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[0;36m# general [0m
[0;32m(gen) banner: SSH-2.0-OpenSSH_8.0 [0m
[0;32m(gen) software: OpenSSH 8.0 [0m
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[0;32m(gen) compatibility: OpenSSH 7.4+, Dropbear SSH 2020.79+ [0m
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[0;32m(gen) compression: enabled (zlib@openssh.com) [0m
2022-02-22 03:48:10 +01:00
[0;36m# security [0m
[0;33m(cve) CVE-2021-41617 -- (CVSSv2: 7.0) privilege escalation via supplemental groups [0m
[0;33m(cve) CVE-2020-15778 -- (CVSSv2: 7.8) command injection via anomalous argument transfers [0m
[0;33m(cve) CVE-2019-16905 -- (CVSSv2: 7.8) memory corruption and local code execution via pre-authentication integer overflow [0m
[0;33m(cve) CVE-2016-20012 -- (CVSSv2: 5.3) enumerate usernames via challenge response [0m
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[0;36m# key exchange algorithms [0m
2019-10-21 17:50:23 +02:00
[0;32m(kex) curve25519-sha256 -- [info] available since OpenSSH 7.4, Dropbear SSH 2018.76 [0m
2024-03-15 22:24:21 +01:00
[0;32m `- [info] default key exchange from OpenSSH 6.4 to 8.9 [0m
2023-03-24 02:36:02 +01:00
[0;32m(kex) curve25519-sha256@libssh.org -- [info] available since OpenSSH 6.4, Dropbear SSH 2013.62 [0m
2024-03-15 22:24:21 +01:00
[0;32m `- [info] default key exchange from OpenSSH 6.4 to 8.9 [0m
2023-09-03 22:13:00 +02:00
[0;32m(kex) diffie-hellman-group-exchange-sha256 (4096-bit) -- [info] available since OpenSSH 4.4 [0m
2023-09-04 01:14:25 +02:00
[0;32m `- [info] OpenSSH's GEX fallback mechanism was triggered during testing. Very old SSH clients will still be able to create connections using a 2048-bit modulus, though modern clients will use 4096. This can only be disabled by recompiling the code (see https://github.com/openssh/openssh-portable/blob/V_9_4/dh.c#L477). [0m
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[0;36m# host-key algorithms [0m
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[0;32m(key) ssh-ed25519 -- [info] available since OpenSSH 6.5, Dropbear SSH 2020.79 [0m
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[0;36m# encryption algorithms (ciphers) [0m
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[0;33m(enc) chacha20-poly1305@openssh.com -- [warn] vulnerable to the Terrapin attack (CVE-2023-48795), allowing message prefix truncation [0m
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`- [info] available since OpenSSH 6.5, Dropbear SSH 2020.79
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`- [info] default cipher since OpenSSH 6.9
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[0;32m(enc) aes256-gcm@openssh.com -- [info] available since OpenSSH 6.2 [0m
[0;32m(enc) aes128-gcm@openssh.com -- [info] available since OpenSSH 6.2 [0m
[0;32m(enc) aes256-ctr -- [info] available since OpenSSH 3.7, Dropbear SSH 0.52 [0m
[0;32m(enc) aes192-ctr -- [info] available since OpenSSH 3.7 [0m
[0;32m(enc) aes128-ctr -- [info] available since OpenSSH 3.7, Dropbear SSH 0.52 [0m
[0;36m# message authentication code algorithms [0m
[0;32m(mac) hmac-sha2-256-etm@openssh.com -- [info] available since OpenSSH 6.2 [0m
[0;32m(mac) hmac-sha2-512-etm@openssh.com -- [info] available since OpenSSH 6.2 [0m
[0;32m(mac) umac-128-etm@openssh.com -- [info] available since OpenSSH 6.2 [0m
[0;36m# fingerprints [0m
[0;32m(fin) ssh-ed25519: SHA256:UrnXIVH+7dlw8UqYocl48yUEcKrthGDQG2CPCgp7MxU [0m
[0;36m# algorithm recommendations (for OpenSSH 8.0) [0m
[0;32m(rec) +diffie-hellman-group16-sha512 -- kex algorithm to append [0m
[0;32m(rec) +diffie-hellman-group18-sha512 -- kex algorithm to append [0m
[0;32m(rec) +rsa-sha2-256 -- key algorithm to append [0m
[0;32m(rec) +rsa-sha2-512 -- key algorithm to append [0m
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[0;33m(rec) -chacha20-poly1305@openssh.com -- enc algorithm to remove [0m
[0;36m# additional info [0m
[0;33m(nfo) For hardening guides on common OSes, please see: <https://www.ssh-audit.com/hardening_guides.html> [0m
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