mirror of https://github.com/jtesta/ssh-audit.git
228 lines
8.7 KiB
Python
228 lines
8.7 KiB
Python
"""
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The MIT License (MIT)
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Copyright (C) 2017 Andris Raugulis (moo@arthepsy.eu)
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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"""
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import re
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# pylint: disable=unused-import
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from typing import Dict, List, Set, Sequence, Tuple, Iterable # noqa: F401
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from typing import Callable, Optional, Union, Any # noqa: F401
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from ssh_audit.banner import Banner
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from ssh_audit.product import Product
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class Software:
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def __init__(self, vendor: Optional[str], product: str, version: str, patch: Optional[str], os_version: Optional[str]) -> None:
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self.__vendor = vendor
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self.__product = product
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self.__version = version
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self.__patch = patch
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self.__os = os_version
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@property
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def vendor(self) -> Optional[str]:
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return self.__vendor
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@property
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def product(self) -> str:
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return self.__product
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@property
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def version(self) -> str:
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return self.__version
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@property
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def patch(self) -> Optional[str]:
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return self.__patch
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@property
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def os(self) -> Optional[str]:
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return self.__os
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def compare_version(self, other: Union[None, 'Software', str]) -> int:
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# pylint: disable=too-many-branches,too-many-return-statements
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if other is None:
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return 1
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if isinstance(other, Software):
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other = '{}{}'.format(other.version, other.patch or '')
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else:
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other = str(other)
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mx = re.match(r'^([\d\.]+\d+)(.*)$', other)
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if mx is not None:
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oversion, opatch = mx.group(1), mx.group(2).strip()
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else:
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oversion, opatch = other, ''
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if self.version < oversion:
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return -1
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elif self.version > oversion:
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return 1
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spatch = self.patch or ''
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if self.product == Product.DropbearSSH:
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if not re.match(r'^test\d.*$', opatch):
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opatch = 'z{}'.format(opatch)
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if not re.match(r'^test\d.*$', spatch):
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spatch = 'z{}'.format(spatch)
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elif self.product == Product.OpenSSH:
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mx1 = re.match(r'^p(\d).*', opatch)
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mx2 = re.match(r'^p(\d).*', spatch)
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if not (bool(mx1) and bool(mx2)):
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if mx1 is not None:
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opatch = mx1.group(1)
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if mx2 is not None:
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spatch = mx2.group(1)
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# OpenBSD version and p1 versions are considered the same.
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if ((spatch == '') and (opatch == '1')) or ((spatch == '1') and (opatch == '')):
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return 0
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if spatch < opatch:
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return -1
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elif spatch > opatch:
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return 1
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return 0
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def between_versions(self, vfrom: str, vtill: str) -> bool:
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if bool(vfrom) and self.compare_version(vfrom) < 0:
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return False
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if bool(vtill) and self.compare_version(vtill) > 0:
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return False
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return True
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def display(self, full: bool = True) -> str:
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r = '{} '.format(self.vendor) if bool(self.vendor) else ''
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r += self.product
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if bool(self.version):
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r += ' {}'.format(self.version)
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if full:
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patch = self.patch or ''
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if self.product == Product.OpenSSH:
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mx = re.match(r'^(p\d)(.*)$', patch)
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if mx is not None:
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r += mx.group(1)
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patch = mx.group(2).strip()
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if bool(patch):
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r += ' ({})'.format(patch)
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if bool(self.os):
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r += ' running on {}'.format(self.os)
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return r
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def __str__(self) -> str:
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return self.display()
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def __repr__(self) -> str:
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r = 'vendor={}, '.format(self.vendor) if bool(self.vendor) else ''
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r += 'product={}'.format(self.product)
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if bool(self.version):
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r += ', version={}'.format(self.version)
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if bool(self.patch):
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r += ', patch={}'.format(self.patch)
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if bool(self.os):
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r += ', os={}'.format(self.os)
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return '<{}({})>'.format(self.__class__.__name__, r)
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@staticmethod
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def _fix_patch(patch: str) -> Optional[str]:
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return re.sub(r'^[-_\.]+', '', patch) or None
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@staticmethod
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def _fix_date(d: Optional[str]) -> Optional[str]:
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if d is not None and len(d) == 8:
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return '{}-{}-{}'.format(d[:4], d[4:6], d[6:8])
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else:
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return None
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@classmethod
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def _extract_os_version(cls, c: Optional[str]) -> Optional[str]:
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if c is None:
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return None
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mx = re.match(r'^NetBSD(?:_Secure_Shell)?(?:[\s-]+(\d{8})(.*))?$', c)
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if mx is not None:
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d = cls._fix_date(mx.group(1))
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return 'NetBSD' if d is None else 'NetBSD ({})'.format(d)
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mx = re.match(r'^FreeBSD(?:\slocalisations)?[\s-]+(\d{8})(.*)$', c)
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if not bool(mx):
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mx = re.match(r'^[^@]+@FreeBSD\.org[\s-]+(\d{8})(.*)$', c)
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if mx is not None:
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d = cls._fix_date(mx.group(1))
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return 'FreeBSD' if d is None else 'FreeBSD ({})'.format(d)
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w = ['RemotelyAnywhere', 'DesktopAuthority', 'RemoteSupportManager']
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for win_soft in w:
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mx = re.match(r'^in ' + win_soft + r' ([\d\.]+\d)$', c)
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if mx is not None:
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ver = mx.group(1)
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return 'Microsoft Windows ({} {})'.format(win_soft, ver)
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generic = ['NetBSD', 'FreeBSD']
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for g in generic:
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if c.startswith(g) or c.endswith(g):
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return g
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return None
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@classmethod
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def parse(cls, banner: 'Banner') -> Optional['Software']:
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# pylint: disable=too-many-return-statements
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software = str(banner.software)
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mx = re.match(r'^dropbear_([\d\.]+\d+)(.*)', software)
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v: Optional[str] = None
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if mx is not None:
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patch = cls._fix_patch(mx.group(2))
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v, p = 'Matt Johnston', Product.DropbearSSH
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v = None
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return cls(v, p, mx.group(1), patch, None)
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mx = re.match(r'^OpenSSH[_\.-]+([\d\.]+\d+)(.*)', software)
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if mx is not None:
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patch = cls._fix_patch(mx.group(2))
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v, p = 'OpenBSD', Product.OpenSSH
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v = None
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os_version = cls._extract_os_version(banner.comments)
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return cls(v, p, mx.group(1), patch, os_version)
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mx = re.match(r'^libssh-([\d\.]+\d+)(.*)', software)
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if mx is not None:
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patch = cls._fix_patch(mx.group(2))
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v, p = None, Product.LibSSH
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os_version = cls._extract_os_version(banner.comments)
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return cls(v, p, mx.group(1), patch, os_version)
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mx = re.match(r'^libssh_([\d\.]+\d+)(.*)', software)
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if mx is not None:
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patch = cls._fix_patch(mx.group(2))
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v, p = None, Product.LibSSH
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os_version = cls._extract_os_version(banner.comments)
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return cls(v, p, mx.group(1), patch, os_version)
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mx = re.match(r'^RomSShell_([\d\.]+\d+)(.*)', software)
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if mx is not None:
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patch = cls._fix_patch(mx.group(2))
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v, p = 'Allegro Software', 'RomSShell'
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return cls(v, p, mx.group(1), patch, None)
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mx = re.match(r'^mpSSH_([\d\.]+\d+)', software)
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if mx is not None:
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v, p = 'HP', 'iLO (Integrated Lights-Out) sshd'
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return cls(v, p, mx.group(1), None, None)
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mx = re.match(r'^Cisco-([\d\.]+\d+)', software)
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if mx is not None:
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v, p = 'Cisco', 'IOS/PIX sshd'
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return cls(v, p, mx.group(1), None, None)
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mx = re.match(r'^tinyssh_(.*)', software)
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if mx is not None:
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return cls(None, Product.TinySSH, mx.group(1), None, None)
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mx = re.match(r'^PuTTY_Release_(.*)', software)
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if mx:
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return cls(None, Product.PuTTY, mx.group(1), None, None)
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return None
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