Timeline :

Vulnerability discovered by zx2c4 (Jason A. Donenfeld)
Public release of the vulnerability the 2012-01-18
Exploit provided the 2012-01-23

PoC provided by :

zx2c4 (Jason A. Donenfeld)

Reference(s) :

CVE-2012-0056
EBD-ID-18411

Affected version(s) :

Linux kernel’s above or equal to 2.6.39 (32 bit or 64 bit).

Tested on Ubuntu 11.10 with :

Linux ubuntu 3.0.0-15-generic

Description :

Mempodipper is an exploit for CVE-2012-0056 exploiting an issue in the handling of the /proc/pid/mem writing functionality, where permissions are not being properly checked in the Linux kernel version 2.6.39 to current. A local, unprivileged user could use this flaw to escalate their privileges.

Commands :

whoami
gcc -o CVE-2012-0056-Mempodipper CVE-2012-0056-Mempodipper.c
./CVE-2012-0056-Mempodipper
whoami