CVE-2021-38687— Stack Overflow Vulnerability in Surveillance Station
Quick assessment
Affected
QNAP Systems Inc. Surveillance Station
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
QNAP NAS是中国威联通科技（QNAP）公司的一个可访问且快速的存储解决方案。 QNAP NAS Surveillance Station 存在缓冲区错误漏洞，该漏洞源于软件处理请求时的边界错误而存在的。未经身份验证的远程攻击者可利用该漏洞可以向系统发送专门的请求，触发基于堆栈的缓冲区溢出，并在目标系统上执行任意代码。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-38687
Vulnerability Information
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Vulnerability Title
Stack Overflow Vulnerability in Surveillance Station
Source: CVE Program / CVE List V5
Vulnerability Description
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
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
QNAP NAS 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
QNAP NAS是中国威联通科技（QNAP）公司的一个可访问且快速的存储解决方案。 QNAP NAS Surveillance Station 存在缓冲区错误漏洞，该漏洞源于软件处理请求时的边界错误而存在的。未经身份验证的远程攻击者可利用该漏洞可以向系统发送专门的请求，触发基于堆栈的缓冲区溢出，并在目标系统上执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| QNAP Systems Inc. | Surveillance Station | unspecified ~ 5.2.0.4.2 ( 2021/10/26 ) | - |
|
| QNAP Systems Inc. | Surveillance Station | unspecified ~ 5.2.0.3.2 ( 2021/10/26 ) | - |
|
| QNAP Systems Inc. | Surveillance Station | unspecified ~ 5.1.5.4.6 ( 2021/10/26 ) | - |
|
| QNAP Systems Inc. | Surveillance Station | unspecified ~ 5.1.5.3.6 ( 2021/10/26 ) | - |
|
| QNAP Systems Inc. | Surveillance Station | unspecified ~ 5.1.5.3.6 ( 2021/10/26 ) | - |
|
II. Public POCs for CVE-2021-38687
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|---|
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Other References for CVE-2021-38687 (1)
-
https://www.qnap.com/en/security-advisory/qsa-21-46 x_refsource_MISC
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V. Comments for CVE-2021-38687
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