CVE-2022-47631 – CVE-2022-47631 is a local privilege escalation ... (How to Fix)

Q: What is the severity of CVE-2022-47631?

CVE-2022-47631 has a CVSS score of 7.8 (HIGH). CVE-2022-47631 is a local privilege escalation vulnerability in Razer Synapse software that allows attackers to gain administrative privileges on Windows systems. It exploits a race condition in DLL loading during service installation. This affects Windows users with Razer Synapse installed.

📋 TL;DR

CVE-2022-47631 is a local privilege escalation vulnerability in Razer Synapse software that allows attackers to gain administrative privileges on Windows systems. It exploits a race condition in DLL loading during service installation. This affects Windows users with Razer Synapse installed.

💻 Affected Systems

Products:

Razer Synapse

Versions: Through 3.7.1209.121307

Operating Systems: Windows

Default Config Vulnerable: ⚠️ Yes

Notes: Requires Razer Synapse service installation and local access to the system. The vulnerability exists in the installation process and DLL loading mechanism.

📦 What is this software?

Synapse by Razer

View all CVEs affecting Synapse →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Local attackers gain full SYSTEM/administrator privileges, enabling complete system compromise, data theft, persistence, and lateral movement.

🟠

Likely Case

Malicious local users or malware escalate privileges to install additional payloads, bypass security controls, or maintain persistence.

🟢

If Mitigated

With proper access controls and monitoring, impact is limited to failed exploitation attempts that can be detected and investigated.

🌐 Internet-Facing: LOW - This is a local privilege escalation requiring local access; not directly exploitable over the network.

🏢 Internal Only: HIGH - Any local user (including low-privileged accounts) can potentially exploit this to gain administrative privileges on affected systems.

🎯 Exploit Status

Public PoC: ⚠️ Yes

Weaponized: LIKELY

Unauthenticated Exploit: ✅ No

Complexity: MEDIUM

Exploitation requires local access and timing precision for the race condition. Public proof-of-concept details exist in security advisories.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Versions after 3.7.1209.121307

Vendor Advisory: https://www.razer.com/security-advisory

Restart Required: Yes

Instructions:

1. Open Razer Synapse. 2. Check for updates in settings. 3. Install latest version. 4. Restart system. 5. Verify version is newer than 3.7.1209.121307.

🔧 Temporary Workarounds

Restrict access to Razer Synapse directories

windows

Set strict permissions on %PROGRAMDATA%\Razer\Synapse3\Service\bin to prevent unauthorized DLL placement

icacls "%PROGRAMDATA%\Razer\Synapse3\Service\bin" /deny Everyone:(OI)(CI)(W)

Disable Razer Synapse service

windows

Temporarily disable the Razer Synapse service if not needed

sc config "Razer Synapse Service" start= disabled
sc stop "Razer Synapse Service"

🧯 If You Can't Patch

Remove Razer Synapse software entirely if not required
Implement strict endpoint detection and monitoring for DLL hijacking attempts in Razer directories

🔍 How to Verify

Check if Vulnerable:

Check Razer Synapse version in Settings > About. If version is 3.7.1209.121307 or earlier, system is vulnerable.

Check Version:

wmic product where "name like 'Razer Synapse%'" get version

Verify Fix Applied:

Verify Razer Synapse version is newer than 3.7.1209.121307 and test that unauthorized DLLs cannot be placed in %PROGRAMDATA%\Razer\Synapse3\Service\bin

📡 Detection & Monitoring

Log Indicators:

Windows Event Logs showing DLL loading failures from Razer directories
Process creation events for RazerSynapseService.exe with suspicious parent processes
File creation/modification events in %PROGRAMDATA%\Razer\Synapse3\Service\bin

Network Indicators:

No direct network indicators - this is a local privilege escalation

SIEM Query:

source="Windows Security" AND (event_id=4688 AND process_name="RazerSynapseService.exe") OR (event_id=4663 AND object_name="*Razer*Synapse3*Service*bin*")

📊 Metadata

CVE ID: CVE-2022-47631

CVSS v3 Score: 7.8 (HIGH)

CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

CWE: CWE-367

Published: September 14, 2023

Last Updated: November 21, 2024

🔗 References

http://packetstormsecurity.com/files/174696/Razer-Synapse-Race-Condition-DLL-Hijacking.html Exploit,Third Party Advisory,VDB Entry
http://seclists.org/fulldisclosure/2023/Sep/6 Exploit,Mailing List,Third Party Advisory
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2023-002.txt Exploit,Third Party Advisory
http://packetstormsecurity.com/files/174696/Razer-Synapse-Race-Condition-DLL-Hijacking.html Exploit,Third Party Advisory,VDB Entry
http://seclists.org/fulldisclosure/2023/Sep/6 Exploit,Mailing List,Third Party Advisory
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2023-002.txt Exploit,Third Party Advisory

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