bugtraq - Re: [ GLSA 200611-03 ] NVIDIA binary graphics driver: Privilege escalation vulnerability

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Date: Tue, 14 Nov 2006 11:16:41 +0000
From: Glynn Clements <glynn@...ements.plus.com>
To: "Nick Boyce" <nick.boyce@...il.com>
Cc: bugtraq@...urityfocus.com, full-disclosure@...ts.grok.org.uk,
	security-alerts@...uxsecurity.com
Subject: Re: [ GLSA 200611-03 ] NVIDIA binary graphics driver: Privilege escalation vulnerability


Nick Boyce wrote:

> On 11/7/06, Raphael Marichez <falco@...too.org> wrote:
> 
> > - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> > Gentoo Linux Security Advisory                           GLSA 200611-03
> > - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> >                                             http://security.gentoo.org/
> > - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> >
> >   Severity: High
> >      Title: NVIDIA binary graphics driver: Privilege escalation
> >             vulnerability
> >       Date: November 07, 2006
> >       Bugs: #151635
> >         ID: 200611-03
> >
> > - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> >
> > Synopsis
> > ========
> >
> > The NVIDIA binary graphics driver is vulnerable to a local privilege
> > escalation
> [snip]
> 
> > An X client could trigger the buffer overflow with a maliciously
> > crafted series of glyphs. A remote attacker could also entice a user to
> > open a specially crafted web page, document or X client that will
> > trigger the buffer overflow.
> 
> um ... doesn't that make it a *remote* privilege escalation ?

Well, any file parsing bug could be considered a "remote"
vulnerability if you consider the prospect of downloading a malicious
file from the internet.

I don't think that remote X clients are an issue; the last time I
checked, the driver in question was only used for direct rendering,
which requires a local X client, while indirect rendering uses the
built-in software renderer.

-- 
Glynn Clements <glynn@...ements.plus.com>