CVE-2021-38689: 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-2021-38689?
CVE-2021-38689 is a stack buffer overflow vulnerability that affects QNAP devices running QVR Elite, QVR Pro, and QVR Guard.
What is the severity of CVE-2021-38689?
The severity of CVE-2021-38689 is critical with a CVSS score of 9.8.
Which software versions are affected by CVE-2021-38689?
CVE-2021-38689 affects QVR Elite versions up to and excluding 2.1.4.0, QVR Guard versions up to and excluding 2.1.3.0, and QVR Pro versions up to and excluding 2.1.3.0.
How can CVE-2021-38689 be exploited?
Exploiting CVE-2021-38689 allows attackers to execute arbitrary code.
Has CVE-2021-38689 been patched?
Yes, CVE-2021-38689 has been fixed in the following versions of QVR Elite, QVR Pro, and QVR Guard: QuTS.
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