CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS
Percentile
90.4%
MIT Kerberos V5 contains a flaw that allows the controller of one Kerberos realm to impersonate users in a second realm.
MIT Kerberos V5 releases prior to 1.2.3 contain a vulnerability that allows users from one realm to impersonate users from other non-local realms that use the same (shared) keys. This vulnerability is the result of a flaw in the chk_trans.c
file of the libkrb5 library and affects both the Key Distribution Center (KDC) and other Kerberos application servers.
This vulnerability may allow users to gain unauthorized access to other realms, with various impacts possible depending on the Kerberos access control list (ACL) for each realm.
Update your Kerberos installation
This vulnerability was addressed in MIT Kerberos V5 1.2.3. MIT krb5 Security Advisory 2003-001 provides additional information from MIT and is available at:
http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2003-001-multiple.txt
For information regarding other vendors who may be affected, please see the vendor section of this document.
Follow the suggestions in MIT krb5 Security Advisory 2003-001
MIT krb5 Security Advisory 2003-001 provides the following recommendations for sites that are unable to apply a patch immediately:
Workarounds:
Delete or change inter-realm keys so inter-realm authentication is disabled.
Remove all non-local principals from all critical ACLs in services using old MIT Kerberos code to validate the realm transit path
684563
Filter by status: All Affected Not Affected Unknown
Filter by content: __ Additional information available
__ Sort by: Status Alphabetical
Expand all
Javascript is disabled. Click here to view vendors.
Notified: May 20, 2002 Updated: January 30, 2003
Affected
MIT recommends updating to release 1.2.5 or later, preferably to the latest release. Patches specifically to fix these problems are not available at this time.
The vendor has not provided us with any further information regarding this vulnerability.
The MIT Kerberos Development Team has published MIT krb5 Security Advisory 2003-001 to address this vulnerability. For more information, please see:
http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2003-001-multiple.txt
If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23684563 Feedback>).
Notified: April 03, 2003 Updated: April 04, 2003
Affected
We have not received a statement from the vendor.
The vendor has not provided us with any further information regarding this vulnerability.
MandrakeSoft has published Security Advisory MDKSA-2003:043-1 to address this vulnerability. For more information, please see:
http://www.mandrakesecure.net/en/advisories/advisory.php?name=MDKSA-2003:043-1
If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23684563 Feedback>).
Notified: July 25, 2002 Updated: January 31, 2003
Affected
We worked with MIT on this issue, and identified that in a very limited and specific situation we possess this flaw in our implementation of Kerberos.
We have written a fix that will address such a situation, and checked it into the next service pack.
The vendor has not provided us with any further information regarding this vulnerability.
The CERT/CC has no additional comments at this time.
If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23684563 Feedback>).
Notified: March 26, 2003 Updated: March 27, 2003
Affected
We have not received a statement from the vendor.
The vendor has not provided us with any further information regarding this vulnerability.
Red Hat, Inc. has published Red Hat Security Advisory RHSA-2003:051-01 to address this vulnerability. For more information, please see
https://rhn.redhat.com/errata/RHSA-2003-051.html
If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23684563 Feedback>).
Notified: July 25, 2002 Updated: January 29, 2003
Unknown
We have not received a statement from the vendor.
The vendor has not provided us with any further information regarding this vulnerability.
The CERT/CC has no additional comments at this time.
If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23684563 Feedback>).
Group | Score | Vector |
---|---|---|
Base | ||
Temporal | ||
Environmental |
The CERT/CC thanks Joseph Sokol-Margolis and Gerald Britton for discovering this vulnerability and Ken Raeburn of MIT for bringing it to our attention.
This document was written by Shawn Van Ittersum and Jeffrey P. Lanza.
CVE IDs: | CVE-2003-0059 |
---|---|
Severity Metric: | 14.47 Date Public: |