CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
AI Score
Confidence
High
EPSS
Percentile
78.2%
# Exploit Title: Wondershare UBackit 2.0.5 - 'wsbackup' Unquoted Service Path
# Discovery by: Luis Martinez
# Vendor Homepage: https://www.wondershare.com/
# Software Link : https://download.wondershare.com/ubackit_full8767.exe
# Tested Version: 2.0.5
# 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 "wsbackup" | findstr /i /v """
Wondershare wsbackup Service wsbackup C:\Program Files\Wondershare\Wondershare UBackit\wsbackup.exe Auto
# Service info:
C:\>sc qc wsbackup
[SC] QueryServiceConfig SUCCESS
SERVICE_NAME: wsbackup
TYPE : 10 WIN32_OWN_PROCESS
START_TYPE : 2 AUTO_START
ERROR_CONTROL : 1 NORMAL
BINARY_PATH_NAME : C:\Program Files\Wondershare\Wondershare UBackit\wsbackup.exe
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : Wondershare wsbackup Service
DEPENDENCIES :
SERVICE_START_NAME : LocalSystem
#Exploit:
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.
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
AI Score
Confidence
High
EPSS
Percentile
78.2%