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Added note that when a target is properly configured against the Terrapin vulnerability that unpatched peers may still create vulnerable connections. Updated Ubuntu Server & Client 20.04 & 22.04 policies to include new key exchange markers related to Terrapin counter-measures.

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Joe Testa
2023-12-19 14:03:28 -05:00
parent 8e972c5e94
commit c259a83782
16 changed files with 183 additions and 56 deletions
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6
docker_test.sh
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@ -746,7 +746,7 @@ run_openssh_test "5.6p1" "test5" "${PROGRAM_RETVAL_FAILURE}"
echo
run_openssh_test "8.0p1" "test1" "${PROGRAM_RETVAL_FAILURE}"
run_openssh_test "8.0p1" "test2" "${PROGRAM_RETVAL_FAILURE}"
run_openssh_test "8.0p1" "test3" "${PROGRAM_RETVAL_GOOD}"
run_openssh_test "8.0p1" "test3" "${PROGRAM_RETVAL_WARNING}"
echo
run_dropbear_test "2019.78" "test1" "-r /etc/dropbear/dropbear_rsa_host_key_1024 -r /etc/dropbear/dropbear_dss_host_key -r /etc/dropbear/dropbear_ecdsa_host_key" 3
echo
@ -785,10 +785,10 @@ run_custom_policy_test "config2" "test13" "${PROGRAM_RETVAL_GOOD}"
run_custom_policy_test "config2" "test14" "${PROGRAM_RETVAL_FAILURE}"
# Failing test for built-in OpenSSH 8.0p1 server policy (RSA host key size is 3072 instead of 4096).
run_builtin_policy_test "Hardened OpenSSH Server v8.0 (version 3)" "8.0p1" "test1" "-o HostKeyAlgorithms=rsa-sha2-512,rsa-sha2-256,ssh-ed25519 -o KexAlgorithms=curve25519-sha256,curve25519-sha256@libssh.org,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256 -o Ciphers=chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr -o MACs=hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,umac-128-etm@openssh.com" "${PROGRAM_RETVAL_FAILURE}"
run_builtin_policy_test "Hardened OpenSSH Server v8.0 (version 4)" "8.0p1" "test1" "-o HostKeyAlgorithms=rsa-sha2-512,rsa-sha2-256,ssh-ed25519 -o KexAlgorithms=curve25519-sha256,curve25519-sha256@libssh.org,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256 -o Ciphers=chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr -o MACs=hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,umac-128-etm@openssh.com" "${PROGRAM_RETVAL_FAILURE}"
# Failing test for built-in OpenSSH 8.0p1 server policy (MACs not hardened).
run_builtin_policy_test "Hardened OpenSSH Server v8.0 (version 3)" "8.0p1" "test2" "-o HostKeyAlgorithms=rsa-sha2-512,rsa-sha2-256,ssh-ed25519 -o KexAlgorithms=curve25519-sha256,curve25519-sha256@libssh.org,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256 -o Ciphers=chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr" "${PROGRAM_RETVAL_FAILURE}"
run_builtin_policy_test "Hardened OpenSSH Server v8.0 (version 4)" "8.0p1" "test2" "-o HostKeyAlgorithms=rsa-sha2-512,rsa-sha2-256,ssh-ed25519 -o KexAlgorithms=curve25519-sha256,curve25519-sha256@libssh.org,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256 -o Ciphers=chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr" "${PROGRAM_RETVAL_FAILURE}"
if [[ $num_failures == 0 ]]; then