The vulnerability is being exploited to install a remote-access trojan dubbed McRat. The exploit is reportedly different from the one used to attack Facebook, Twitter, Apple, and several other companies last month. It is not known if this particular Java vulnerability is on Windows only or on Linux and Mac OS X, too. If you don’t want any chance of being infected, the best thing to do is to uninstall Java altogether, researchers from FireEye say. The vulnerability leads to arbitrary memory read and write in JVM process.
Source: https://thehackernews.com/2013/03/another-java-zero-day-vulnerability.html