This specific Firefox vulnerability is actually cross-platform. In fact, making the malicious code ‘work’ on all platforms is trivial as you only need to get rid of the checks looking for the Windows version.
An Exploit for Mozilla’s Firefox version 17 is making headlines, not simply because it is a zero-day but mainly because it appears to be part of a U.S. government program to uncover the identity of people using the Tor Browser to view child pornography.
Pinterest has gained a lot of momentum and become one of the highest referral traffic sites for retailers. As such, it is not a big surprise that it is a popular choice for scammers and malware authors.