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Differentiate between server and client security issues. Ignore client-side.

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This commit is contained in:
Andris Raugulis 2016-09-13 13:01:38 +03:00
parent 4479db966a
commit e3559a76b8
1 changed files with 26 additions and 29 deletions
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55
ssh-audit.py
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@ -434,20 +434,20 @@ class SSH(object):
class Security(object):
CVE = {
'Dropbear SSH': [
['0.44', '2015.71', 'CVE-2016-3116', 5.5, 'bypass command restrictions via xauth command injection.'],
['0.28', '2013.58', 'CVE-2013-4434', 5.0, 'discover valid usernames through different time delays.'],
['0.28', '2013.58', 'CVE-2013-4421', 5.0, 'cause DoS (memory consumption) via a compressed packet.'],
['0.52', '2011.54', 'CVE-2012-0920', 7.1, 'execute arbitrary code or bypass command restrictions.'],
['0.40', '0.48.1', 'CVE-2007-1099', 7.5, 'conduct a MitM attack (no warning for hostkey mismatch).'],
['0.28', '0.47', 'CVE-2006-1206', 7.5, 'cause DoS (slot exhaustion) via large number of connections.'],
['0.39', '0.47', 'CVE-2006-0225', 4.6, 'execute arbitrary commands via scp with crafted filenames.'],
['0.28', '0.46', 'CVE-2005-4178', 6.5, 'execute arbitrary code via buffer overflow vulnerability.'],
['0.28', '0.42', 'CVE-2004-2486', 7.5, 'execute arbitrary code via DSS verification code.'],
['0.44', '2015.71', 1, 'CVE-2016-3116', 5.5, 'bypass command restrictions via xauth command injection.'],
['0.28', '2013.58', 1, 'CVE-2013-4434', 5.0, 'discover valid usernames through different time delays.'],
['0.28', '2013.58', 1, 'CVE-2013-4421', 5.0, 'cause DoS (memory consumption) via a compressed packet.'],
['0.52', '2011.54', 1, 'CVE-2012-0920', 7.1, 'execute arbitrary code or bypass command restrictions.'],
['0.40', '0.48.1', 1, 'CVE-2007-1099', 7.5, 'conduct a MitM attack (no warning for hostkey mismatch).'],
['0.28', '0.47', 1, 'CVE-2006-1206', 7.5, 'cause DoS (slot exhaustion) via large number of connections.'],
['0.39', '0.47', 1, 'CVE-2006-0225', 4.6, 'execute arbitrary commands via scp with crafted filenames.'],
['0.28', '0.46', 1, 'CVE-2005-4178', 6.5, 'execute arbitrary code via buffer overflow vulnerability.'],
['0.28', '0.42', 1, 'CVE-2004-2486', 7.5, 'execute arbitrary code via DSS verification code.'],
]
}
TXT = {
'Dropbear SSH': [
['0.28', '0.34', 'remote root exploit', 'remote format string buffer overflow exploit (exploit-db#387).'],
['0.28', '0.34', 1, 'remote root exploit', 'remote format string buffer overflow exploit (exploit-db#387).'],
]
}
@ -865,35 +865,32 @@ def output_compatibility(kex, client=False):
out.good('(gen) compatibility: ' + ', '.join(comp_text))
def output_security_cve(software, padlen):
if software is None or software.product not in SSH.Security.CVE:
def output_security_sub(sub, software, padlen):
secdb = SSH.Security.CVE if sub == 'cve' else SSH.Security.TXT
if software is None or software.product not in secdb:
return
for line in SSH.Security.CVE[software.product]:
for line in secdb[software.product]:
vfrom, vtill = line[0:2]
if not software.between_versions(vfrom, vtill):
continue
cve, cvss, descr = line[2:5]
padding = '' if out.batch else ' ' * (padlen - len(cve))
out.fail('(cve) {0}{1} -- ({2}) {3}'.format(cve, padding, cvss, descr))
def output_security_txt(software, padlen):
if software is None or software.product not in SSH.Security.TXT:
return
for line in SSH.Security.TXT[software.product]:
vfrom, vtill = line[0:2]
if not software.between_versions(vfrom, vtill):
target, name = line[2:4]
is_server, is_client = target & 1 == 1, target & 2 == 2
if is_client:
continue
head, descr = line[2:4]
padding = '' if out.batch else ' ' * (padlen - len(head))
out.fail('(sec) {0}{1} -- {2}'.format(head, padding, descr))
p = '' if out.batch else ' ' * (padlen - len(name))
if sub == 'cve':
cvss, descr = line[4:6]
out.fail('(cve) {0}{1} -- ({2}) {3}'.format(name, p, cvss, descr))
else:
descr = line[4]
out.fail('(sec) {0}{1} -- {2}'.format(name, p, descr))
def output_security(banner, padlen):
with OutputBuffer() as obuf:
software = SSH.Software.parse(banner)
output_security_cve(software, padlen)
output_security_txt(software, padlen)
output_security_sub('cve', software, padlen)
output_security_sub('txt', software, padlen)
if len(obuf) > 0:
out.head('# security')
obuf.flush()