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https://github.com/jtesta/ssh-audit.git
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Create security section. Add CVE for Dropbear SSH.
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parent
13d945d8df
commit
243e4db74f
58
ssh-audit.py
58
ssh-audit.py
@ -242,6 +242,13 @@ class SSH(object):
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def os(self):
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def os(self):
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return self.__os
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return self.__os
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def version_between(self, vfrom, vtill):
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if vfrom and vfrom > self.version:
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return False
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if vtill and vtill < self.version:
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return False
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return True
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def __str__(self):
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def __str__(self):
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out = '{0} '.format(self.vendor) if self.vendor else ''
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out = '{0} '.format(self.vendor) if self.vendor else ''
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out += self.product
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out += self.product
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@ -386,6 +393,21 @@ class SSH(object):
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comments = (mx.group(4) or '').strip() or None
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comments = (mx.group(4) or '').strip() or None
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return cls(protocol, software, comments)
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return cls(protocol, software, comments)
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class Security(object):
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CVE = {
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'Dropbear SSH': [
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['0.44', '2015.71', 'CVE-2016-3116', 5.5, 'bypass command restrictions via xauth command injection.'],
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['0.28', '2013.58', 'CVE-2013-4434', 5.0, 'discover valid usernames through different time delays.'],
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['0.28', '2013.58', 'CVE-2013-4421', 5.0, 'cause DoS (memory consumption) via a compressed packet.'],
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['0.52', '2011.54', 'CVE-2012-0920', 7.1, 'execute arbitrary code or bypass command restrictions.'],
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['0.40', '0.48.1', 'CVE-2007-1099', 7.5, 'conduct a MitM attack (no warning for hostkey mismatch).'],
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['0.28', '0.47', 'CVE-2006-1206', 7.5, 'cause DoS (slot exhaustion) via large number of connections.'],
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['0.39', '0.47', 'CVE-2006-0225', 4.6, 'execute arbitrary commands via scp with crafted filenames.'],
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['0.28', '0.46', 'CVE-2005-4178', 6.5, 'execute arbitrary code via buffer overflow vulnerability.'],
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['0.28', '0.42', 'CVE-2004-2486', 7.5, 'execute arbitrary code via DSS verification code.'],
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]
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}
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class Socket(ReadBuf, WriteBuf):
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class Socket(ReadBuf, WriteBuf):
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SM_BANNER_SENT = 1
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SM_BANNER_SENT = 1
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@ -800,6 +822,28 @@ def output_compatibility(kex, client=False):
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out.good('(gen) compatibility: ' + ', '.join(comp_text))
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out.good('(gen) compatibility: ' + ', '.join(comp_text))
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def output_security_cve(software, padlen):
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if software is None or software.product not in SSH.Security.CVE:
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return
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for line in SSH.Security.CVE[software.product]:
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vfrom, vtill = line[0:2]
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if not software.version_between(vfrom, vtill):
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continue
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cve, cvss, descr = line[2:5]
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padding = ' ' * (padlen - len(cve))
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out.fail('(cve) {0}{1} -- ({2}) {3}'.format(cve, padding, cvss, descr))
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def output_security(banner, padlen):
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with OutputBuffer() as obuf:
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software = SSH.Software.parse(banner)
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output_security_cve(software, padlen)
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if len(obuf) > 0:
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out.head('# security')
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obuf.flush()
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out.sep()
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def output(banner, header, kex):
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def output(banner, header, kex):
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with OutputBuffer() as obuf:
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with OutputBuffer() as obuf:
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if len(header) > 0:
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if len(header) > 0:
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@ -823,13 +867,17 @@ def output(banner, header, kex):
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out.head('# general')
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out.head('# general')
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obuf.flush()
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obuf.flush()
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out.sep()
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out.sep()
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if kex is not None:
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ml = lambda l: max(len(i) for i in l)
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maxlen = max(ml(kex.kex_algorithms),
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ml(kex.key_algorithms),
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ml(kex.server.encryption),
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ml(kex.server.mac))
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else:
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maxlen = 0
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output_security(banner, maxlen)
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if kex is None:
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if kex is None:
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return
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return
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ml = lambda l: max(len(i) for i in l)
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maxlen = max(ml(kex.kex_algorithms),
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ml(kex.key_algorithms),
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ml(kex.server.encryption),
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ml(kex.server.mac))
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title, alg_type = 'key exchange algorithms', 'kex'
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title, alg_type = 'key exchange algorithms', 'kex'
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output_algorithms(title, alg_type, kex.kex_algorithms, maxlen)
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output_algorithms(title, alg_type, kex.kex_algorithms, maxlen)
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title, alg_type = 'host-key algorithms', 'key'
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title, alg_type = 'host-key algorithms', 'key'
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