Updated Adobe on Tuesday patched a hole in its ubiquitous Acrobat Reader program that allows attackers to remotely install malware without requiring unsuspecting users to do anything more than browse to the wrong website.
Real-world attacks targeting the vulnerability, which affects all versions of Reader, have been circulating for the past three weeks. The update is for Windows and Mac users only. Those running Reader on Linux will have to wait another one to two weeks before their patches are available. That seems like a long time to wait.
People who don't want Google toolbar foisted upon them are reminded to unclick the "install Google toolbar" checkbox, which can be easy to miss.
To be fair, those attacks are narrowly tailored and require victims to actually open a booby-trapped file. But researcher Didier Stevens has created a proof-of-concept attack that uses the Reader vulnerability to take control of a PC without requiring a user to double-click on anything.
The Reader vulnerability is only the latest security peril to be unleashed on the masses by software from Adobe. Two weeks ago, the company pushed out out a fix for critical vulnerabilities in its Flash player. According to researchers at Secunia, "at least one of them is quite nasty and does indeed allow remote code execution in a very reliable manner."
Like a lot of Reg readers, your reporter is the de facto system administrator for a lot of friends and family members. More than a week after Adobe released the Flash update, none of the 10 PCs in his care had automatically received it. That meant the patch had to be installed manually on each machine.
What's more, computers using more than one browser would appear to need two updates - one for Internet Explorer and another for Firefox. For an update so important, Adobe is certainly making us work awfully hard to install it, no?
Until Adobe makes the process more user-friendly, the best thing to do is to manually check each machine you care about using this link for Flash. We couldn't find a similar link for Reader, so the easiest way to make sure you're current is to open it and choose "check for updates" in the Help menu.
Better yet, use Secunia's Personal Sofware Inspector to stay on top of critical updates for hundreds of third-party applications. We also welcome feedback from Adobe on ways people can lessen the updating pain.
However you update your Adobe software, make sure that you do. The PC you save, may be your own. ®
This article was updated after Adobe released its patch. It was also corrected to reflect that the patch covers Mac versions of Reader, in addition to Windows versions.