What is CVE-2021-34344?

CVE-2021-34344 is a critical stack buffer overflow vulnerability affecting certain QNAP devices running QUSBCam2. If exploited, attackers can execute arbitrary code on affected systems, potentially leading to unauthorized access, data theft, or other malicious activities. The vulnerability impacts a range of systems, including those running QTS 4.5.4, QTS 5.0, QTS 4.3.6, QTS 4.3.3, and QuTS hero 4.5.3 with QUSBCam2 versions up to (excluding) 1.1.4. Users are advised to update QUSBCam2 to the latest version to mitigate the risk.

Who is impacted?

The CVE-2021-34344 vulnerability affects users of certain QNAP devices running QUSBCam2, a software that has a critical stack buffer overflow issue. If exploited, attackers can execute arbitrary code on the affected systems. The vulnerability impacts devices running QTS 4.5.4, QTS 5.0, QTS 4.3.6, QTS 4.3.3, and QuTS hero 4.5.3 with QUSBCam2 versions up to (excluding) 1.1.4. Users should be aware of this issue and take necessary precautions to protect their systems.

What to do if CVE-2021-34344 affected you

If you're affected by the CVE-2021-34344 vulnerability, it's crucial to update your QUSBCam2 software to the latest version. Follow these simple steps to mitigate the risk:

1. Log on to QTS or QuTS hero as administrator.

2. Open the App Center and click on the search box.

3. Type "QUSBCam2" and press ENTER. QUSBCam2 appears in the search results.

4. Click Update. A confirmation message appears. (Note: The Update button is not available if your QUSBCam2 is already up to date.)

5. Click OK. The application is updated.

Is it in CISA’s Known Exploited Vulnerabilities Catalog?

The CVE-2021-34344 vulnerability is not listed in CISA's Known Exploited Vulnerabilities Catalog. This stack buffer overflow issue affects QNAP devices running QUSBCam2 and can allow attackers to execute arbitrary code. The vulnerability was published on September 10, 2021, and the required action is to update QUSBCam2 to the latest version to mitigate the risk.

Weakness Enumeration

The weakness enumeration for this vulnerability is categorized as CWE-787, an out-of-bounds write issue affecting QNAP devices running QUSBCam2.

Learn More

CVE-2021-34344 is a critical vulnerability affecting QNAP devices running QUSBCam2, allowing attackers to execute arbitrary code if exploited. For a comprehensive understanding of the vulnerability, including its description, severity, technical details, and known affected software configurations, refer to the NVD page or the sources listed below.

• NVD - CVE-2021-34344

• Stack Buffer Overflow Vulnerability in QUSBCam2