local root exploit confirmed in 2.6.10: Linux 2.6 KernelCapability LSM Module Local Privilege Elevation

[Lee Revell]

Frank Barknecht pointed this out on linux-audio-dev, it's a horrible
bug, I confirmed it in 2.6.10, and have not seen it mentioned on the
list.

Executive summary:

run "vim" as normal user.  Do ":r /etc/shadow".  Permission denied.

do "modprobe capability" as root in another terminal

Do ":r /etc/shadow" again in the same vim.  You will be able to read and
write /etc/shadow as normal user.

http://www.derkeiler.com/Mailing-Lists/securityfocus/bugtraq/2004-12/0390.html

Lee

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