1. EXECUTIVE SUMMARY
- CVSS v3 8.0
- ATTENTION: Exploitable remotely/low attack complexity/public exploits are available/known public exploitation
- Vendor: QNAP
- Equipment: VioStor NVR
- Vulnerability: OS Command Injection
2. RISK EVALUATION
Successful exploitation of this vulnerability could allow an attacker to achieve remote code execution by exploiting NTP settings.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of QNAP VioStor NVR, are affected:
- VioStor NVR QVR firmware: All versions prior to 4.x
3.2 Vulnerability Overview
3.2.1 IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN AN OS COMMAND (‘OS COMMAND INJECTION’) CWE-78
QNAP VioStor NVR versions prior to QVR Firmware 4.x are vulnerable to an OS command injection vulnerability that may allow an attacker to modify NTP settings in the device. This could result in remote code execution.
CVE-2023-47565 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.0 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
3.3 BACKGROUND
- CRITICAL INFRASTRUCTURE SECTORS: Commercial Facilities
- COUNTRIES/AREAS DEPLOYED: Worldwide
- COMPANY HEADQUARTERS LOCATION: Taiwan
3.4 RESEARCHER
Chad Seaman and Larry Cashdollar of Akamai Technologies reported this vulnerability to CISA.
4. MITIGATIONS
QNAP has provided that users should download and apply the latest QVR Firmware.
QNAP has stated that QVR Firmware 5.x and 4.x are both end of life.
For more informatio
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