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Update lxde_ssh_warn.sh

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A Holt 2018-10-15 02:46:15 -04:00 committed by GitHub
parent a506f9f3e6
commit 837f5953fd
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1 changed files with 24 additions and 14 deletions
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38
roles/iiab-admin/templates/lxde_ssh_warn.sh
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@ -1,22 +1,32 @@
#!/bin/bash #!/bin/bash
function check_user_pwd() {
# $meth (hashing method) is typically '6' which implies 5000 rounds
# of SHA-512 per /etc/login.defs -> /etc/pam.d/common-password
meth=$(sudo grep "^$1:" /etc/shadow | cut -d: -f2 | cut -d$ -f2)
salt=$(sudo grep "^$1:" /etc/shadow | cut -d: -f2 | cut -d$ -f3)
hash=$(sudo grep "^$1:" /etc/shadow | cut -d: -f2 | cut -d$ -f4)
[ $(python3 -c "import crypt; print(crypt.crypt('$2', '\$$meth\$$salt'))") == "\$$meth\$$salt\$$hash" ]
}
# credit to the folks at raspberry pi foundatioon # credit to the folks at raspberry pi foundatioon
check_hash () check_hash () {
{
if ! id -u iiab-admin > /dev/null 2>&1 ; then return 0 ; fi if ! id -u iiab-admin > /dev/null 2>&1 ; then return 0 ; fi
if grep -q "^PasswordAuthentication\s*no" /etc/ssh/sshd_config ; then return 0 ; fi if grep -q "^PasswordAuthentication\s*no" /etc/ssh/sshd_config ; then return 0 ; fi
test -x /usr/bin/mkpasswd || return 0 #test -x /usr/bin/mkpasswd || return 0
SHADOW="$(sudo -n grep -E '^iiab-admin:' /etc/shadow 2>/dev/null)" #SHADOW="$(sudo -n grep -E '^iiab-admin:' /etc/shadow 2>/dev/null)"
test -n "${SHADOW}" || return 0 #test -n "${SHADOW}" || return 0
if echo $SHADOW | grep -q "iiab-admin:!" ; then return 0 ; fi #if echo $SHADOW | grep -q "iiab-admin:!" ; then return 0 ; fi
SHADOW_PW=$(echo $SHADOW | cut -d: -f2) #SHADOW_PW=$(echo $SHADOW | cut -d: -f2)
if [ "$SHADOW_PW" != "\$6\$iiab51\$D.IrrEeLBYIuJkGDmi27pZUGOwPFp98qpl3hxMwWV4hXigFGmdSvy3s/j7tn6OnyTTLmlV7SsN0lCUAFzxSop." ]; then return 0 ; fi #if [ "$SHADOW_PW" != "\$6\$iiab51\$D.IrrEeLBYIuJkGDmi27pZUGOwPFp98qpl3hxMwWV4hXigFGmdSvy3s/j7tn6OnyTTLmlV7SsN0lCUAFzxSop." ]; then return 0 ; fi
#if echo "${SHADOW}" | grep -q "${HASH}"; then
if echo "${SHADOW}" | grep -q "${HASH}"; then if check_user_pwd "iiab-admin" "g0adm1n"; then
zenity --warning --text="SSH is enabled and the default password for the 'iiab-admin' user has not been changed.\nThis is a security risk - please go to the iiab-console and use utilities-> change password to set a new password." zenity --warning --text="SSH is enabled and the default password for user 'iiab-admin' is in use.\nThis is a security risk - please change the password using IIAB's Admin Console (http://box/admin) -> Utilities -> Change Password."
fi fi
} }
if service ssh status | grep -q running; then #if service ssh status | grep -q running; then
check_hash # check_hash
fi #fi
systemctl is-active {{ sshd_service }} > /dev/null && check_hash
unset check_hash unset check_hash