Apple has released an update that patches more than a dozen OS X vulnerabilities, several of which can lead to the remote execution of malicious code.
The most serious vulnerability resides in an OS X feature called mDNSResponder, which enables computers to locate and connect to devices such as printers and webcams on a local network. An attacker could use it to execute code by sending malicious packets to Macs connected to the same subnet, making the exploit ideal for use in internet cafes and offices.
Code exploiting the vulnerability has already been circulated by Immunity, a company that provides intelligence to security providers, according to Immunity's CTO, Dave Aitel.
"Remote roots like this don't come out every day," he said of the vulnerability.
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