oss-sec: Re: CVE request: oping allows the disclosure of arbitrary file contents

[Tomas Hoger <thoger () redhat com>]

On Mon, 16 Nov 2009 17:39:30 -0500 (EST) Josh Bressers wrote:

> > Does the RLIMIT_NPROC trick work against oping, or any setuid app
> > that calls setuid(getuid())?
> This should work for everything that calls setuid()
>
> I have a little bit about this here:
> http://www.bress.net/blog/archives/34-setuid-madness.html
My previous web search did find that one.  Though set_user() doing
NPROC check is only called when new uid differs from current real uid
(so not called in setuid(getuid()) case).

-- 
Tomas Hoger / Red Hat Security Response Team