2013-09-11 21:40:12 EDT Due to older version , SSHClient used in oVirt uses only CBC ciphers. 
Version used in rhevm backend
==
pom.xml:    <sshd-core.version>0.7.0</sshd-core.version>
==

Ciphers used in Apache sshd-core 0.7.0
==
    avail.add(new AES128CBC.Factory()); 
    avail.add(new TripleDESCBC.Factory());
    avail.add(new BlowfishCBC.Factory());
    avail.add(new AES192CBC.Factory());
    avail.add(new AES256CBC.Factory());
==

Ciphers used in Apache sshd-core 0.8.0
==
    //Newly added after a security bug fix
    avail.add(new AES128CTR.Factory());
    avail.add(new AES256CTR.Factory());
    avail.add(new ARCFOUR128.Factory());
    avail.add(new ARCFOUR256.Factory());

    avail.add(new AES128CBC.Factory());
    avail.add(new TripleDESCBC.Factory());
    avail.add(new BlowfishCBC.Factory());
    avail.add(new AES192CBC.Factory());
    avail.add(new AES256CBC.Factory());
==

Only sshd-core-0.11.0 which was just released passes all our tests.