Bug Id
6691206

Product
Solaris 8 Operating System
Solaris 9 Operating System
Solaris 10 Operating System
OpenSolaris

Date of Resolved Release
11-Dec-2008

A security vulnerability in the management of Solaris Kerberos (see kerberos(5)) credential renewal:

1. Impact

A security vulnerability in the management of Solaris Kerberos (see kerberos(5)) credential renewal may allow a local unprivileged user to prevent other users from authenticating to the Kerberos server. This is a type of Denial of Service (DoS).

2. Contributing Factors

This issue can occur in the following releases:

SPARC Platform

• Solaris 8 without patch 109805-19
  
• Solaris 9 without patch 112908-33
• Solaris 10 without patch 139478-01
• Opensolaris based upon build snv_01 through snv_104

x86 Platform

• Solaris 8 without patch 109806-19
  
• Solaris 9 without patch 115168-18
• Solaris 10 without patch 139479-01
• Opensolaris based upon build snv_01 through snv_104

Note 1: This issue could affect all kerberized users.  To determine if your system is configured for Kerberos, run the following command:

    % grep default_realm /etc/krb5/krb5.conf

If the above command returns the following data, then your system is NOT  configured for Kerberos:

    #    default_realm = ___default_realm___
    #    ___default_realm___ = {
    #    ___domainname___ = ___default_realm___

Note 2:  OpenSolaris distributions may include additional bug fixes above and beyond the build from which it was derived. To determine the base build of  OpenSolaris, the following command can be used:

    $ uname -v
    snv_86

3. Symptoms

This issue exists on all systems utilizing Kerberos. If the described issue occurs, the following error message will be seen:

    Credentials cache file permissions incorrect when initializing cache

4. Workaround

There is no workaround for this issue.  Please see the Resolution section below.

5. Resolution

This issue is addressed in the following releases:

SPARC Platform

• Solaris 8 with patch 109805-19 or later
  
• Solaris 9 with patch 112908-33 or later
  
• Solaris 10 with patch 139478-01 or later
  
• Opensolaris based upon build snv_105 or later

x86 Platform

• Solaris 8 without patch 109806-19 or later
  
• Solaris 9 without patch 115168-18 or later
  
• Solaris 10 without patch 139479-01 or later
  
• Opensolaris based upon build snv_105 or later

For more information on Security Sun Alerts, see 1009886.1.

This Sun Alert notification is being provided to you on an "AS IS" basis. This Sun Alert notification may contain information provided by third parties. The issues described in this Sun Alert notification may or may not impact your system(s). Sun makes no representations, warranties, or guarantees as to the information contained herein. ANY AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT YOU ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN. This Sun Alert notification contains Sun proprietary and confidential information. It is being provided to you pursuant to the provisions of your agreement to purchase services from Sun, or, if you do not have such an agreement, the Sun.com Terms of Use. This Sun Alert notification may only be used for the purposes contemplated by these agreements.

Copyright 2000-2008 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, CA 95054 U.S.A. All rights reserved.

References

109805-19
109806-19
112908-33
115168-18
139478-01
139479-01







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