4879 : MIT Kerberos 5 Key Distribution Center Format String Logging
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
11	882	over 8 years ago	over 2 years ago	1 times	90%

Timeline

Discovery Date	Disclosure Date
2003-01-28	2003-01-28

Description

MIT Kerberos Key Distribution Center (KDC) contains a flaw that may allow a remote attacker to crash the service and possibly execute arbitrary code. The issue is due to format string flaws in the logging routines and Kerberos principal name specifiers of the KDC. If an attacker provides a specially crafted request, they can crash the service or execute arbitrary code with the same privilege the server runs under.

Classification

Location: Remote / Network Access, Local / Remote, Context Dependent
Attack Type: Authentication Management, Denial of Service, Input Manipulation
Impact: Loss of Integrity, Loss of Availability
Exploit: Exploit Public
Disclosure: OSVDB Verified

Solution

Upgrade to version 1.2.5 or higher, as it has been reported to fix this vulnerability. It is possible to partially correct the flaw by implementing the following workaround: Start KDC from a loop in a shell script, or from inittab. Please note that inittab is not recommended because it may fail if the KDC is crashed often in a short period. However, this workaround does not address the possibility of exploiting the format string vulnerability to gain access to the host system, so an upgrade is strongly recommended.

Products

MIT

Kerberos 5

1.2.4

References

ISS X-Force ID: 11189
CVE ID: 2003-0060 (see also: NVD)
Bugtraq ID: 6712
CERT VU: 787523
Vendor Specific Advisory URL: http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2003-001-multiple.txt
Generic Informational URL: http://www.ietf.org/rfc/rfc1510.txt

Tools & Filters

	11512
	1162 1164

Credit

E. Larry Lidz - ellidzeridu.uchicago.edu -

CVSSv2 Score

CVSSv2 Base Score = 7.5
Source: nvd.nist.gov | Generated: 2003-12-31 | Disagree?

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