CVE-2021-38692: Stack Overflow Vulnerability in QVR Elite, QVR Pro and QVR Guard
First published: Fri Jan 14 2022(Updated: )
A stack buffer overflow vulnerability has been reported to affect QNAP device running QVR Elite, QVR Pro, QVR Guard. If exploited, this vulnerability allows attackers to execute arbitrary code. We have already fixed this vulnerability in the following versions of QVR Elite, QVR Pro, QVR Guard: QuTS hero h5.0.0: QVR Elite 2.1.4.0 (2021/12/06) and later QuTS hero h4.5.4: QVR Elite 2.1.4.0 (2021/12/06) and later QTS 5.0.0: QVR Elite 2.1.4.0 (2021/12/06) and later QTS 4.5.4: QVR Elite 2.1.4.0 (2021/12/06) and later QTS 4.5.4: QVR Pro 2.1.3.0 (2021/12/06) and later QTS 5.0.0: QVR Pro 2.1.3.0 (2021/12/06) and later QTS 4.5.4: QVR Guard 2.1.3.0 (2021/12/06) and later QTS 5.0.0: QVR Guard 2.1.3.0 (2021/12/06) and later
Credit: security@qnapsecurity.com.tw
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Qnap Qvr Elite | <2.1.4.0 | |
| Qnap Qvr Guard | <2.1.3.0 | |
| Qnap Qvr Pro | <2.1.3.0 |
Remedy
We have already fixed this vulnerability in the following versions of QVR Elite, QVR Pro, QVR Guard: QuTS hero h5.0.0: QVR Elite 2.1.4.0 (2021/12/06) and later QuTS hero h4.5.4: QVR Elite 2.1.4.0 (2021/12/06) and later QTS 5.0.0: QVR Elite 2.1.4.0 (2021/12/06) and later QTS 4.5.4: QVR Elite 2.1.4.0 (2021/12/06) and later QTS 4.5.4: QVR Pro 2.1.3.0 (2021/12/06) and later QTS 5.0.0: QVR Pro 2.1.3.0 (2021/12/06) and later QTS 4.5.4: QVR Guard 2.1.3.0 (2021/12/06) and later QTS 5.0.0: QVR Guard 2.1.3.0 (2021/12/06) and later
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Reference Links
Frequently Asked Questions
What is CVE-2021-38692?
CVE-2021-38692 is a stack buffer overflow vulnerability that affects QNAP devices running QVR Elite, QVR Pro, and QVR Guard.
How does CVE-2021-38692 impact QNAP devices?
CVE-2021-38692 allows attackers to execute arbitrary code on vulnerable QNAP devices.
What is the severity of CVE-2021-38692?
CVE-2021-38692 has a severity rating of critical with a CVSS score of 9.8.
Which versions of QVR Elite are affected by CVE-2021-38692?
Versions up to and excluding 2.1.4.0 of QVR Elite are affected by CVE-2021-38692.
How can I fix the CVE-2021-38692 vulnerability?
To fix the CVE-2021-38692 vulnerability, you need to update QVR Elite, QVR Pro, and QVR Guard to the fixed versions provided by QNAP.
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