mirror of
git://anongit.mindrot.org/openssh.git
synced 2024-12-21 01:20:00 +00:00
dd369320d2
eliminate explicit specification of protocol in tests and loops over protocol. We only support SSHv2 now. Upstream-Regress-ID: 0082838a9b8a382b7ee9cbf0c1b9db727784fadd
391 lines
12 KiB
Bash
391 lines
12 KiB
Bash
# $OpenBSD: cert-userkey.sh,v 1.18 2017/04/30 23:34:55 djm Exp $
|
|
# Placed in the Public Domain.
|
|
|
|
tid="certified user keys"
|
|
|
|
rm -f $OBJ/authorized_keys_$USER $OBJ/user_ca_key* $OBJ/cert_user_key*
|
|
cp $OBJ/sshd_proxy $OBJ/sshd_proxy_bak
|
|
cp $OBJ/ssh_proxy $OBJ/ssh_proxy_bak
|
|
|
|
PLAIN_TYPES=`$SSH -Q key-plain | sed 's/^ssh-dss/ssh-dsa/;s/^ssh-//'`
|
|
|
|
if echo "$PLAIN_TYPES" | grep '^rsa$' >/dev/null 2>&1 ; then
|
|
PLAIN_TYPES="$PLAIN_TYPES rsa-sha2-256 rsa-sha2-512"
|
|
fi
|
|
|
|
kname() {
|
|
case $ktype in
|
|
rsa-sha2-*) ;;
|
|
# subshell because some seds will add a newline
|
|
*) n=$(echo $1 | sed 's/^dsa/ssh-dss/;s/^rsa/ssh-rsa/;s/^ed/ssh-ed/') ;;
|
|
esac
|
|
echo "$n*,ssh-rsa*,ssh-ed25519*"
|
|
}
|
|
|
|
# Create a CA key
|
|
${SSHKEYGEN} -q -N '' -t rsa -f $OBJ/user_ca_key ||\
|
|
fail "ssh-keygen of user_ca_key failed"
|
|
|
|
# Generate and sign user keys
|
|
for ktype in $PLAIN_TYPES $EXTRA_TYPES ; do
|
|
verbose "$tid: sign user ${ktype} cert"
|
|
${SSHKEYGEN} -q -N '' -t ${ktype} \
|
|
-f $OBJ/cert_user_key_${ktype} || \
|
|
fatal "ssh-keygen of cert_user_key_${ktype} failed"
|
|
# Generate RSA/SHA2 certs for rsa-sha2* keys.
|
|
case $ktype in
|
|
rsa-sha2-*) tflag="-t $ktype" ;;
|
|
*) tflag="" ;;
|
|
esac
|
|
${SSHKEYGEN} -q -s $OBJ/user_ca_key -z $$ \
|
|
-I "regress user key for $USER" \
|
|
-n ${USER},mekmitasdigoat $tflag $OBJ/cert_user_key_${ktype} || \
|
|
fatal "couldn't sign cert_user_key_${ktype}"
|
|
done
|
|
|
|
# Test explicitly-specified principals
|
|
for ktype in $EXTRA_TYPES $PLAIN_TYPES ; do
|
|
t=$(kname $ktype)
|
|
for privsep in yes no ; do
|
|
_prefix="${ktype} privsep $privsep"
|
|
|
|
# Setup for AuthorizedPrincipalsFile
|
|
rm -f $OBJ/authorized_keys_$USER
|
|
(
|
|
cat $OBJ/sshd_proxy_bak
|
|
echo "UsePrivilegeSeparation $privsep"
|
|
echo "AuthorizedPrincipalsFile " \
|
|
"$OBJ/authorized_principals_%u"
|
|
echo "TrustedUserCAKeys $OBJ/user_ca_key.pub"
|
|
echo "PubkeyAcceptedKeyTypes ${t}"
|
|
) > $OBJ/sshd_proxy
|
|
(
|
|
cat $OBJ/ssh_proxy_bak
|
|
echo "PubkeyAcceptedKeyTypes ${t}"
|
|
) > $OBJ/ssh_proxy
|
|
|
|
# Missing authorized_principals
|
|
verbose "$tid: ${_prefix} missing authorized_principals"
|
|
rm -f $OBJ/authorized_principals_$USER
|
|
${SSH} -i $OBJ/cert_user_key_${ktype} \
|
|
-F $OBJ/ssh_proxy somehost true >/dev/null 2>&1
|
|
if [ $? -eq 0 ]; then
|
|
fail "ssh cert connect succeeded unexpectedly"
|
|
fi
|
|
|
|
# Empty authorized_principals
|
|
verbose "$tid: ${_prefix} empty authorized_principals"
|
|
echo > $OBJ/authorized_principals_$USER
|
|
${SSH} -i $OBJ/cert_user_key_${ktype} \
|
|
-F $OBJ/ssh_proxy somehost true >/dev/null 2>&1
|
|
if [ $? -eq 0 ]; then
|
|
fail "ssh cert connect succeeded unexpectedly"
|
|
fi
|
|
|
|
# Wrong authorized_principals
|
|
verbose "$tid: ${_prefix} wrong authorized_principals"
|
|
echo gregorsamsa > $OBJ/authorized_principals_$USER
|
|
${SSH} -i $OBJ/cert_user_key_${ktype} \
|
|
-F $OBJ/ssh_proxy somehost true >/dev/null 2>&1
|
|
if [ $? -eq 0 ]; then
|
|
fail "ssh cert connect succeeded unexpectedly"
|
|
fi
|
|
|
|
# Correct authorized_principals
|
|
verbose "$tid: ${_prefix} correct authorized_principals"
|
|
echo mekmitasdigoat > $OBJ/authorized_principals_$USER
|
|
${SSH} -i $OBJ/cert_user_key_${ktype} \
|
|
-F $OBJ/ssh_proxy somehost true >/dev/null 2>&1
|
|
if [ $? -ne 0 ]; then
|
|
fail "ssh cert connect failed"
|
|
fi
|
|
|
|
# authorized_principals with bad key option
|
|
verbose "$tid: ${_prefix} authorized_principals bad key opt"
|
|
echo 'blah mekmitasdigoat' > $OBJ/authorized_principals_$USER
|
|
${SSH} -i $OBJ/cert_user_key_${ktype} \
|
|
-F $OBJ/ssh_proxy somehost true >/dev/null 2>&1
|
|
if [ $? -eq 0 ]; then
|
|
fail "ssh cert connect succeeded unexpectedly"
|
|
fi
|
|
|
|
# authorized_principals with command=false
|
|
verbose "$tid: ${_prefix} authorized_principals command=false"
|
|
echo 'command="false" mekmitasdigoat' > \
|
|
$OBJ/authorized_principals_$USER
|
|
${SSH} -i $OBJ/cert_user_key_${ktype} \
|
|
-F $OBJ/ssh_proxy somehost true >/dev/null 2>&1
|
|
if [ $? -eq 0 ]; then
|
|
fail "ssh cert connect succeeded unexpectedly"
|
|
fi
|
|
|
|
|
|
# authorized_principals with command=true
|
|
verbose "$tid: ${_prefix} authorized_principals command=true"
|
|
echo 'command="true" mekmitasdigoat' > \
|
|
$OBJ/authorized_principals_$USER
|
|
${SSH} -i $OBJ/cert_user_key_${ktype} \
|
|
-F $OBJ/ssh_proxy somehost false >/dev/null 2>&1
|
|
if [ $? -ne 0 ]; then
|
|
fail "ssh cert connect failed"
|
|
fi
|
|
|
|
# Setup for principals= key option
|
|
rm -f $OBJ/authorized_principals_$USER
|
|
(
|
|
cat $OBJ/sshd_proxy_bak
|
|
echo "UsePrivilegeSeparation $privsep"
|
|
echo "PubkeyAcceptedKeyTypes ${t}"
|
|
) > $OBJ/sshd_proxy
|
|
(
|
|
cat $OBJ/ssh_proxy_bak
|
|
echo "PubkeyAcceptedKeyTypes ${t}"
|
|
) > $OBJ/ssh_proxy
|
|
|
|
# Wrong principals list
|
|
verbose "$tid: ${_prefix} wrong principals key option"
|
|
(
|
|
printf 'cert-authority,principals="gregorsamsa" '
|
|
cat $OBJ/user_ca_key.pub
|
|
) > $OBJ/authorized_keys_$USER
|
|
${SSH} -i $OBJ/cert_user_key_${ktype} \
|
|
-F $OBJ/ssh_proxy somehost true >/dev/null 2>&1
|
|
if [ $? -eq 0 ]; then
|
|
fail "ssh cert connect succeeded unexpectedly"
|
|
fi
|
|
|
|
# Correct principals list
|
|
verbose "$tid: ${_prefix} correct principals key option"
|
|
(
|
|
printf 'cert-authority,principals="mekmitasdigoat" '
|
|
cat $OBJ/user_ca_key.pub
|
|
) > $OBJ/authorized_keys_$USER
|
|
${SSH} -i $OBJ/cert_user_key_${ktype} \
|
|
-F $OBJ/ssh_proxy somehost true >/dev/null 2>&1
|
|
if [ $? -ne 0 ]; then
|
|
fail "ssh cert connect failed"
|
|
fi
|
|
done
|
|
done
|
|
|
|
basic_tests() {
|
|
auth=$1
|
|
if test "x$auth" = "xauthorized_keys" ; then
|
|
# Add CA to authorized_keys
|
|
(
|
|
printf 'cert-authority '
|
|
cat $OBJ/user_ca_key.pub
|
|
) > $OBJ/authorized_keys_$USER
|
|
else
|
|
echo > $OBJ/authorized_keys_$USER
|
|
extra_sshd="TrustedUserCAKeys $OBJ/user_ca_key.pub"
|
|
fi
|
|
|
|
for ktype in $PLAIN_TYPES ; do
|
|
t=$(kname $ktype)
|
|
for privsep in yes no ; do
|
|
_prefix="${ktype} privsep $privsep $auth"
|
|
# Simple connect
|
|
verbose "$tid: ${_prefix} connect"
|
|
(
|
|
cat $OBJ/sshd_proxy_bak
|
|
echo "UsePrivilegeSeparation $privsep"
|
|
echo "PubkeyAcceptedKeyTypes ${t}"
|
|
echo "$extra_sshd"
|
|
) > $OBJ/sshd_proxy
|
|
(
|
|
cat $OBJ/ssh_proxy_bak
|
|
echo "PubkeyAcceptedKeyTypes ${t}"
|
|
) > $OBJ/ssh_proxy
|
|
|
|
${SSH} -i $OBJ/cert_user_key_${ktype} \
|
|
-F $OBJ/ssh_proxy somehost true
|
|
if [ $? -ne 0 ]; then
|
|
fail "ssh cert connect failed"
|
|
fi
|
|
|
|
# Revoked keys
|
|
verbose "$tid: ${_prefix} revoked key"
|
|
(
|
|
cat $OBJ/sshd_proxy_bak
|
|
echo "UsePrivilegeSeparation $privsep"
|
|
echo "RevokedKeys $OBJ/cert_user_key_revoked"
|
|
echo "PubkeyAcceptedKeyTypes ${t}"
|
|
echo "$extra_sshd"
|
|
) > $OBJ/sshd_proxy
|
|
cp $OBJ/cert_user_key_${ktype}.pub \
|
|
$OBJ/cert_user_key_revoked
|
|
${SSH} -i $OBJ/cert_user_key_${ktype} \
|
|
-F $OBJ/ssh_proxy somehost true >/dev/null 2>&1
|
|
if [ $? -eq 0 ]; then
|
|
fail "ssh cert connect succeeded unexpecedly"
|
|
fi
|
|
verbose "$tid: ${_prefix} revoked via KRL"
|
|
rm $OBJ/cert_user_key_revoked
|
|
${SSHKEYGEN} -kqf $OBJ/cert_user_key_revoked \
|
|
$OBJ/cert_user_key_${ktype}.pub
|
|
${SSH} -i $OBJ/cert_user_key_${ktype} \
|
|
-F $OBJ/ssh_proxy somehost true >/dev/null 2>&1
|
|
if [ $? -eq 0 ]; then
|
|
fail "ssh cert connect succeeded unexpecedly"
|
|
fi
|
|
verbose "$tid: ${_prefix} empty KRL"
|
|
${SSHKEYGEN} -kqf $OBJ/cert_user_key_revoked
|
|
${SSH} -i $OBJ/cert_user_key_${ktype} \
|
|
-F $OBJ/ssh_proxy somehost true >/dev/null 2>&1
|
|
if [ $? -ne 0 ]; then
|
|
fail "ssh cert connect failed"
|
|
fi
|
|
done
|
|
|
|
# Revoked CA
|
|
verbose "$tid: ${ktype} $auth revoked CA key"
|
|
(
|
|
cat $OBJ/sshd_proxy_bak
|
|
echo "RevokedKeys $OBJ/user_ca_key.pub"
|
|
echo "PubkeyAcceptedKeyTypes ${t}"
|
|
echo "$extra_sshd"
|
|
) > $OBJ/sshd_proxy
|
|
${SSH} -i $OBJ/cert_user_key_${ktype} -F $OBJ/ssh_proxy \
|
|
somehost true >/dev/null 2>&1
|
|
if [ $? -eq 0 ]; then
|
|
fail "ssh cert connect succeeded unexpecedly"
|
|
fi
|
|
done
|
|
|
|
verbose "$tid: $auth CA does not authenticate"
|
|
(
|
|
cat $OBJ/sshd_proxy_bak
|
|
echo "PubkeyAcceptedKeyTypes ${t}"
|
|
echo "$extra_sshd"
|
|
) > $OBJ/sshd_proxy
|
|
verbose "$tid: ensure CA key does not authenticate user"
|
|
${SSH} -i $OBJ/user_ca_key \
|
|
-F $OBJ/ssh_proxy somehost true >/dev/null 2>&1
|
|
if [ $? -eq 0 ]; then
|
|
fail "ssh cert connect with CA key succeeded unexpectedly"
|
|
fi
|
|
}
|
|
|
|
basic_tests authorized_keys
|
|
basic_tests TrustedUserCAKeys
|
|
|
|
test_one() {
|
|
ident=$1
|
|
result=$2
|
|
sign_opts=$3
|
|
auth_choice=$4
|
|
auth_opt=$5
|
|
|
|
if test "x$auth_choice" = "x" ; then
|
|
auth_choice="authorized_keys TrustedUserCAKeys"
|
|
fi
|
|
|
|
for auth in $auth_choice ; do
|
|
for ktype in rsa ed25519 ; do
|
|
cat $OBJ/sshd_proxy_bak > $OBJ/sshd_proxy
|
|
if test "x$auth" = "xauthorized_keys" ; then
|
|
# Add CA to authorized_keys
|
|
(
|
|
printf "cert-authority${auth_opt} "
|
|
cat $OBJ/user_ca_key.pub
|
|
) > $OBJ/authorized_keys_$USER
|
|
else
|
|
echo > $OBJ/authorized_keys_$USER
|
|
echo "TrustedUserCAKeys $OBJ/user_ca_key.pub" \
|
|
>> $OBJ/sshd_proxy
|
|
echo "PubkeyAcceptedKeyTypes ${t}*" \
|
|
>> $OBJ/sshd_proxy
|
|
if test "x$auth_opt" != "x" ; then
|
|
echo $auth_opt >> $OBJ/sshd_proxy
|
|
fi
|
|
fi
|
|
|
|
verbose "$tid: $ident auth $auth expect $result $ktype"
|
|
${SSHKEYGEN} -q -s $OBJ/user_ca_key \
|
|
-I "regress user key for $USER" \
|
|
$sign_opts $OBJ/cert_user_key_${ktype} ||
|
|
fail "couldn't sign cert_user_key_${ktype}"
|
|
|
|
${SSH} -i $OBJ/cert_user_key_${ktype} \
|
|
-F $OBJ/ssh_proxy somehost true >/dev/null 2>&1
|
|
rc=$?
|
|
if [ "x$result" = "xsuccess" ] ; then
|
|
if [ $rc -ne 0 ]; then
|
|
fail "$ident failed unexpectedly"
|
|
fi
|
|
else
|
|
if [ $rc -eq 0 ]; then
|
|
fail "$ident succeeded unexpectedly"
|
|
fi
|
|
fi
|
|
done
|
|
done
|
|
}
|
|
|
|
test_one "correct principal" success "-n ${USER}"
|
|
test_one "host-certificate" failure "-n ${USER} -h"
|
|
test_one "wrong principals" failure "-n foo"
|
|
test_one "cert not yet valid" failure "-n ${USER} -V20200101:20300101"
|
|
test_one "cert expired" failure "-n ${USER} -V19800101:19900101"
|
|
test_one "cert valid interval" success "-n ${USER} -V-1w:+2w"
|
|
test_one "wrong source-address" failure "-n ${USER} -Osource-address=10.0.0.0/8"
|
|
test_one "force-command" failure "-n ${USER} -Oforce-command=false"
|
|
|
|
# Behaviour is different here: TrustedUserCAKeys doesn't allow empty principals
|
|
test_one "empty principals" success "" authorized_keys
|
|
test_one "empty principals" failure "" TrustedUserCAKeys
|
|
|
|
# Check explicitly-specified principals: an empty principals list in the cert
|
|
# should always be refused.
|
|
|
|
# AuthorizedPrincipalsFile
|
|
rm -f $OBJ/authorized_keys_$USER
|
|
echo mekmitasdigoat > $OBJ/authorized_principals_$USER
|
|
test_one "AuthorizedPrincipalsFile principals" success "-n mekmitasdigoat" \
|
|
TrustedUserCAKeys "AuthorizedPrincipalsFile $OBJ/authorized_principals_%u"
|
|
test_one "AuthorizedPrincipalsFile no principals" failure "" \
|
|
TrustedUserCAKeys "AuthorizedPrincipalsFile $OBJ/authorized_principals_%u"
|
|
|
|
# principals= key option
|
|
rm -f $OBJ/authorized_principals_$USER
|
|
test_one "principals key option principals" success "-n mekmitasdigoat" \
|
|
authorized_keys ',principals="mekmitasdigoat"'
|
|
test_one "principals key option no principals" failure "" \
|
|
authorized_keys ',principals="mekmitasdigoat"'
|
|
|
|
# command= options vs. force-command in key
|
|
test_one "force-command match true" success \
|
|
"-n ${USER} -Oforce-command=true" \
|
|
authorized_keys ',command="true"'
|
|
test_one "force-command match true" failure \
|
|
"-n ${USER} -Oforce-command=false" \
|
|
authorized_keys ',command="false"'
|
|
test_one "force-command mismatch 1" failure \
|
|
"-n ${USER} -Oforce-command=false" \
|
|
authorized_keys ',command="true"'
|
|
test_one "force-command mismatch 2" failure \
|
|
"-n ${USER} -Oforce-command=true" \
|
|
authorized_keys ',command="false"'
|
|
|
|
# Wrong certificate
|
|
cat $OBJ/sshd_proxy_bak > $OBJ/sshd_proxy
|
|
for ktype in $PLAIN_TYPES ; do
|
|
t=$(kname $ktype)
|
|
# Self-sign
|
|
${SSHKEYGEN} -q -s $OBJ/cert_user_key_${ktype} -I \
|
|
"regress user key for $USER" \
|
|
-n $USER $OBJ/cert_user_key_${ktype} ||
|
|
fatal "couldn't sign cert_user_key_${ktype}"
|
|
verbose "$tid: user ${ktype} connect wrong cert"
|
|
${SSH} -i $OBJ/cert_user_key_${ktype} -F $OBJ/ssh_proxy \
|
|
somehost true >/dev/null 2>&1
|
|
if [ $? -eq 0 ]; then
|
|
fail "ssh cert connect $ident succeeded unexpectedly"
|
|
fi
|
|
done
|
|
|
|
rm -f $OBJ/authorized_keys_$USER $OBJ/user_ca_key* $OBJ/cert_user_key*
|
|
rm -f $OBJ/authorized_principals_$USER
|
|
|