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...t mindrot.org Reporter: tomas.kuthan at oracle.com On one of our internal systems we have encountered an issue, which we believe could be exploited to mount a deny-of-service attack on sshd. It was reported, that ssh service on that host was occasionally refusing new connections: $ ssh triassic date ssh_exchange_identification: Connection closed by remote host It turned out, that there were multiple processes hanging in the kernel trying to access user's authorized_keys file on an NFS home directory. The reason of the NFS hang is not that important (user's home dir has been move...