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Date: Thu, 2 Apr 2009 16:54:01 +0200
From: Tomas Hoger <>
Subject: Re: CVE request -- zsh, XFree86-xfs/xorg-x11-xfs,

On Tue, 31 Mar 2009 21:12:25 -0400 (EDT) "Steven M. Christey"
<> wrote:

> > 3, screen: Unsafe usage of temporary file
> >    References:
> >
> >
> >

Based on the additional comments in the upstream bug:

> CVE-2009-1214 - world-readable permissions

This should be expected and intended behavior.

> CVE-2009-1215 - symlink following

There should be no real symlink issue for /tmp/screen-exchange in the
upstream version.  Debian screen version seems to have a patch, that
introduces a symlink flaw, but it does not depend on any race
condition.  Description for this one may need to be updated.

Tomas Hoger / Red Hat Security Response Team

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