Re: [RHSA-2000:039-02] remote root exploit (SITE EXEC) fixed (fwd)

[hoshem () MEL COMCEN COM AU (Helmethead)]

On Thu, Jun 29, 2000 at 10:23:12AM +0000, Joey Maier wrote:
> > RHSA-2000:039-02: remote root exploit (SITE EXEC) fixed
> [...]
> > A security bug in wu-ftpd can permit remote users, even without
> > an account, to gain root access.
> > The new version closes the hole.
> >
> > 2. Relevant releases/architectures:
> >
> > Red Hat Linux 5.2 - i386 alpha sparc
>
>       (which includes wu-ftpd-2.4.2b18-2.i386.rpm)
>
> > Red Hat Linux 6.2 - i386 alpha sparc
>
>       (which includes wu-ftpd-2.6.0-3.i386.rpm)
>
> What about Red Hat 6.0 (includes wu-ftpd-2.4.2vr17-3.i386.rpm) and
> 6.1 (includes wu-ftpd-2.5.0-9.i386.rpm)? I know that the sploit tf8
> released was for version 2.6.0, but earlier versions of wu-ftpd
> are vunerable, too.  Does anyone know if Red Hat plans to release
> RPMs to fix the 2.5.0 version included in Red Hat 6.1?
>
> --
>       "When you understand UNIX, you will understand the world.
>        When you understand NT....you will understand NT" - R. Thieme
> http://www.slothnet.com

No need, redhat 6.1's wu-ftpd 2.5.0 uses it's stripped down internal *printf instead of the library one, and wu-ftpd's 
internal printf does not recognise the %n formatting directive crucial to this exploit. It isn't vulnerable.