How to Fix Samsung Exynos 4 Vulnerability Exploit

Published on December 20th, 2012

Just recently, it was discovered that there was a major vulnerability in smartphones and tablets that are powered by a Samsung Exynos 4 SoC processor. Specifically, the Exynos 4210 and the newer Exynos 4412 mobile processors. This is a serious security flaw, even if your phone is not rooted. Why? because the flaw is in the kernel and it can give any app root access/permission without you even knowing it.

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samsung exynos 4 soc security flaw

The Dangers of Samsung Exynos 4 SoC Security Flaw

If you are new to this kind of stuff then you should be very afraid, specially if your phone contains confidential and sensitive information. Apps can actually gain access to sensitive information, then send it to somebody or do some really nasty stuff on your device without you even knowing it.

Be very careful specially if you are downloading APK apps/games that are outside the Google Play Store. Since most of the APK files, specially the unofficial and cracked versions that are outside of Google Play are already modified, you can’t really be sure if the APK files contains malwares, trojans and unwanted malicious scripts. You can’t be too sure either with apps downloaded from Google Play Store itself.

Samsung Exynos 4 Exploit Affected Devices

Like I previously mentioned above, all devices that are running on Exynos 4210 and 4412. Below are some of the devices that are affected by this exploit:

  • Samsung Galaxy Note GT-N7000
  • Samsung Galaxy S2 GT-I9100
  • AT&T Samsung Galaxy S2 GT-I777
  • Samsung Galaxy S3 GT-I9300
  • Samsung Galaxy S3 LTE GT-I9305
  • Samsung Galaxy Note 2 GT-N7100
  • Samsung Galaxy Note 2 LTE GT-N7105
  • AT&T Galaxy Note 2 SGH-I317
  • Verizon Galaxy Note 2 SCH-I605
  • Samsung Galaxy Note 10.1 GT-N8000
  • Samsung Galaxy Note 10.1 GT-N8010
  • Samsung Galaxy Camera EK-GC100
  • Samsung Galaxy Tab Plus GT-P6210
  • And more…

According to Samsung, they are aware of the security issue and is planning to provide a software update as soon as possible to fix this exploit.

How To Fix Samsung Exynos 4 Security Flaw Temporarily

Meanwhile, while waiting for the official fix for this exploit, there is a temporary solution posted by an XDA forum member Chainfire. The solution is called ExynosAbuse app. The ExynosAbuse app is a free app that provides temporary solution to the said exploit. It’s not a total and complete solution but at least you have your first line of defense.

Where to Download ExynosAbuse App

You can download the ExynosAbuse app from Chainfire’s main thread here.

Please do carefully read the instructions and the warnings because the temporary fix has also a catch. Like I said, it’s not an official and total solution.

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