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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
   krb5-1.2.7-70.

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
   ---
   ESX 3.5.0 ESX350-200906407-SG
   http://download3.vmware.com/software/vi/ESX350-200906407-SG.zip
   md5sum: 6b8079430b0958abbf77e944a677ac6b
   http://kb.vmware.com/kb/1011801

5. References

   CVE numbers
   http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0846

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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
2009-06-30.

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7. Contact

E-mail list for product security notifications and announcements:
http://lists.vmware.com/cgi-bin/mailman/listinfo/security-announce

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

VMware Security Center
http://www.vmware.com/security

VMware security response policy
http://www.vmware.com/support/policies/security_response.html

General support life cycle policy
http://www.vmware.com/support/policies/eos.html

VMware Infrastructure support life cycle policy
http://www.vmware.com/support/policies/eos_vi.html

Copyright 2009 VMware Inc.  All rights reserved.


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