W.D.McKinney wrote:

Hi Guys,

I am running SuSE 5.1 of course and wondered what to do about this problem ? I am running Accelerated-X 4.1 with my Matrox Millenium.

The XFree86 team is working on a wrapper to cover this problem. At the moment they recommend to use XDM to launch the Xserver... Ciao BB

Thanks -Dee

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Various problems have been found in the X server which makes it a serious threat to system security. All versions of the X server, including Metro X and Accelerated X, are thought to be affected (only XFree86 and the MIT X reference implementation are *known* to be, however). This problem affects all Red Hat Linux platforms and versions.

Currently, no new X servers are available. Instead, Red Hat recommends removing the special permissions from the X server binary (the setuid bit), and using a wrapper program which is now on ftp.redhat.com. To do this, follow the following steps. The order is quite important, so please follow these instructions carefully.

1) Remove the setuid bit from all X servers installed on your system with the following command:

chmod u-s /usr/X11R6/bin/X*

2) Install the updated Xconfigurator package (details below)

3) Install the new xserver-wrapper package (details below)

4) If you are running Accelerated X, run the following command:

ln -sf /usr/X11R6/bin/Xaccel /etc/X11/X

if you are not running Accelerated X, do not do this step!

After these steps have been completed, X should functions as usual.

This information will appear on the Errata for Red Hat Linux 4.2 and Red Hat Linux 5.0 shortly.

Thanks to everyone on BUGTRAQ who brought these problems to our attention.

Red Hat 5.0 - -------------

i386: rpm -Uvh <A HREF="ftp://ftp.redhat.com/updates/5.0/i386/Xconfigurator-3.26-1.i386.rpm"><A HREF="ftp://ftp.redhat.com/updates/5.0/i386/Xconfigurator-3.26-1.i386.rpm</A">ftp://ftp.redhat.com/updates/5.0/i386/Xconfigurator-3.26-1.i386.rpm</A</A>> rpm -Uvh <A HREF="ftp://ftp.redhat.com/updates/5.0/i386/xserver-wrapper-1.1-1.i386.rpm"><A HREF="ftp://ftp.redhat.com/updates/5.0/i386/xserver-wrapper-1.1-1.i386.rpm</A">ftp://ftp.redhat.com/updates/5.0/i386/xserver-wrapper-1.1-1.i386.rpm</A</A>>

alpha: rpm -Uvh <A HREF="ftp://ftp.redhat.com/updates/5.0/alpha/Xconfigurator-3.26-1.alpha.rpm"><A HREF="ftp://ftp.redhat.com/updates/5.0/alpha/Xconfigurator-3.26-1.alpha.rpm</A">ftp://ftp.redhat.com/updates/5.0/alpha/Xconfigurator-3.26-1.alpha.rpm</A</A>> rpm -Uvh <A HREF="ftp://ftp.redhat.com/updates/5.0/alpha/xserver-wrapper-1.1-1.alpha.rpm"><A HREF="ftp://ftp.redhat.com/updates/5.0/alpha/xserver-wrapper-1.1-1.alpha.rpm</A">ftp://ftp.redhat.com/updates/5.0/alpha/xserver-wrapper-1.1-1.alpha.rpm</A</A>>

Red Hat 4.2 - -------------

i386: rpm -Uvh <A HREF="ftp://ftp.redhat.com/updates/4.2/i386/Xconfigurator-2.6.1-1.i386.rpm"><A HREF="ftp://ftp.redhat.com/updates/4.2/i386/Xconfigurator-2.6.1-1.i386.rpm</A">ftp://ftp.redhat.com/updates/4.2/i386/Xconfigurator-2.6.1-1.i386.rpm</A</A>> rpm -Uvh <A HREF="ftp://ftp.redhat.com/updates/4.2/i386/xserver-wrapper-1.1-0.i386.rpm"><A HREF="ftp://ftp.redhat.com/updates/4.2/i386/xserver-wrapper-1.1-0.i386.rpm</A">ftp://ftp.redhat.com/updates/4.2/i386/xserver-wrapper-1.1-0.i386.rpm</A</A>>

alpha: rpm -Uvh <A HREF="ftp://ftp.redhat.com/updates/4.2/alpha/Xconfigurator-2.6.1-1.alpha.rpm"><A HREF="ftp://ftp.redhat.com/updates/4.2/alpha/Xconfigurator-2.6.1-1.alpha.rpm</A">ftp://ftp.redhat.com/updates/4.2/alpha/Xconfigurator-2.6.1-1.alpha.rpm</A</A>> rpm -Uvh <A HREF="ftp://ftp.redhat.com/updates/4.2/alpha/xserver-wrapper-1.1-0.alpha.rpm"><A HREF="ftp://ftp.redhat.com/updates/4.2/alpha/xserver-wrapper-1.1-0.alpha.rpm</A">ftp://ftp.redhat.com/updates/4.2/alpha/xserver-wrapper-1.1-0.alpha.rpm</A</A>>

SPARC: rpm -Uvh <A HREF="ftp://ftp.redhat.com/updates/4.2/sparc/xserver-wrapper-1.1-0.sparc.rpm"><A HREF="ftp://ftp.redhat.com/updates/4.2/sparc/xserver-wrapper-1.1-0.sparc.rpm</A">ftp://ftp.redhat.com/updates/4.2/sparc/xserver-wrapper-1.1-0.sparc.rpm</A</A>>

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