Re: ptrace secfix does NOT work... :(

[Daniel Jacobowitz]

On Sat, May 10, 2003 at 03:52:49PM -0500, Adam Majer wrote:
> On Fri, May 09, 2003 at 12:05:52AM +0200, Bernhard Kaindl wrote:
> > Hello,
> > 
> > The attached patch cleans up the too restrictive checks which were
> > included in the original ptrace/kmod secfix posted by Alan Cox
> > and applies on top of a clean 2.4.20-rc1 source tree.
> 
> But the ptrace hole is _NOT_ fixed... :(

This is the exploit which makes itself suid.  Did you leave it suid
before retesting it?

> adamm@polaris:~/test$ uname -r
> 2.4.21-rc2
> \u@\h:\w\$ ls -ltr hehe
> -rw-------    1 root     root           17 May 10 15:44 hehe
> \u@\h:\w\$ whoami
> root
> \u@\h:\w\$ cat hehe
> I can see you!!
>                                                                                                               
> \u@\h:\w\$ rm hehh
> \u@\h:\w\$ ls -ltr hehe
> ls: hehe: No such file or directory

Huh?

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer