Colin Walters of Red Hat reported that cloud images including RHEL7 atomic cloud use MD5 for hashing the passwords. Link to RT: https://engineering.redhat.com/rt/Ticket/Display.html?id=364512&results=4fe06531482005289b2bd55008734d2c Complete list of affected cloud images: $ git grep -e --enablemd5 archive/cloud-engine-6.1.ks:auth --useshadow --enablemd5 archive/libra-express-6.0.ks:auth --useshadow --enablemd5 jbeap/jb-eap-5-rhel-6-ec2.ks:auth --useshadow --enablemd5 jbeap/jb-eap-6-rhel-6-ec2.ks:auth --useshadow --enablemd5 jbeap/jb-eap-6.4.0-rhel-6-ec2.ks:auth --useshadow --enablemd5 jbeap/jb-eap-6.4.0-rhel-6.6-ec2.ks:auth --useshadow --enablemd5 jbews/jb-ews-1-rhel-6-ec2.ks:auth --useshadow --enablemd5 jbon/jb-on-server-rhel-5-ec2.ks:auth --useshadow --enablemd5 jbon/jb-on-server-rhel-6-ec2.ks:auth --useshadow --enablemd5 mrg/mrg-grid-2-rhel-5-ec2.ks:auth --useshadow --enablemd5 mrg/mrg-grid-2-rhel-6-ec2.ks:auth --useshadow --enablemd5 rhel5/rhel-5.10-server-ec2.ks:auth --useshadow --enablemd5 rhel5/rhel-5.11-server-ec2.ks:auth --useshadow --enablemd5 rhel5/rhel-5.5-server-ec2.ks:auth --useshadow --enablemd5 rhel5/rhel-5.6-server-ec2.ks:auth --useshadow --enablemd5 rhel5/rhel-5.7-server-ec2.ks:auth --useshadow --enablemd5 rhel5/rhel-5.8-server-ec2.ks:auth --useshadow --enablemd5 rhel5/rhel-5.9-server-ec2.ks:auth --useshadow --enablemd5 rhel6/rhel-6-hwcert.ks:authconfig --enableshadow --enablemd5 rhel6/rhel-6.0-server-ec2.ks:auth --useshadow --enablemd5 rhel6/rhel-6.1-server-ec2.ks:auth --useshadow --enablemd5 rhel6/rhel-6.2-server-ec2.ks:auth --useshadow --enablemd5 rhel6/rhel-6.3-server-ec2.ks:auth --useshadow --enablemd5 rhel6/rhel-6.4-server-ec2.ks:auth --useshadow --enablemd5 rhel6/rhel-6.5-sap-ec2.ks:auth --useshadow --enablemd5 rhel6/rhel-6.5-server-ec2.ks:auth --useshadow --enablemd5 rhel6/rhel-6.6-sap-ec2.ks:auth --useshadow --enablemd5 rhel6/rhel-6.6-server-ec2.ks:auth --useshadow --enablemd5 rhel6/rhel-6.6-server-kvm.ks:auth --useshadow --enablemd5 rhel6/rhel-6.7-server-ec2.ks:auth --useshadow --enablemd5 rhel6/rhel-6.7-server-kvm.ks:auth --useshadow --enablemd5 rhel7/atomic-7.1-cloud.ks:auth --useshadow --enablemd5 rhel7/atomic-7.1-vagrant.ks:auth --useshadow --enablemd5 rhel7/rhel-7.1-docker-utility.ks:authconfig --enableshadow --enablemd5 rhel7/rhel-7.1-server-vagrant-kube.ks:authconfig --enableshadow --enablemd5 rhel7/rhel-7.1-server-vagrant.ks:authconfig --enableshadow --enablemd5 rhel7/rhel7-hyperv-utility.ks:authconfig --enableshadow --enablemd5 rhev/rhevm-3.5-rhel-6.6/rhevm-appliance.ks:auth --useshadow --enablemd5 rhev/rhevm-3.5-rhel-6.7/rhevm-appliance.ks:auth --useshadow --enablemd5 rhev/rhevm-3.6-rhel-6/rhevm-appliance.ks:auth --useshadow --enablemd5 rhui/rhel5-x86_64-AMAZON-CDS.ks:auth --useshadow --enablemd5 rhui/rhel5-x86_64-AMAZON-RHUA.ks:auth --useshadow --enablemd5 rhui/rhel5-x86_64-AMAZON-STARTER.ks:auth --useshadow --enablemd5 rova/rova.ks:auth --enablemd5 --enableshadow satellite/foreman-discovery-image.ks:auth --useshadow --enablemd5 storage/RHGS-3.1-ec2.ks:auth --useshadow --enablemd5 storage/RHS-2.0-ec2.ks:auth --useshadow --enablemd5 storage/RHS-2.1-ec2.ks:auth --useshadow --enablemd5 storage/RHS-3.0-ec2.ks:auth --useshadow --enablemd5