Qnap Security Advisory: Command Injection Vulnerabilities in QVR

• Release date: September 27, 2021

• Security ID: QSA-21-35

• Severity: Critical

• CVE identifier: CVE-2021-34348 | CVE-2021-34349 | CVE-2021-34351

• Affected products: Certain Qnap EOL devices running QVR

• Status: Resolved

Summary
Two command injection vulnerabilities have been reported to affect certain Qnap EOL devices running QVR. If exploited, these vulnerabilities allow remote attackers to run arbitrary commands.

The company have already fixed these vulnerabilities in the following versions of QVR:

• QVR 5.1.5 build 20210803 and later

Recommendation
To secure your device, the company strongly recommend updating your system to the latest version to benefit from vulnerability fixes. User can check the product support status to see the latest updates available to your device model.

Updating QVR

1. Log on to QVR as administrator.

2. Go to Control Panel > System Settings > Firmware Update.

3. Under Live Update, click Check for Update.
   QVR downloads and installs the latest available update.

Tip: User can also download the update from qnapsecurity.com. Go to Support > Download and then perform a manual update for your specific device.

Acknowledgements: 360 的安全研究员 侯留洋（houliuyang@360.cn）和叶根深（yegenshen@360.cn）

Revision History: V1.0 (September 27, 2021) – Published