// For flags

CVE-2022-47631

Razer Synapse Race Condition / DLL Hijacking

Severity Score

7.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

3
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Razer Synapse through 3.7.1209.121307 allows privilege escalation due to an unsafe installation path and improper privilege management. Attackers can place DLLs into %PROGRAMDATA%\Razer\Synapse3\Service\bin if they do so before the service is installed and if they deny write access for the SYSTEM user. Although the service will not start if it detects malicious DLLs in this directory, attackers can exploit a race condition and replace a valid DLL (i.e., a copy of a legitimate Razer DLL) with a malicious DLL after the service has already checked the file. As a result, local Windows users can abuse the Razer driver installer to obtain administrative privileges on Windows.

Razer Synapse hasta 3.7.1209.121307 permite la escalada de privilegios debido a una ruta de instalación insegura y una gestión de privilegios inadecuada. Los atacantes pueden colocar archivos DLL en %PROGRAMDATA%\Razer\Synapse3\Service\bin si lo hacen antes de que se instale el servicio y si niegan el acceso de escritura al usuario SISTEMA. Aunque el servicio no se iniciará si detecta archivos DLL maliciosos en este directorio, los atacantes pueden aprovechar una condición de ejecución y reemplazar un DLL válido (es decir, una copia de una DLL legítimo de Razer) con una DLL malicioso después de que el servicio ya haya verificado el archivo. Como resultado, los usuarios locales de Windows pueden abusar del instalador del controlador Razer para obtener privilegios administrativos en Windows.

Razer Synapse versions before 3.8.0428.042117 (20230601) suffer from multiple vulnerabilities. Due to an unsafe installation path, improper privilege management, and a time-of-check time-of-use race condition, the associated system service "Razer Synapse Service" is vulnerable to DLL hijacking. As a result, local Windows users can abuse the Razer driver installer to obtain administrative privileges on Windows.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-12-20 CVE Reserved
  • 2023-09-14 CVE Published
  • 2024-08-03 CVE Updated
  • 2024-08-03 First Exploit
  • 2024-09-20 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Razer
Search vendor "Razer"
 Synapse
Search vendor "Razer" for product "Synapse"
 < 3.8.0428.042117
Search vendor "Razer" for product "Synapse" and version " < 3.8.0428.042117"
-
Affected
in Microsoft
Search vendor "Microsoft"
 Windows
Search vendor "Microsoft" for product "Windows"
--
Safe