The do_standalone function in the MIT krb5 KDC database propagation daemon (kpropd) in Kerberos 1.7 1.8 and 1.9 when running in standalone mode does not properly handle when a worker child process \exits abnormally \ which allows remote attackers to cause a denial of service (listening process termination no new connections and lack of updates in slave KVC) via unspecified vectors.