CVE-2021-34345— Stack Based Overflow Vulnerability in NVR Storage Expansion
Quick assessment
Affected
QNAP Systems Inc. NVR Storage Expansion
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 Systems QNAP NVR是中国威联通（Qnap Systems）公司的具有存储扩展性和基于物联网的智能事件管理平台。 NVR Storage Expansion 1.0.6之前版本存在安全漏洞，该漏洞允许攻击者执行任意代码。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-34345
Vulnerability Information
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Vulnerability Title
Stack Based Overflow Vulnerability in NVR Storage Expansion
Source: CVE Program / CVE List V5
Vulnerability Description
A stack buffer overflow vulnerability has been reported to affect QNAP device running NVR Storage Expansion. If exploited, this vulnerability allows attackers to execute arbitrary code. We have already fixed this vulnerability in the following versions of NVR Storage Expansion: NVR Storage Expansion 1.0.6 ( 2021/08/03 ) and later
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
QNAP NVR 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Qnap Systems QNAP NVR是中国威联通（Qnap Systems）公司的具有存储扩展性和基于物联网的智能事件管理平台。 NVR Storage Expansion 1.0.6之前版本存在安全漏洞，该漏洞允许攻击者执行任意代码。
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. | NVR Storage Expansion | unspecified ~ 1.0.6 ( 2021/08/03 ) | - |
|
II. Public POCs for CVE-2021-34345
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2021-34345 (1)
-
https://www.qnap.com/en/security-advisory/qsa-21-36 x_refsource_MISC
Same Patch Batch · QNAP Systems Inc. · 2021-09-10 · 7 CVEs total
| CVE-2021-34344 | 9.8 CRITICAL | Stack Buffer Overflow Vulnerability in QUSBCam2 |
| CVE-2021-34346 | 9.8 CRITICAL | Stack Based Overflow Vulnerability in NVR Storage Expansion |
| CVE-2021-28813 | 9.6 CRITICAL | Insufficiently Protected Credentials Vulnerability in QSW-M2116P-2T2S and QuNetSwitch |
| CVE-2021-28816 | 7.6 HIGH | Stack Buffer Overflow Vulnerabilities in QTS, QuTS hero, and QuTScloud |
| CVE-2021-34343 | 6.0 MEDIUM | Buffer Overflow Vulnerability in QTS, QuTS hero, and QuTScloud |
| CVE-2018-19957 | Insufficient HTTP Security Headers in QTS, QuTS hero, and QuTScloud |
IV. Related Vulnerabilities
V. Comments for CVE-2021-34345
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