mirror of https://github.com/jtesta/ssh-audit.git
45 lines
2.0 KiB
Python
45 lines
2.0 KiB
Python
import os
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import pytest
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from ssh_audit.outputbuffer import OutputBuffer
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from ssh_audit.ssh2_kex import SSH2_Kex
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from ssh_audit.ssh2_kexparty import SSH2_KexParty
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@pytest.fixture
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def kex(ssh_audit):
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kex_algs, key_algs = [], []
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enc, mac, compression, languages = [], [], ['none'], []
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cli = SSH2_KexParty(enc, mac, compression, languages)
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enc, mac, compression, languages = [], [], ['none'], []
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srv = SSH2_KexParty(enc, mac, compression, languages)
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cookie = os.urandom(16)
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kex = SSH2_Kex(OutputBuffer, cookie, kex_algs, key_algs, cli, srv, 0)
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return kex
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def test_prevent_runtime_error_regression(ssh_audit, kex):
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"""Prevent a regression of https://github.com/jtesta/ssh-audit/issues/41
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The following test setup does not contain any sensible data.
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It was made up to reproduce a situation when there are several host
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keys, and an error occurred when iterating and modifying them at the
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same time.
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"""
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kex.set_host_key("ssh-rsa", b"\x00\x00\x00\x07ssh-rsa\x00\x00\x00", 1024, '', 0)
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kex.set_host_key("ssh-rsa1", b"\x00\x00\x00\x07ssh-rsa\x00\x00\x00", 1024, '', 0)
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kex.set_host_key("ssh-rsa2", b"\x00\x00\x00\x07ssh-rsa\x00\x00\x00", 1024, '', 0)
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kex.set_host_key("ssh-rsa3", b"\x00\x00\x00\x07ssh-rsa\x00\x00\x00", 1024, '', 0)
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kex.set_host_key("ssh-rsa4", b"\x00\x00\x00\x07ssh-rsa\x00\x00\x00", 1024, '', 0)
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kex.set_host_key("ssh-rsa5", b"\x00\x00\x00\x07ssh-rsa\x00\x00\x00", 1024, '', 0)
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kex.set_host_key("ssh-rsa6", b"\x00\x00\x00\x07ssh-rsa\x00\x00\x00", 1024, '', 0)
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kex.set_host_key("ssh-rsa7", b"\x00\x00\x00\x07ssh-rsa\x00\x00\x00", 1024, '', 0)
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kex.set_host_key("ssh-rsa8", b"\x00\x00\x00\x07ssh-rsa\x00\x00\x00", 1024, '', 0)
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rv = ssh_audit.build_struct('localhost', None, kex=kex)
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assert len(rv["fingerprints"]) == (9 * 2) # Each host key generates two hash fingerprints: one using SHA256, and one using MD5.
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for key in ['banner', 'compression', 'enc', 'fingerprints', 'kex', 'key', 'mac']:
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assert key in rv
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