CVE-2021-38687: Stack Overflow Vulnerability in Surveillance Station
First published: Wed Dec 29 2021(Updated: )
A stack buffer overflow vulnerability has been reported to affect QNAP NAS running Surveillance Station. If exploited, this vulnerability allows attackers to execute arbitrary code. We have already fixed this vulnerability in the following versions of Surveillance Station: QTS 5.0.0 (64 bit): Surveillance Station 5.2.0.4.2 ( 2021/10/26 ) and later QTS 5.0.0 (32 bit): Surveillance Station 5.2.0.3.2 ( 2021/10/26 ) and later QTS 4.3.6 (64 bit): Surveillance Station 5.1.5.4.6 ( 2021/10/26 ) and later QTS 4.3.6 (32 bit): Surveillance Station 5.1.5.3.6 ( 2021/10/26 ) and later QTS 4.3.3: Surveillance Station 5.1.5.3.6 ( 2021/10/26 ) and later
Credit: security@qnapsecurity.com.tw
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Qnap Surveillance Station | <5.2.0.4.2 | |
| QNAP QTS | =5.0.0 | |
| Qnap Surveillance Station | <5.2.0.3.2 | |
| QNAP QTS | =5.0.0 | |
| Qnap Surveillance Station | <5.1.5.4.6 | |
| QNAP QTS | =4.3.6 | |
| Qnap Surveillance Station | <5.1.5.3.6 | |
| QNAP QTS | =4.3.6 | |
| QNAP QTS | =4.3.3 |
Remedy
We have already fixed this vulnerability in the following versions of Surveillance Station: QTS 5.0.0 (64 bit): Surveillance Station 5.2.0.4.2 ( 2021/10/26 ) and later QTS 5.0.0 (32 bit): Surveillance Station 5.2.0.3.2 ( 2021/10/26 ) and later QTS 4.3.6 (64 bit): Surveillance Station 5.1.5.4.6 ( 2021/10/26 ) and later QTS 4.3.6 (32 bit): Surveillance Station 5.1.5.3.6 ( 2021/10/26 ) and later QTS 4.3.3 (32 bit): Surveillance Station 5.1.5.3.6 ( 2021/10/26 ) and later
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Reference Links
Frequently Asked Questions
What is CVE-2021-38687?
CVE-2021-38687 is a stack buffer overflow vulnerability that affects QNAP NAS running Surveillance Station.
What is the severity of CVE-2021-38687?
The severity of CVE-2021-38687 is critical with a CVSS 3.1 score of 9.8.
Which software versions are affected by CVE-2021-38687?
QNAP Surveillance Station versions up to but excluding 5.2.0.4.2 are affected by CVE-2021-38687.
How can I fix CVE-2021-38687?
You can fix CVE-2021-38687 by updating Surveillance Station to version 5.2.0.4.2 or later.
Where can I find more information about CVE-2021-38687?
You can find more information about CVE-2021-38687 in the QNAP security advisory QSA-21-46.
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