Sync Breeze 13.6.18 - 'Multiple' Unquoted Service Path

vendor:

Sync Breeze Server and Sync Breeze Enterprise

by:

Brian Rodriguez

7,8

CVSS

HIGH

Unquoted Service Path

426

CWE

Product Name: Sync Breeze Server and Sync Breeze Enterprise

Affected Version From: 13.6.18

Affected Version To: 13.6.18

Patch Exists: NO

Related CWE: N/A

CPE: a:sync_breeze:sync_breeze_server:13.6.18

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: Windows 10 Enterprise 64 bits

2021

Sync Breeze 13.6.18 – ‘Multiple’ Unquoted Service Path

Sync Breeze 13.6.18 is vulnerable to Unquoted Service Path vulnerability. This vulnerability can be exploited by an attacker to gain elevated privileges on the system. The vulnerability exists due to the Sync Breeze Server and Sync Breeze Enterprise services not being properly quoted. An attacker can exploit this vulnerability by placing malicious files in the same directory as the service executable and then executing the service.

Mitigation:

Ensure that all services have their paths properly quoted. This can be done by using the sc.exe utility to query and set the service configuration.

Source

Exploit-DB raw data:

# Exploit Title: Sync Breeze 13.6.18 - 'Multiple' Unquoted Service Path
# Discovery by: Brian Rodriguez
# Date: 16-06-2021
# Vendor Homepage: https://www.syncbreeze.com/
# Software Links:
# https://www.syncbreeze.com/setups_x64/syncbreezesrv_setup_v13.6.18_x64.exe
# https://www.syncbreeze.com/setups_x64/syncbreezeent_setup_v13.6.18_x64.exe
# Tested Version: 13.6.18
# Vulnerability Type: Unquoted Service Path
# Tested on: Windows 10 Enterprise 64 bits

# Step to discover Unquoted Service Path:

C:\>wmic service get name,displayname,pathname,startmode |findstr /i "auto"
|findstr /i /v "c:\windows\\" |findstr /i /v """

Sync Breeze Server  Sync Breeze Server   C:\Program Files\Sync Breeze
Server\bin\syncbrs.exe     Auto
Sync Breeze Enterprise   Sync Breeze Enterprise   C:\Program Files\Sync
Breeze Enterprise\bin\syncbrs.exe   Auto

C:\Users\IEUser>sc qc "Sync Breeze Server"
[SC] QueryServiceConfig CORRECTO

NOMBRE_SERVICIO: Sync Breeze Server
        TIPO               : 10  WIN32_OWN_PROCESS
        TIPO_INICIO        : 2   AUTO_START
        CONTROL_ERROR      : 0   IGNORE
        NOMBRE_RUTA_BINARIO: C:\Program Files\Sync Breeze
Server\bin\syncbrs.exe
        GRUPO_ORDEN_CARGA  :
        ETIQUETA           : 0
        NOMBRE_MOSTRAR     : Sync Breeze Server
        DEPENDENCIAS       :
        NOMBRE_INICIO_SERVICIO: LocalSystem

C:\Users\IEUser>sc qc "Sync Breeze Enterprise"
[SC] QueryServiceConfig CORRECTO

NOMBRE_SERVICIO: Sync Breeze Enterprise
        TIPO               : 10  WIN32_OWN_PROCESS
        TIPO_INICIO        : 2   AUTO_START
        CONTROL_ERROR      : 0   IGNORE
        NOMBRE_RUTA_BINARIO: C:\Program Files\Sync Breeze
Enterprise\bin\syncbrs.exe
        GRUPO_ORDEN_CARGA  :
        ETIQUETA           : 0
        NOMBRE_MOSTRAR     : Sync Breeze Enterprise
        DEPENDENCIAS       :
        NOMBRE_INICIO_SERVICIO: LocalSystem