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Mac malware involving Java

Posted by
Edited on
‎04-05-2012 09:55 PM

Customer Expert

Member Since: ‎11-14-2006
Posts: 6,433
Message 1 of 4 (4,748 Views)

Mac malware involving Java

[ Edited ]

Since I am one of the people who doesn't run special software to protect my Mac from infections, I note that we just ran Software Update to patch a vulnerability in Java.


This update won't be available if you do not have Java installed. You also wouldn't be exposed to this malware in that case.


Yes, there is a specific problem. Yes, Apple took a while to fix it.


Edit to add links now that I'm on my desktop rather than on my iPad:


See Apple knowledge base:



Ars Technica has more details:


Posted by
Customer Expert

Member Since: ‎11-14-2006
Posts: 6,433
Message 2 of 4 (4,713 Views)

Re: Mac malware involving Java

It's my understanding that there is a followup update to Java as well. 

Run Software Update  (Apple menu > Software Update) to update Java. 


Read this article that shows how you can tell if you are infected by reading default values from the Terminal. That's a read-only detection using the command-line terminal you already have on your computer:


Posted by
Networking Expert

Member Since: ‎07-04-2003
Posts: 3,567
Message 3 of 4 (4,706 Views)

Re: Mac malware involving Java

Note: The second update is only for Lion and not for Snow Leopard.


Posted by
Mac Expert

Member Since: ‎12-01-2003
Posts: 5,829
Message 4 of 4 (4,625 Views)

Re: Mac malware involving Java

It should be noted that there is yet another update for Java available from Software Update. This one disables the java browser plugin by default; also, if you manually re-enable it and go a while without using it, the plugin will again be automatically disabled. This behavior is probably Safari-specific.