Androïd 4.1.1 affected by Heartbleed...

So if you have such an OS on your device, you may wish to upgrade to a newer version. Would it be sufficient?

No, it won't.

Google has issued a fix, and it is now up to its partners to implement it. In the meantime, if you want to check your device, Lookout issued a specific app for this : Heart Bleed Detector

So, now you know...