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AUSCERT External Security Bulletin Redistribution
ESB-2009.1011.3
ESX Service Console update for krb5
1 September 2009
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AusCERT Security Bulletin Summary
---------------------------------
Product: krb5
Publisher: VMware
Operating System: VMWare ESX Server
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2009-0846 CVE-2009-0845 CVE-2009-0844
Reference: ESB-2009.0344
ESB-2009.0330
Revision History: September 1 2009: Updated after release of ESX 3.0.3
patches and ESX 2.5.5 Upgrade Patch 14
July 13 2009: Updated CVE References
July 2 2009: Initial Release
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VMware Security Advisory
Advisory ID: VMSA-2009-0008.2
Synopsis: ESX Service Console update for krb5
Issue date: 2009-06-30
Updated on: 2009-08-31
CVE numbers: CVE-2009-0846 CVE-2009-0845 CVE-2009-0844
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1. Summary
Service Console package krb5 has been updated.
2. Relevant releases
VMware ESX 4.0.0 without bulletin ESX400-200906405-SG
VMware ESX 3.5.0 without patch ESX350-200906407-SG
VMware ESX 3.0.3 without patch ESX303-200908403-SG
VMware ESX 2.5.5 before Upgrade Patch 14
3. Problem Description
a. Service Console package krb5 update
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.
In addition the ESX 4.0 Service Console krb5 package was also
updated for CVE-2009-0845, and CVE-2009-0844 and RHBA-2009-0135.
MIT Kerberos versions 5 1.5 through 1.6.3 might allow remote
attackers to cause a denial of service by using invalid
ContextFlags data in the reqFlags field in a negTokenInit token.
The Common Vulnerabilities and Exposures Project (cve.mitre.org)
has assigned the name CVE-2009-0845 to this issue.
MIT Kerberos 5 before version 1.6.4 might allow remote attackers to
cause a denial of service or possibly execute arbitrary code by
using vectors involving an invalid DER encoding that triggers a
free of an uninitialized pointer.
The Common Vulnerabilities and Exposures Project (cve.mitre.org)
has assigned the name CVE-2009-0846 to this issue.
For ESX 4.0, 3.5, 3.0.3 the Service Console package pam_krb5 has
also been upgraded. For details on the non-security issues that
this upgrade addresses, refer to the respective KB article listed
in section 4 below.
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 ESX400-200906405-SG
ESX 3.5 ESX ESX350-200906407-SG
ESX 3.0.3 ESX ESX303-200908403-SG
ESX 3.0.2 ESX upgrade to ESX 3.0.3
ESX 2.5.5 ESX Upgrade Patch 14
* 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 4.0
-------
ESX400-200906001
http://tinyurl.com/ncfu5s
md5sum:cab549922f3429b236633c0e81351cde
sha1sum:aff76554ec5ee3c915eb4eac02e62c131163059a
Note: ESX400-200906001 contains the following security fixes
ESX400-200906411-SG, ESX400-200906406-SG, ESX400-200906405-SG,
ESX400-200906407-SG.
To install an individual bulletin use esxupdate with the -b option.
This example will install all security updates from ESX400-200906001
esxupdate --bundle ESX400-200906001.zip -b ESX400-200906411-SG \
-b ESX400-200906406-SG -b ESX400-200906405-SG -b \
ESX400-200906407-SG update
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
ESX 3.0.3 ESX303-200908403-SG
http://download3.vmware.com/software/vi/ESX303-200908403-SG.zip
md5sum: ace271a5d64bc575965c41c11612f265
http://kb.vmware.com/kb/1013189
ESX 2.5.5 Upgrade Patch 14
http://download3.vmware.com/software/esx/esx-2.5.5-184659-upgrade.tar.gz
md5sum: 8bf0a6a1e8b43ccb401f3a604c3be363
http://www.vmware.com/support/esx25/doc/esx-255-200908-patch.html
5. References
CVE numbers
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0844
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0845
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.
2009-07-10 VMSA-2009-0008.1
Updated after release bulletins for ESX 4.0 on 2009-07-10.
2009-08-31 VMSA-2009-0008.2
Updated after release of ESX 3.0.3 patches and ESX 2.5.5
Upgrade Patch 14.
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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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