Red Hat Security Advisory 2011-1379-01 - Kerberos is a network authentication system which allows clients and servers to authenticate to each other using symmetric encryption and a trusted third-party, the Key Distribution Center. Multiple NULL pointer dereference and assertion failure flaws were found in the MIT Kerberos KDC when it was configured to use an LDAP or Berkeley Database back end. A remote attacker could use these flaws to crash the KDC.
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