Newly-Discovered Java 7 Security Vulnerability Poses Risks to Macs

Java Web 165Just two weeks after Oracle officially took over responsibility for Java on OS X with the launch of Java SE 7 Update 6, a new Java vulnerability has been discovered to pose a significant threat to systems running the software. Krebs on Security highlighted the issue yesterday, noting that it affects all versions of Java 7 on most browsers.

News of the vulnerability (CVE-2012-4681) surfaced late last week in a somewhat sparse blog post by FireEye, which said the exploit seemed to work against the latest version of Java 7, which is version 1.7, Update 6. This morning, researchers Andre’ M. DiMino & Mila Parkour published additional details on the targeted attacks seen so far, confirming that the zero-day affects Java 7 Update 0 through 6, but does not appear to impact Java 6 and below.

Initial reports indicated that the exploit code worked against all versions of Internet Explorer, Firefox and Opera, but did not work against Google Chrome. But according to Rapid 7, there is a Metasploit module in development that successfully deploys this exploit against Chrome (on at least Windows XP).

The report notes that Oracle is moving to a quarterly update cycle for Java, meaning that the next regularly-scheduled update to Java SE 7 is not planned until October, but it is unclear how quickly the company will move to address the issue. In the interim, some security experts are developing an unofficial patch while users are advised to simply disable Java if they do not need it active on their systems.

Computerworld reports that the issue does indeed affect fully-updated Macs running Java 7 on top of OS X Mountain Lion.

David Maynor, CTO of Errata Security, confirmed that the Metasploit exploit -- which was published less than 24 hours after the bug was found -- is effective against Java 7 installed on OS X Mountain Lion.

"This exploit works on OS X if you are running the 1.7 JRE [Java Runtime Environment]," said Maynor in an update to an earlier blog post.

JRE 1.7 includes the most-current version of Java 7, dubbed "Update 6," that was released earlier this month.

Both Safari 6 and Firefox 14 have been found to be vulnerable to the issue on OS X systems.

Apple has of course had its own issues with Java vulnerabilities, most recently with the Flashback malware that was able to infect over 600,000 Macs by taking advantage of an exploit in Java 6 that had already been patched by Oracle for most platforms but not by Apple for OS X. It is due to smaller, previous incidents similar to Flashback that Apple had already been moving to shift responsibility for Java updates to Oracle, a move that is taking place with Java 7. But while Mac users will now receive Java updates simultaneously with users on other platforms, Java remains one of the highest-profile targets for attackers seeking to compromise systems on a broad basis.

Update: CNET noted earlier today that most Mac users are not currently susceptible to the issue, as Java 7 is not installed by default on Macs. The current version of Java installed on Mac remains Java 6 for the time being, so users would have to have manually updated to Java 7 in order for their systems to be vulnerable.

Top Rated Comments

Prodo123 Avatar
152 months ago
Just to emphasize, this is NOT a Mac security issue but rather a JAVA security issue which affects its host system, which includes Macs.

Nor is this a Windows virus. Macs are still impervious to Windows viruses.
Score: 16 Votes (Like | Disagree)
dashiel Avatar
152 months ago
It’s infuriating that Adobe’s CS requires Java now otherwise I could ditch Java. Rubbing salt in the wounds I believe the Java requirement is for their software authentication/auto update mechanism and is not required for core functionality.
Score: 10 Votes (Like | Disagree)
neiltc13 Avatar
152 months ago
Cue "Java sucks, why does anyone even need Java" comments...
Score: 7 Votes (Like | Disagree)
Slix Avatar
152 months ago
Another reason I've had Java disabled on my Safari for years.
Score: 6 Votes (Like | Disagree)
BC2009 Avatar
152 months ago
Open Terminal..

Run: java -version

I get:

Java(TM) SE Runtime Environment (build 1.6.0_33-b03-424-11M3720)
Java HotSpot(TM) 64-Bit Server VM (build 20.8-b03-424, mixed mode)

So it looks like I am good. "build 1.6" is "Java 6". I have Mountain Lion and just recently installed Java after upgrading to Mountain Lion, so I was a bit surprised that I had Java 6 and not Java 7.
Score: 5 Votes (Like | Disagree)
r.harris1 Avatar
152 months ago
Of course it is useful - if it's crap, you don't need it activated, unless you play a handful of Java games or are required by a few legacy websites to use it. Understand now?

There is nothing inflammatory in speaking the truth. Client-side Java is crap, virtually useless and a threat to your computer's security. If you don't like it, feel free to avoid such threads. I just can't stand LIES when people come here and say Java is "so important" and essential to an end user's experience.

Golly. Now I understand! Your eloquence and command of argument and language has convinced me. From now on, I'm sure those of us with Java experience infesting these Java threads will be sure to leave it to you to lead the way. :rolleyes:
Score: 4 Votes (Like | Disagree)

Popular Stories

Delta Feature

Delta Game Emulator Now Available From App Store on iPhone

Wednesday April 17, 2024 9:58 am PDT by
Game emulator apps have come and gone since Apple announced App Store support for them on April 5, but now popular game emulator Delta from developer Riley Testut is available for download. Testut is known as the developer behind GBA4iOS, an open-source emulator that was available for a brief time more than a decade ago. GBA4iOS led to Delta, an emulator that has been available outside of...
iPhone 15 Pro Action Button Translate

All iPhone 16 Models to Feature Action Button, But Usefulness Debated

Tuesday April 16, 2024 6:54 am PDT by
Last September, Apple's iPhone 15 Pro models debuted with a new customizable Action button, offering faster access to a handful of functions, as well as the ability to assign Shortcuts. Apple is poised to include the feature on all upcoming iPhone 16 models, so we asked iPhone 15 Pro users what their experience has been with the additional button so far. The Action button replaces the switch ...
Provenance Emulator

PlayStation, GameCube, Wii, and SEGA Emulator for iPhone and Apple TV Coming to App Store

Friday April 19, 2024 8:29 am PDT by
The lead developer of the multi-emulator app Provenance has told iMore that his team is working towards releasing the app on the App Store, but he did not provide a timeframe. Provenance is a frontend for many existing emulators, and it would allow iPhone and Apple TV users to emulate games released for a wide variety of classic game consoles, including the original PlayStation, GameCube, Wii,...
maxresdefault

Hands-On With the New App Store Delta Game Emulator

Wednesday April 17, 2024 12:19 pm PDT by
A decade ago, developer Riley Testut released the GBA4iOS emulator for iOS, and since it was against the rules at the time, Apple put a stop to downloads. Emulators have been a violation of the App Store rules for years, but that changed on April 5 when Apple suddenly reversed course and said that it was allowing retro game emulators on the App Store. Subscribe to the MacRumors YouTube channel ...
iOS NES Emulator Bimmy Feature

NES Emulator for iPhone and iPad Now Available on App Store [Removed]

Tuesday April 16, 2024 11:33 am PDT by
The first approved Nintendo Entertainment System (NES) emulator for the iPhone and iPad was made available on the App Store today following Apple's rule change. The emulator is called Bimmy, and it was developed by Tom Salvo. On the App Store, Bimmy is described as a tool for testing and playing public domain/"homebrew" games created for the NES, but the app allows you to load ROMs for any...