Multiple security flaws were found in the vdsm SSL certificate validation code. Details:

Vdsclient can connect to VDSM services for remote management of virtual hosts stored on a remote node. During the connection the remote node presents a certificate.  The hostname of the remote host is presented in the certificate but not validated by the client connection to ensure that the host matches the correct name.  The SSL client should compare the hostname presented in the certificate to the host name returned in the server certificates "Common Name" field of the "subjectDN" entry. If this is not the case the connection should fail.