c|net - "Computer code that exploits a flaw in Apple Computer's Mac OS X was released publicly over the weekend. The code takes advantage of a weakness in core parts of Mac OS X and could let a person with limited privileges gain full system access. Apple provided a fix for the error-handling mechanism of the kernel last week, but the exploit appears to have been authored before then. "It appears to have been written well before the vulnerability was fixed," said Dino Dai Zovi, a researcher with Matasano Security who was credited by Apple with discovering the flaw. "It appears to be a zero-day exploit." He added that it may even "have been distributed before the patch was released." Apple representatives did not immediately return calls for comment. "