Symantec has discovered a new form of Java malware that infects both Apple and Windows computers. If opened, both forms of malware could launch a Trojan horse that could trigger a back door on the computer. The malware exploits the Oracle Java SE Remote Java Remote Java Runtime Environment Code Execution Vulnerability (CVE-2012-0507) The Trojan for Windows can send information about the infected computer and disk, its memory usage, OS version and user name, in addition to downloading and executing files and opening shells to receive commands.
Source: https://threatpost.com/new-java-malware-exploits-both-windows-and-mac-users-042412/76476/