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CERT Coordination Center

MIT Kerberos krb4-enabled KDC contains multiple vulnerabilities

Vulnerability Note VU#895609

Original Release Date: 2008-03-19 | Last Revised: 2011-07-22

Overview

Vulnerabilities in the MIT Kerberos Key Distribution Center server could allow a remote attacker to compromise the key database, gain access to sensitive information, or cause a denial of service.

Description

Several vulnerabilities exist in the Authentication Service and Key Distribution Center server (krb5kdc) included in the MIT krb5 Kerberos implementation. In one case, the use of a null or dangling pointer in the KDC can result in a crash or double-free, and may leak portions of process memory to an attacker. In another case, uninitialized stack values cause reuse of a small window of previous stack values to be interpreted as message content. Some of this content may be returned to the attacker as part of an error response.

These vulnerabilities are only exposed if Kerberos 4 support is enabled. MIT notes that by default, Kerberos 4 support is compiled in but not enabled in recent versions of the software. MIT also notes that no other client or application server programs are affected.

Impact

An unauthenticated remote attacker may cause a krb4-enabled KDC server to crash, expose information (potentially including secret key data), or execute arbitrary code with the privileges of the krb5kdc. Secondary impacts include compromise of the Kerberos key database and denial of service to clients attempting to authenticate in the affected Kerberos realm.

Solution

Upgrade or apply a patch from the vendor

Patches have been released to address these issues. Please see the Systems Affected section of this document for more details.

Vendor Information

895609
 
Affected   Unknown   Unaffected

Apple Computer, Inc.

Notified:  March 06, 2008 Updated:  March 18, 2008

Status

  Vulnerable

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Addendum

Apple has published Apple Security Update 2008-002 to address these vulnerabilities. Users are encouraged to review this update and apply the patches it refers to.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

MIT Kerberos Development Team

Notified:  March 06, 2008 Updated:  March 18, 2008

Status

  Vulnerable

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Addendum

The MIT Kerberos Development Team has published MIT krb5 Security Advisory MITKRB5-SA-2008-001 in response to this issue. Users are encouraged to review this advisory and apply the appropriate patch or workaround.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Ubuntu

Notified:  March 06, 2008 Updated:  March 19, 2008

Status

  Vulnerable

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Addendum

Ubuntu has published Ubuntu Security Notice USN-587 in response to this issue. Users are encouraged to review this notice and apply the updates it refers to.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Cisco Systems, Inc.

Notified:  March 06, 2008 Updated:  March 10, 2008

Statement Date:   March 10, 2008

Status

  Not Vulnerable

Vendor Statement

PSIRT confirms our products that run MIT Kerberos are not affected by these vulnerabilities.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Computer Associates

Notified:  March 06, 2008 Updated:  March 18, 2008

Statement Date:   March 15, 2008

Status

  Not Vulnerable

Vendor Statement

FYI - no CA products ship or statically link with Kerberos libraries, so we do
not consider any CA products to be vulnerable.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Force10 Networks, Inc.

Notified:  March 06, 2008 Updated:  July 22, 2011

Status

  Not Affected

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Intel Corporation

Notified:  March 06, 2008 Updated:  March 10, 2008

Statement Date:   March 06, 2008

Status

  Not Vulnerable

Vendor Statement

Checked internally and Intel is not using MIT Kerberos in our product mix.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Intoto

Notified:  March 06, 2008 Updated:  March 10, 2008

Statement Date:   March 06, 2008

Status

  Not Vulnerable

Vendor Statement

Intoto products are not affected due to the potential exploits documented in this vulnerability note, because they do not use MIT Kerberos implementation.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Juniper Networks, Inc.

Notified:  March 06, 2008 Updated:  April 03, 2008

Statement Date:   March 19, 2008

Status

  Not Vulnerable

Vendor Statement

Juniper Networks products are not susceptible to this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Microsoft Corporation

Notified:  March 06, 2008 Updated:  April 03, 2008

Statement Date:   March 20, 2008

Status

  Not Vulnerable

Vendor Statement

Please update your advisory to indicate that Microsoft is not vulnerable.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Secure Computing Network Security Division

Notified:  March 06, 2008 Updated:  March 10, 2008

Statement Date:   March 06, 2008

Status

  Not Vulnerable

Vendor Statement

No Secure Computing products make use of MIT Kerberos.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Sun Microsystems, Inc.

Notified:  March 06, 2008 Updated:  March 18, 2008

Statement Date:   March 11, 2008

Status

  Not Vulnerable

Vendor Statement

Sun's Kerberos implementation is not impacted by these issues so you can
mark us down as 'Not Impacted'.  CERT VU#895609 corresponds to krb4 which
we don't support and we managed to address CERT VU#374121 in a different
bug fix years ago.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

TippingPoint, Technologies, Inc.

Notified:  March 06, 2008 Updated:  March 18, 2008

Statement Date:   March 11, 2008

Status

  Not Vulnerable

Vendor Statement

TippingPoint does not use the Kerberos implementation its products.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

3com, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

AT&T

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Alcatel

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Avaya, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Avici Systems, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Borderware Technologies

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Check Point Software Technologies

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Clavister

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Computer Associates eTrust Security Management

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Conectiva Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Cray Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

D-Link Systems, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Data Connection, Ltd.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Debian GNU/Linux

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

EMC Corporation

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Engarde Secure Linux

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Enterasys Networks

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Ericsson

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Extreme Networks

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

F5 Networks, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Fedora Project

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Fortinet, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Foundry Networks, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

FreeBSD, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Fujitsu

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Global Technology Associates

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Hewlett-Packard Company

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Hitachi

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Hyperchip

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

IBM Corporation

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

IBM Corporation (zseries)

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

IBM eServer

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

IP Infusion, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Ingrian Networks, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Internet Security Systems, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Linksys (A division of Cisco Systems)

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Lucent Technologies

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Luminous Networks

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Mandriva, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

McAfee

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

MontaVista Software, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Multinet (owned Process Software Corporation)

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Multitech, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

NEC Corporation

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

NetBSD

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Network Appliance, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

NextHop Technologies, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Nortel Networks, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Novell, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Openwall GNU/*/Linux

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

QNX, Software Systems, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Quagga

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Red Hat, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Redback Networks, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Riverstone Networks, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

SUSE Linux

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Silicon Graphics, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Slackware Linux Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Sony Corporation

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Stonesoft

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Symantec, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

The SCO Group

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Trustix Secure Linux

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Turbolinux

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Unisys

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Watchguard Technologies, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Wind River Systems, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

ZyXEL

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

eSoft, Inc.

Notified:  March 06, 2008 Updated:  March 06, 2008

Status

  Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

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CVSS Metrics

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A

References

Acknowledgements

Thanks to Ken Raeburn of the MIT Kerberos Team for reporting this vulnerability.

This document was written by Chad R Dougherty.

Other Information

CVE IDs: CVE-2008-0062, CVE-2008-0063
Severity Metric: 10.10
Date Public: 2008-03-18
Date First Published: 2008-03-19
Date Last Updated: 2011-07-22 12:52 UTC
Document Revision: 13

Sponsored by the Department of Homeland Security Office of Cybersecurity and Communications.