MIT Kerberos KDC logging routine format string
| kerberos-kdc-format-string (11189) |  High Risk |
Description:
The MIT Kerberos Key Distribution Center (KDC) is vulnerable to a format string attack, caused by a vulnerability in the KDC logging routines. A remote attacker could exploit this vulnerability by passing malicious format strings to the affected server to cause the KDC to crash or possibly execute arbitrary commands on the system.
Platforms Affected:
- Conectiva, Linux 8.0
- MIT, Kerberos 5-1.2.1
- MIT, Kerberos 5-1.2.2
- MIT, Kerberos 5-1.2.3
- MIT, Kerberos 5-1.2.4
Remedy:
Upgrade to the latest version of MIT Kerberos 5 (krb5-1.2.7 or later), available from the MIT Kerberos Web site. See References.
For Conectiva Linux 8.0:
Upgrade to the latest version of krb5 (1.2.8-1U80_1cl or later), as listed in Conectiva Linux Security Announcement CLSA-2003:639. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Gain Access
References:
- CIAC Information Bulletin N-037, Multiple Vulnerabilities in Old Releases of MIT Kerberos at http://www.ciac.org/ciac/bulletins/n-037.shtml.
- Conectiva Linux Security Announcement CLSA-2003:639, krb5 at http://distro.conectiva.com/atualizacoes/?id=a&anuncio=000639.
- MIT Kerberos Web site, Kerberos: The Network Authentication Protocol at http://web.mit.edu/kerberos/www/.
- MIT krb5 Security Advisory 2003-001, Multiple vulnerabilities in old releases of MIT Kerberos at http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2003-001-multiple.txt.
- BID-6712: MIT Kerberos Key Distribution Center Remote Format String Vulnerabilities
- CVE-2003-0060: Format string vulnerabilities in the logging routines for MIT Kerberos V5 Key Distribution Center (KDC) before 1.2.5 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via format string specifiers in Kerberos principal names.
- OSVDB ID: 4879: MIT Kerberos Key Distribution Center Format String Logging
- US-CERT VU#787523: MIT Kerberos V5 KDC logging routines use unsafe format strings
Reported:
Jan 28, 2003
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