Security Update: [CSSA-2002-009.0] Linux: X server allows access to any shared memory on the system

From: securityat_private
Date: Fri Mar 29 2002 - 11:35:56 PST
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______________________________________________________________________________
		   Caldera International, Inc.  Security Advisory

Subject:		Linux: X server allows access to any shared memory on the system
Advisory number: 	CSSA-2002-009.0
Issue date: 		2002, March 15
Cross reference:
______________________________________________________________________________


1. Problem Description

   Any user with local X access can exploit the MIT-SHM extension and
   gain read/write access to any shared memory segment on the system.


2. Vulnerable Supported Versions

   System                       Package
   -----------------------------------------------------------
   OpenLinux Server 3.1          All packages previous to
                                 XFree86-4.1-12   

   OpenLinux Workstation 3.1     All packages previous to
                                 XFree86-4.1-12                

   OpenLinux Server 3.1.1        All packages previous to      
                                 XFree86-4.1-12                
   
   OpenLinux Workstation         All packages previous to      
   3.1.1                         XFree86-4.1-12                


3. Solution

   Workaround

     none

   The proper solution is to upgrade to the latest packages.


4. OpenLinux 3.1 Server

    4.1 Location of Fixed Packages

         The 3.1 version of this package is not yet available. An updated
         advisory will be published when the package is released.
 

5. OpenLinux 3.1 Workstation

    5.1 Location of Fixed Packages

         The 3.1 version of this package is not yet available. An updated
         advisory will be published when the package is released.
 

6. OpenLinux 3.1.1 Server

    6.1 Location of Fixed Packages

       The upgrade packages can be found on Caldera's FTP site at:

       ftp://ftp.caldera.com/pub/updates/OpenLinux/3.1.1/Server/current/RPMS

       The corresponding source code package can be found at:

       ftp://ftp.caldera.com/pub/updates/OpenLinux/3.1.1/Server/current/SRPMS

   6.2 Verification

       245e9b3977dfe7da3bf41d8ed39506ed  RPMS/XFree86-4.1-12.i386.rpm
       82e5fdfacc34d5fb8476fcfb207e7cb9  RPMS/XFree86-addons-4.1-12.i386.rpm
       9300a24ef34750c2490a7d48a5d55192  RPMS/XFree86-config-eg-4.1-12.i386.rpm
       2b3a6305777826110a4a4ee38cbf1a93  RPMS/XFree86-contrib-4.1-12.i386.rpm
       55aec647ce3e60603dce696e71eb26e5  RPMS/XFree86-devel-4.1-12.i386.rpm
       115850eaa7b5c2c6b0c3d7d36ba7c6c5  RPMS/XFree86-devel-prof-4.1-12.i386.rpm
       9f3dd76757cc99c07a71991d43e441cb  RPMS/XFree86-devel-static-4.1-12.i386.rpm
       7cf04cf1e8fb1153e147a44f178364e8  RPMS/XFree86-fonts-100dpi-4.1-12.i386.rpm
       d700a04c2a6538b51e39991c7139a084  RPMS/XFree86-fonts-4.1-12.i386.rpm
       47c28aa528c71b6b31b6f472ff50227c  RPMS/XFree86-fonts-75dpi-4.1-12.i386.rpm
       0e6c20f23c614bad51f4a2ca6b7da3e2  RPMS/XFree86-fonts-cyrillic-4.1-12.i386.rpm
       b019f420aef281c0833416f04f97b3b7  RPMS/XFree86-fonts-extra-4.1-12.i386.rpm
       2009bddd2d2ee6e9ac1f8d7090246072  RPMS/XFree86-fonts-scale-4.1-12.i386.rpm
       e9f91121b38e58c969e59437745769a9  RPMS/XFree86-fonts-speedo-4.1-12.i386.rpm
       ac38a32f8bb2890bb9e1aa0c594b7b9d  RPMS/XFree86-fontserver-4.1-12.i386.rpm
       b196ba2ec8a7e859fb689fdb2edb7d01  RPMS/XFree86-imake-4.1-12.i386.rpm
       7802f9a34ee22968160cbe4a2503b9ce  RPMS/XFree86-libs-4.1-12.i386.rpm
       be74a2637bac45a6912e260c93fd0daf  RPMS/XFree86-misc-4.1-12.i386.rpm
       6667de4aa89daba3f618fcc53235a67d  RPMS/XFree86-pex-4.1-12.i386.rpm
       2bfc213d3687b5cf0dea521822591852  RPMS/XFree86-programs-4.1-12.i386.rpm
       1faca0a3c38c3c6fc722bfc644966cce  RPMS/XFree86-server-4.1-12.i386.rpm
       a9d7ef19a58694b03fc8d7036c384009  RPMS/XFree86-setup-4.1-12.i386.rpm
       8dc6abdce7c50178dce3b2a5844a30f5  RPMS/XFree86-twm-4.1-12.i386.rpm
       0c1f8ab1194ca2bfda265dfc5d44dd2f  RPMS/XFree86-xdm-4.1-12.i386.rpm
       89a864b1377fff1fbdf5c22056c3595b  RPMS/XFree86-Xnest-4.1-12.i386.rpm
       ac4d725b2a37c96e044fb85b8c74c5b1  RPMS/XFree86-Xprt-4.1-12.i386.rpm
       9863ad9eedcc542e4cb93922fe49b153  RPMS/XFree86-xsm-4.1-12.i386.rpm
       7fdedf2eb43f97e6739b7fa10d374c89  RPMS/XFree86-xterm-4.1-12.i386.rpm
       54d6096638b59151956896bcbdef3940  RPMS/XFree86-Xvfb-4.1-12.i386.rpm
       c23136cc0151d025e699f9a1fe68d2ad  SRPMS/XFree86-4.1-12.src.rpm
       

   6.3 Installing Fixed Packages

       Upgrade the affected packages with the following commands:

         rpm -Fvh XFree86-4.1-12.i386.rpm \
              XFree86-addons-4.1-12.i386.rpm \
              XFree86-config-eg-4.1-12.i386.rpm \
              XFree86-contrib-4.1-12.i386.rpm \
              XFree86-devel-4.1-12.i386.rpm \
              XFree86-devel-prof-4.1-12.i386.rpm \
              XFree86-devel-static-4.1-12.i386.rpm \
              XFree86-fonts-100dpi-4.1-12.i386.rpm \
              XFree86-fonts-4.1-12.i386.rpm \
              XFree86-fonts-75dpi-4.1-12.i386.rpm \
              XFree86-fonts-cyrillic-4.1-12.i386.rpm \
              XFree86-fonts-extra-4.1-12.i386.rpm \
              XFree86-fonts-scale-4.1-12.i386.rpm \
              XFree86-fonts-speedo-4.1-12.i386.rpm \
              XFree86-fontserver-4.1-12.i386.rpm \
              XFree86-imake-4.1-12.i386.rpm \
              XFree86-libs-4.1-12.i386.rpm \
              XFree86-misc-4.1-12.i386.rpm \
              XFree86-pex-4.1-12.i386.rpm \
              XFree86-programs-4.1-12.i386.rpm \
              XFree86-server-4.1-12.i386.rpm \
              XFree86-setup-4.1-12.i386.rpm \
              XFree86-twm-4.1-12.i386.rpm \
              XFree86-xdm-4.1-12.i386.rpm \
              XFree86-Xnest-4.1-12.i386.rpm \
              XFree86-Xprt-4.1-12.i386.rpm \
              XFree86-xsm-4.1-12.i386.rpm \
              XFree86-xterm-4.1-12.i386.rpm \
              XFree86-Xvfb-4.1-12.i386.rpm
         

7. OpenLinux 3.1.1 Workstation

    7.1 Location of Fixed Packages

       The upgrade packages can be found on Caldera's FTP site at:

       ftp://ftp.caldera.com/pub/updates/OpenLinux/3.1.1/Workstation/current/RPMS

       The corresponding source code package can be found at:

       ftp://ftp.caldera.com/pub/updates/OpenLinux/3.1.1/Workstation/current/SRPMS

   7.2 Verification

       245e9b3977dfe7da3bf41d8ed39506ed  RPMS/XFree86-4.1-12.i386.rpm
       82e5fdfacc34d5fb8476fcfb207e7cb9  RPMS/XFree86-addons-4.1-12.i386.rpm
       9300a24ef34750c2490a7d48a5d55192  RPMS/XFree86-config-eg-4.1-12.i386.rpm
       2b3a6305777826110a4a4ee38cbf1a93  RPMS/XFree86-contrib-4.1-12.i386.rpm
       55aec647ce3e60603dce696e71eb26e5  RPMS/XFree86-devel-4.1-12.i386.rpm
       115850eaa7b5c2c6b0c3d7d36ba7c6c5  RPMS/XFree86-devel-prof-4.1-12.i386.rpm
       9f3dd76757cc99c07a71991d43e441cb  RPMS/XFree86-devel-static-4.1-12.i386.rpm
       7cf04cf1e8fb1153e147a44f178364e8  RPMS/XFree86-fonts-100dpi-4.1-12.i386.rpm
       d700a04c2a6538b51e39991c7139a084  RPMS/XFree86-fonts-4.1-12.i386.rpm
       47c28aa528c71b6b31b6f472ff50227c  RPMS/XFree86-fonts-75dpi-4.1-12.i386.rpm
       0e6c20f23c614bad51f4a2ca6b7da3e2  RPMS/XFree86-fonts-cyrillic-4.1-12.i386.rpm
       b019f420aef281c0833416f04f97b3b7  RPMS/XFree86-fonts-extra-4.1-12.i386.rpm
       2009bddd2d2ee6e9ac1f8d7090246072  RPMS/XFree86-fonts-scale-4.1-12.i386.rpm
       e9f91121b38e58c969e59437745769a9  RPMS/XFree86-fonts-speedo-4.1-12.i386.rpm
       ac38a32f8bb2890bb9e1aa0c594b7b9d  RPMS/XFree86-fontserver-4.1-12.i386.rpm
       b196ba2ec8a7e859fb689fdb2edb7d01  RPMS/XFree86-imake-4.1-12.i386.rpm
       7802f9a34ee22968160cbe4a2503b9ce  RPMS/XFree86-libs-4.1-12.i386.rpm
       be74a2637bac45a6912e260c93fd0daf  RPMS/XFree86-misc-4.1-12.i386.rpm
       6667de4aa89daba3f618fcc53235a67d  RPMS/XFree86-pex-4.1-12.i386.rpm
       2bfc213d3687b5cf0dea521822591852  RPMS/XFree86-programs-4.1-12.i386.rpm
       1faca0a3c38c3c6fc722bfc644966cce  RPMS/XFree86-server-4.1-12.i386.rpm
       a9d7ef19a58694b03fc8d7036c384009  RPMS/XFree86-setup-4.1-12.i386.rpm
       8dc6abdce7c50178dce3b2a5844a30f5  RPMS/XFree86-twm-4.1-12.i386.rpm
       0c1f8ab1194ca2bfda265dfc5d44dd2f  RPMS/XFree86-xdm-4.1-12.i386.rpm
       89a864b1377fff1fbdf5c22056c3595b  RPMS/XFree86-Xnest-4.1-12.i386.rpm
       ac4d725b2a37c96e044fb85b8c74c5b1  RPMS/XFree86-Xprt-4.1-12.i386.rpm
       9863ad9eedcc542e4cb93922fe49b153  RPMS/XFree86-xsm-4.1-12.i386.rpm
       7fdedf2eb43f97e6739b7fa10d374c89  RPMS/XFree86-xterm-4.1-12.i386.rpm
       54d6096638b59151956896bcbdef3940  RPMS/XFree86-Xvfb-4.1-12.i386.rpm
       c23136cc0151d025e699f9a1fe68d2ad  SRPMS/XFree86-4.1-12.src.rpm
       

   7.3 Installing Fixed Packages

       Upgrade the affected packages with the following commands:

         rpm -Fvh XFree86-4.1-12.i386.rpm \
              XFree86-addons-4.1-12.i386.rpm \
              XFree86-config-eg-4.1-12.i386.rpm \
              XFree86-contrib-4.1-12.i386.rpm \
              XFree86-devel-4.1-12.i386.rpm \
              XFree86-devel-prof-4.1-12.i386.rpm \
              XFree86-devel-static-4.1-12.i386.rpm \
              XFree86-fonts-100dpi-4.1-12.i386.rpm \
              XFree86-fonts-4.1-12.i386.rpm \
              XFree86-fonts-75dpi-4.1-12.i386.rpm \
              XFree86-fonts-cyrillic-4.1-12.i386.rpm \
              XFree86-fonts-extra-4.1-12.i386.rpm \
              XFree86-fonts-scale-4.1-12.i386.rpm \
              XFree86-fonts-speedo-4.1-12.i386.rpm \
              XFree86-fontserver-4.1-12.i386.rpm \
              XFree86-imake-4.1-12.i386.rpm \
              XFree86-libs-4.1-12.i386.rpm \
              XFree86-misc-4.1-12.i386.rpm \
              XFree86-pex-4.1-12.i386.rpm \
              XFree86-programs-4.1-12.i386.rpm \
              XFree86-server-4.1-12.i386.rpm \
              XFree86-setup-4.1-12.i386.rpm \
              XFree86-twm-4.1-12.i386.rpm \
              XFree86-xdm-4.1-12.i386.rpm \
              XFree86-Xnest-4.1-12.i386.rpm \
              XFree86-Xprt-4.1-12.i386.rpm \
              XFree86-xsm-4.1-12.i386.rpm \
              XFree86-xterm-4.1-12.i386.rpm \
              XFree86-Xvfb-4.1-12.i386.rpm
         


8. References

   Specific references for this advisory:

	none


   Caldera OpenLinux security resources:

	http://www.caldera.com/support/security/index.html

   Caldera UNIX security resources:

	http://stage.caldera.com/support/security/



   This security fix closes Caldera incidents sr860891, fz520231,
   erg711969.


9. Disclaimer

   Caldera International, Inc. is not responsible for the misuse of
   any of the information we provide on this website and/or through
   our security advisories.  Our advisories are a service to our
   customers intended to promote secure installation and use of
   Caldera International products.


10. Acknowledgements

   Roberto Zunino discovered and researched this vulnerability.
______________________________________________________________________________
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