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                   VMware Security Advisory

Advisory ID:       VMSA-2006-0001
Synopsis:          VMware ESX Server Cross Site Scripting issue
      VMware ESX 2.5.2 prior to upgrade patch 2
      VMware ESX 2.1.2 prior to upgrade patch 6
      VMware ESX 2.0.1 prior to upgrade patch 6
      NOT VULNERABLE: VMware ESX 2.5.3 and later
Advisory URL:      http://www.vmware.com/support/kb/enduser/std_adp.php?p_faqid=2001
Issue date:        2006-05-24
Updated on:        2006-05-24
CVE Name:          CVE-2005-3619 
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1. Summary:

A Cross Site Scripting issue affects VMware ESX Server. 

VMware has rated the severity of this issue a Priority 1 issue.

2. Relevant release:

VMware ESX 2.5.2 prior to upgrade patch 2
VMware ESX 2.1.2 prior to upgrade patch 6
VMware ESX 2.0.1 prior to upgrade patch 6
NOT VULNERABLE: VMware ESX 2.5.3 and later

3. Problem description:

VMware ESX Server provides a web application to perform management 
of the system.  One of the functions of this application is to allow 
administrative users to view log files, through a browser.  

In vulnerable releases, no encoding of syslog data is performed to 
ensure that meta-characters are not interpreted by the browser.  
An attacker could potentially inject content into the syslog file 
where it could be rendered when viewed through the Management Interface.  

The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2005-3619 to this issue.  

4. Solution:

Upgrade to the lastest packages: http://www.vmware.com/download/esx/

As of this writing
2.5.3 is the latest release for the 2.5.x branch.  

2.5.2 patch 4 also fixes this issue.  2.1.2 patch 6 is the latest 
release and 2.0.1 patch 6 addresses this issue.

Installing the Update

This update requires you to boot your server into Linux mode to perform 
the upgrade. When you are prompted to reboot at the end of the upgrade, 
the installer will restart your system to run ESX Server.

   1. Power off all virtual machines and shutdown your server.
   2. Restart your system.
   3. At the LILO Boot Menu, select the linux option. Allow the system 
      start procedure to complete.
   4. Log in as root into the ESX Server service console, in Linux mode. 
      Make sure your path variable contains /usr/bin:/bin.
   5. Download the tar file into a temporary directory under /root on 
      your ESX service console.
   6. Change directories to that temporary directory.
   7. Verify the integrity of the package for your version:
      # md5sum esx-*-upgrade.tar.gz

      The md5 checksum output should match one of the following:
  90900eb0a824ce9b9a427c77383eae72 esx-2.5.2-21059-upgrade.tar.gz
  93961d5e9a5e609502ef84082f94c4d1 esx-2.1.2-18670-upgrade.tar.gz
  5830bb96fedfecb7f4d95b484c1bfa3a esx-2.0.1-18595-upgrade.tar.gz

   8. Extract the compressed tar archive:
      # tar -xvzf esx-2.0.1-18595-upgrade.tar.gz
   9. Change directories to the newly created directory 
      # cd esx-2.0.1-18595-upgrade
  10. Run the patch installer:
      # /usr/bin/perl ./upgrade.pl

      Note: Once you start the installation script, do not enter keyboard 
            escape commands such as Control-C or Control-D. Using escape 
            commands will interrupt the upgrade procedure and leave your 
            system partially upgraded.

  11. The system updates have now been installed. A reboot prompt displays:
      Reboot the server now [y/n]?

      This update will not be complete until you reboot the ESX Server. If 
      you enter N, to indicate that you will not reboot at this time, ESX 
      Server displays the warning message: 

      "Please reboot the server manually for this update to take effect. 
       Update has been terminated unexpectedly." 

      If you see this message, you must manually reboot the server to complete 
      the driver update.

  12. At the reboot prompt, enter Y to reboot the server.

7. References:

http://www.corsaire.com/
http://www.corsaire.com/advisories/c051114-002.txt
http://www.vmware.com/products/esx/
http://www.aspectsecurity.com/topten/xss.html

8. Acknowledgments

VMware would like to thank Stephen de Vries and the security
consultancy Corsaire Limited, <http://www.corsaire.com/>.

9. Contact:

http://www.vmware.com/security

Copyright 2006 VMware Inc. All rights reserved.
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