CVE-2011-0281: Mit Kerberos

Medium severity, CVSS 5.0. EPSS: 4.2% chance of exploitation in the next 30 days.

The unparse implementation in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.6.x through 1.9, when an LDAP backend is used, allows remote attackers to cause a denial of service (file descriptor exhaustion and daemon hang) via a principal name that triggers use of a backslash escape sequence, as demonstrated by a \n sequence.

Affected products

• Mit Kerberos: version 5-1.6.3 only
• Mit Kerberos 5: version 1.6 only; version 1.6.1 only; version 1.6.2 only; version 1.7 only; version 1.7.1 only; version 1.8 only; …

Published 2011-02-10. Last modified 2026-06-16.