by science, and passionate about financial markets. When not behind a computer, he can be found with running shoes on or lifting heavy weights in the weight room.



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