yast2-users before 3.1.47, as used in SUSE Linux Enterprise 12 SP1, does not properly set empty password fields in /etc/shadow during an AutoYaST installation when the profile does not contain inst-sys users, which might allow attackers to have unspecified impact via unknown vectors.
https://build.opensuse.org/request/show/388020
https://bugzilla.suse.com/show_bug.cgi?id=974220
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00007.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00051.html