Urgent Help...Pseudo-Device provides a Backdoor Entry to root.


 
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# 1  
Old 11-29-2009
MySQL Urgent Help...Pseudo-Device provides a Backdoor Entry to root.

Can Anybody help to create a pseudo-device and write a device driver for it. The pseudo-device provides a “backdoor” for gaining root access for a particular user. Instead of compiling the device driver into the kernel. Modules are object binaries that can be dynamically loaded into the kernel.
This pseudo-device gives root privileges to the task whose pid is written to the device. When the module is installed, the uid of the user who are allowed to use this device can be passed as module parameters. Any other user, including root, that tries to use this device will get an “access denied” error. When the correct user accesses the device for executing operations, the device driver finds the task associated with the pid and grants that task root privileges.
Requesting help from Amazing Programmers in this forumSmilie

Last edited by pludi; 11-29-2009 at 06:00 AM.. Reason: removed email
# 2  
Old 11-29-2009
This is either related to cracking/hacking or homework, because what you've described can be easily done with sudo or a well-written suid-root program. Closing thread until you can tell us what this is about.
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