mirror of https://github.com/wolfSSL/wolfssh.git
wolfsshd: issue the test certificates per run
sshd_ossh_cert_test.sh generates its OpenSSH certificates into its own work directory, through the OSSH_CERT_DIR that renew-ossh-certs.sh now reads. Only the keypairs stay shared, and those are committed. - the names carry just the login user, so two runs in one checkout reissued each other's certificates and the force-command case failed on a marker written to the other run's directorypull/1215/merge
John Safranek
philljj
parent
b8f5df10e7
commit
3f5ceff2d4
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@ -76,11 +76,19 @@ HOSTKEY="$WORK/hostkey.pem"
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cp "$ROOT/keys/server-key.pem" "$HOSTKEY"
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chmod 600 "$HOSTKEY"
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# Issue certificates bound to the login user (and the negatives). The
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# force-command marker is placed under the per-run work dir, not a fixed,
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# world-readable /tmp path.
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# Issue certificates bound to the login user (and the negatives), into this
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# run's own directory. Written into keys/ they carried only the login user in
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# their names, so two runs overwrote each other's: both principals matched,
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# and the force-command certificate names the marker directory of whichever
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# run issued it last, so a run could authenticate with the other's certificate
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# and then fail its own marker assertion. Only the keypairs are shared, and
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# those are committed. The force-command marker likewise goes under the
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# per-run work dir, not a fixed, world-readable /tmp path.
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CERTS="$WORK/certs"
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mkdir -p "$CERTS"
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chmod 755 "$CERTS"
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( cd "$ROOT/keys" && OSSH_FORCED_MARKER="$MARKERDIR/forced_marker" \
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./renew-ossh-certs.sh "$LOGINUSER" )
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OSSH_CERT_DIR="$CERTS" ./renew-ossh-certs.sh "$LOGINUSER" )
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# Trust all three signing CAs (Ed25519, RSA, ECDSA) but not ossh-bad-ca.
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cat "$ROOT/keys/ossh-ca.pub" "$ROOT/keys/ossh-ca-rsa.pub" \
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@ -256,38 +264,38 @@ scp_check() { # label user-key cert expect(0=allowed,1=denied)
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run_suite() { # driver
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DRIVER=$1
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echo "OpenSSH cert test via $DRIVER client (user=$LOGINUSER, port=$PORT):"
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check "valid cert" "$ED" "$ROOT/keys/$LOGINUSER-ossh-cert.pub" 0
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check "RSA CA" "$ED" "$ROOT/keys/$LOGINUSER-ossh-rsaca-cert.pub" 0
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check "ECDSA CA" "$ED" "$ROOT/keys/$LOGINUSER-ossh-ecdsaca-cert.pub" 0
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check "RSA user key" "$RSA" "$ROOT/keys/$LOGINUSER-ossh-rsauser-cert.pub" 0
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check "ECDSA user key" "$ECC" "$ROOT/keys/$LOGINUSER-ossh-ecdsauser-cert.pub" 0
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check "untrusted CA" "$ED" "$ROOT/keys/$LOGINUSER-ossh-badca-cert.pub" 1
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check "wrong principal" "$ED" "$ROOT/keys/$LOGINUSER-ossh-wrongprincipal-cert.pub" 1
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check "empty principal" "$ED" "$ROOT/keys/$LOGINUSER-ossh-noprincipal-cert.pub" 1
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check "unknown crit opt" "$ED" "$ROOT/keys/$LOGINUSER-ossh-unkcrit-cert.pub" 1
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check "source-addr match" "$ED" "$ROOT/keys/$LOGINUSER-ossh-srcok-cert.pub" 0
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check "source-addr deny" "$ED" "$ROOT/keys/$LOGINUSER-ossh-srcbad-cert.pub" 1
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check "expired cert" "$ED" "$ROOT/keys/$LOGINUSER-ossh-expired-cert.pub" 1
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force_command_check "$ED" "$ROOT/keys/$LOGINUSER-ossh-forcecmd-cert.pub"
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check "valid cert" "$ED" "$CERTS/$LOGINUSER-ossh-cert.pub" 0
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check "RSA CA" "$ED" "$CERTS/$LOGINUSER-ossh-rsaca-cert.pub" 0
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check "ECDSA CA" "$ED" "$CERTS/$LOGINUSER-ossh-ecdsaca-cert.pub" 0
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check "RSA user key" "$RSA" "$CERTS/$LOGINUSER-ossh-rsauser-cert.pub" 0
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check "ECDSA user key" "$ECC" "$CERTS/$LOGINUSER-ossh-ecdsauser-cert.pub" 0
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check "untrusted CA" "$ED" "$CERTS/$LOGINUSER-ossh-badca-cert.pub" 1
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check "wrong principal" "$ED" "$CERTS/$LOGINUSER-ossh-wrongprincipal-cert.pub" 1
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check "empty principal" "$ED" "$CERTS/$LOGINUSER-ossh-noprincipal-cert.pub" 1
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check "unknown crit opt" "$ED" "$CERTS/$LOGINUSER-ossh-unkcrit-cert.pub" 1
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check "source-addr match" "$ED" "$CERTS/$LOGINUSER-ossh-srcok-cert.pub" 0
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check "source-addr deny" "$ED" "$CERTS/$LOGINUSER-ossh-srcbad-cert.pub" 1
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check "expired cert" "$ED" "$CERTS/$LOGINUSER-ossh-expired-cert.pub" 1
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force_command_check "$ED" "$CERTS/$LOGINUSER-ossh-forcecmd-cert.pub"
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# A force-command must not be bypassed by requesting the SFTP subsystem.
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# "internal-sftp" still permits SFTP; any other force-command denies it.
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if sftp_available; then
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sftp_check "valid cert sftp" "$ED" \
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"$ROOT/keys/$LOGINUSER-ossh-cert.pub" 0
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"$CERTS/$LOGINUSER-ossh-cert.pub" 0
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sftp_check "forcecmd sftp deny" "$ED" \
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"$ROOT/keys/$LOGINUSER-ossh-forcecmd-cert.pub" 1
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"$CERTS/$LOGINUSER-ossh-forcecmd-cert.pub" 1
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sftp_check "internal-sftp sftp" "$ED" \
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"$ROOT/keys/$LOGINUSER-ossh-internalsftp-cert.pub" 0
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"$CERTS/$LOGINUSER-ossh-internalsftp-cert.pub" 0
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# A configured ForceCommand is not a certificate force-command: on its
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# own it must not deny SFTP, and it must not mask one carried by a
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# certificate.
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CONFIG="$WORK/sshd_config_ossh_fc"
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sftp_check "config forcecmd sftp" "$ED" \
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"$ROOT/keys/$LOGINUSER-ossh-cert.pub" 0
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"$CERTS/$LOGINUSER-ossh-cert.pub" 0
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sftp_check "config+cert sftp deny" "$ED" \
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"$ROOT/keys/$LOGINUSER-ossh-forcecmd-cert.pub" 1
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"$CERTS/$LOGINUSER-ossh-forcecmd-cert.pub" 1
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CONFIG="$WORK/sshd_config_ossh"
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else
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echo " (sftp $DRIVER client unavailable, skipping sftp cases)"
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@ -298,11 +306,11 @@ run_suite() { # driver
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# only; the system "scp" uses the SFTP protocol and is covered above.
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if [ "$DRIVER" = client ]; then
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scp_check "valid cert scp" "$ED" \
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"$ROOT/keys/$LOGINUSER-ossh-cert.pub" 0
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"$CERTS/$LOGINUSER-ossh-cert.pub" 0
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scp_check "forcecmd scp deny" "$ED" \
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"$ROOT/keys/$LOGINUSER-ossh-forcecmd-cert.pub" 1
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"$CERTS/$LOGINUSER-ossh-forcecmd-cert.pub" 1
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scp_check "internal-sftp scp" "$ED" \
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"$ROOT/keys/$LOGINUSER-ossh-internalsftp-cert.pub" 1
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"$CERTS/$LOGINUSER-ossh-internalsftp-cert.pub" 1
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fi
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}
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@ -10,6 +10,14 @@ set -e
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USER_NAME=${1:-fred}
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# Where the certificates are written. The keypairs below are committed and
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# shared, but a certificate carries the run that made it -- the force-command
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# one names that run's marker directory -- so two runs writing them here would
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# each authenticate with the other's certificate. The test points this at a
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# per-run directory; the default keeps standalone use writing next to the keys.
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OSSH_CERT_DIR="${OSSH_CERT_DIR:-.}"
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mkdir -p "$OSSH_CERT_DIR"
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# Where the force-command certificate writes. The test overrides this with a
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# per-run temp dir; the fallback is per-process so it is not a shared path.
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OSSH_FORCED_MARKER="${OSSH_FORCED_MARKER:-${TMPDIR:-/tmp}/wolfsshd_ossh_forced_marker.$$}"
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@ -43,7 +51,7 @@ chmod 600 ossh-ca ossh-ca-rsa ossh-ca-ecdsa ossh-bad-ca \
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# gen_cert_u <out-base> <user-pub> <ca-key> <key-id> <principal> [opts...]
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gen_cert_u() {
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out_base=$1; user_pub=$2; ca=$3; key_id=$4; principal=$5
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out_base=$OSSH_CERT_DIR/$1; user_pub=$2; ca=$3; key_id=$4; principal=$5
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shift 5
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cp "$user_pub" "$out_base.pub"
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ssh-keygen -q -s "$ca" -I "$key_id" -n "$principal" -V always:forever \
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@ -65,10 +73,10 @@ gen_cert "$USER_NAME-ossh-badca" ossh-bad-ca "ossh-badca" \
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gen_cert "$USER_NAME-ossh-wrongprincipal" ossh-ca "ossh-wrongprincipal" \
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"other-$USER_NAME"
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# No principals (signed without -n): must not log in, like OpenSSH sshd.
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cp ossh-user.pub "$USER_NAME-ossh-noprincipal.pub"
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cp ossh-user.pub "$OSSH_CERT_DIR/$USER_NAME-ossh-noprincipal.pub"
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ssh-keygen -q -s ossh-ca -I "ossh-noprincipal" -V always:forever \
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"$USER_NAME-ossh-noprincipal.pub"
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rm -f "$USER_NAME-ossh-noprincipal.pub"
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"$OSSH_CERT_DIR/$USER_NAME-ossh-noprincipal.pub"
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rm -f "$OSSH_CERT_DIR/$USER_NAME-ossh-noprincipal.pub"
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# RSA and ECDSA (P-384) CAs cover those CA-signature paths. The user key stays
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# Ed25519, so the ECDSA case also covers taking the digest from the CA curve.
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gen_cert "$USER_NAME-ossh-rsaca" ossh-ca-rsa "ossh-rsaca" \
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