We nor the developers are responsible for any damages caused. Rooting is a possibly dangerous procedure, so do it at your own risk.
Chainfire, the man who has brought us so much already, has created his CF-Root package for the international Galaxy SIII I9300. It’s a simple package for those who want to stay on the stock ROM for now. Its simplicity is its greatest achievement. It enables root, installs the SuperSU app for managing root access, ClockWorkMod recovery for flashing new things down the line, and an app called CWM Manager that lets you control ClockWorkMod recovery from an app in Android (ROM Manager really doesn’t like Samsung phones, do not use it).
Unlike many other phones’ CF-Root packages, this one contains a stock kernel. It will be lacking a few features like boot scripts and custom boot animations. However, this is a great option for people (like me, until a new version of Android is released) who like to stay on stock software but add the flair of root and mod a few things themselves. And whenever you feel the need to, you can flash a new ROM through CWM!
Here’s a description from Chainfire:
CF-Root is the root for “rooting beginners” and those who want to keep as close to stock as possible. CF-Root is meant to be used in combination with stock Samsung firmwares, and be the quickest and easiest way for your first root.
– Root: SuperSU
– Recovery: ClockWorkMod
– Util: CWM Manager
Unlike CF-Root for some other devices, this iteration of CF-Root does not include a custom kernel. Your kernel remains the stock kernel, and thus goodies like insecure adbd (ro.secure=0), custom boot scripts, and custom boot animations are not supported.
Root – SuperSU
The root permission management app installed by CF-Root is SuperSU. This will allow your apps to gain root (superuser) access.
Recovery – ClockWorkMod (CWM)
A custom CWM 5.5 build is included in CF-Root, taken from this thread. This provides for the ability to install custom ROMs, and do nandroid (full device) backups and restores.
Util – CWM Manager
My management application for CWM is also installed, see the recovery thread linked above for further details. It allows you to command CWM (install a ROM, make/restore backups, etc) from normally booted Android.
Hit the source link for installation instructions, and ignore the “beginners” tag associated with it.