45 lines
2.2 KiB
Bash
Executable File
45 lines
2.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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# a generic helper function unifying the specific checks executed on a running
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# image instance
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verify_image() {
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SSH_USER="$1"
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SSH_MACHINE="$2"
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SSH_OPTS="-o StrictHostKeyChecking=no $3"
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rlLogInfo "verify_image: SSH_OPTS:'$SSH_OPTS' SSH_USER:'$SSH_USER' SSH_MACHINE: '$SSH_MACHINE'"
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check_root_account "$@"
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}
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check_root_account() {
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# Try to SSH to a remote machine first using root account using password-based
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# auth (this is expected to fail) and then using key-based auth with the
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# supplied username to check content of /etc/shadow and audit.log.
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#
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# use: check_root_account <user> <machine> [ssh options]
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ROOT_ACCOUNT_LOCKED=${ROOT_ACCOUNT_LOCKED:-1}
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if [[ "$SSH_USER" == "" || "$SSH_MACHINE" == "" ]]; then
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rlFail "check_root_account: Missing user or machine parameter."
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return 1
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fi
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if [ $ROOT_ACCOUNT_LOCKED == 0 ]; then
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rlRun -t -c "ssh $SSH_OPTS ${SSH_USER}@${SSH_MACHINE} \"sudo grep '^root::' /etc/shadow\"" \
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0 "Password for root account in /etc/shadow is empty"
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else
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# ssh returns 255 in case of any ssh error, so it's better to grep the specific error message
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rlRun -t -c "ssh $SSH_OPTS -o PubkeyAuthentication=no root@${SSH_MACHINE} 2>&1 | grep -i 'permission denied ('" \
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0 "Can't ssh to '$SSH_MACHINE' as root using password-based auth"
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rlRun -t -c "ssh $SSH_OPTS ${SSH_USER}@${SSH_MACHINE} \"sudo grep -E '^root:(\*LOCK\*|!):' /etc/shadow\"" \
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0 "root account is disabled in /etc/shadow"
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rlRun -t -c "ssh $SSH_OPTS ${SSH_USER}@${SSH_MACHINE} \"sudo grep 'USER_LOGIN.*acct=\\\"root\\\".*terminal=ssh.*res=failed' /var/log/audit/audit.log\"" \
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0 "audit.log contains entry about unsuccessful root login"
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# We modify the default sshd settings on live ISO, so we can only check the default empty password setting
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# outside of live ISO
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rlRun -t -c "ssh $SSH_OPTS ${SSH_USER}@${SSH_MACHINE} 'sudo grep -E \"^[[:blank:]]*PermitEmptyPasswords[[:blank:]]*yes\" /etc/ssh/sshd_config'" 1 \
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"Login with empty passwords is disabled in sshd config file"
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fi
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rlRun -t -c "ssh $SSH_OPTS ${SSH_USER}@${SSH_MACHINE} 'cat /etc/redhat-release'"
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}
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