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
94.6%
Early releases of the MIT Kerberos V5 KDC contain format string vulnerabilities that can be used by unauthenticated remote attackers to conduct denial of service attacks on KDC servers.
Logging routines in some (unspecified) versions of the MIT Kerberos V5 Key Distribution Center (KDC) use Kerberos principal names as format strings for printf-style output functions. Principal names that contain certain printf format specifiers (such as ‘%n’) may cause the KDC logging routines to read from or write to memory. Some vulnerable functions are called prior to authentication, therefore these vulnerabilities can be exploited by remote anonymous users. Note that vulnerabilities of this type may allow the execution of arbitrary code under certain circumstances.
This vulnerability may allow unauthenticated remote attackers to crash affected KDC processes, resulting in a denial of service condition.
This vulnerability was addressed in MIT Kerberos V5 1.2.5, released on April 30, 2002. 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.
787523
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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%23787523 Feedback>).
Notified: July 29, 2002 Updated: January 31, 2003
Not Affected
The Microsoft implementation of the KDC does not have the issue described in CERT VU#787523.
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%23787523 Feedback>).
Notified: July 29, 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%23787523 Feedback>).
Group | Score | Vector |
---|---|---|
Base | N/A | N/A |
Temporal | N/A | N/A |
Environmental | N/A |
The CERT/CC thanks to E. Larry Lidz 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-2003-0060 |
---|---|
Severity Metric: | 19.69 Date Public: |