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VMSA-2009-0008 ESX Service Console update for krb5

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                  VMware Security Advisory

Advisory ID:       VMSA-2009-0008
Synopsis:          ESX Service Console update for krb5
Issue date:        2009-06-30
Updated on:        2009-06-30 (initial release of advisory)
CVE numbers:       CVE-2009-0846
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1. Summary

  Service Console package krb5 has been updated to version

2. Relevant releases

  VMware ESX 3.5.0 without patch ESX350-200906407-SG

3. Problem Description

a. Service Console package krb5 update to version krb5-1.2.7-70

   Kerberos is a network authentication protocol. It is designed to
   provide strong authentication for client/server applications by
   using secret-key cryptography.

   An input validation flaw in the asn1_decode_generaltime function in
   MIT Kerberos 5 before 1.6.4 allows remote attackers to cause a
   denial of service or possibly execute arbitrary code via vectors
   involving an invalid DER encoding that triggers a free of an
   uninitialized pointer.

   A remote attacker could use this flaw to crash a network service
   using the MIT Kerberos library, such as kadmind or krb5kdc, by
   causing it to dereference or free an uninitialized pointer or,
   possibly, execute arbitrary code with the privileges of the user
   running the service.

   NOTE: ESX by default is unaffected by this issue, the daemons
   kadmind and krb5kdc are not installed in ESX.

   The Common Vulnerabilities and Exposures project (cve.mitre.org)
   has assigned the name CVE-2009-0846 to this issue.

   The following table lists what action remediates the vulnerability
   (column 4) if a solution is available.

   VMware         Product   Running  Replace with/
   Product        Version   on       Apply Patch
   =============  ========  =======  =================
   VirtualCenter  any       Windows  not affected

   hosted *       any       any      not affected

   ESXi           3.5       ESXi     not affected

   ESX            4.0       ESX      affected, patch pending
   ESX            3.5       ESX      ESX350-200906407-SG
   ESX            3.0.3     ESX      affected, patch pending
   ESX            3.0.2     ESX      affected, patch pending
   ESX            2.5.5     ESX      affected, patch pending

 * hosted products are VMware Workstation, Player, ACE, Server, Fusion.

4. Solution

  Please review the patch/release notes for your product and version
  and verify the md5sum of your downloaded file.

  ESX 3.5.0 ESX350-200906407-SG
  md5sum: 6b8079430b0958abbf77e944a677ac6b

5. References

  CVE numbers

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6. Change log

2009-06-30  VMSA-2009-0008
Initial security advisory after release of patches for ESX 3.5 on

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7. Contact

E-mail list for product security notifications and announcements:

This Security Advisory is posted to the following lists:

 * security-announce at lists.vmware.com
 * bugtraq at securityfocus.com
 * full-disclosure at lists.grok.org.uk

E-mail:  security at vmware.com
PGP key at: http://kb.vmware.com/kb/1055

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Copyright 2009 VMware Inc.  All rights reserved.

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