CVE-2017-12151

A flaw was found in the way samba client used encryption with the max protocol set as SMB3. The connection could lose the requirement for signing and encrypting to any DFS redirects, allowing an attacker to read or alter the contents of the connection via a man-in-the-middle attack.

The samba4 package in Red Hat Enterprise Linux 6, is a tech preview and by default uses the SMB1 protocol, therefore though affected by this flaw, will not be addressed in a security update.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Keep the default of "client max protocol = NT1".