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CVE-2020-3924— TONNET DVR – Firmware Injection

Quick assessment

Affected
TONNET DVR
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.

Tonnet TAT-76和TAT-77系列中存在命令注入漏洞，该漏洞源于DVR固件没有正确验证补丁文件。攻击者可通过向补丁文件注入命令利用该漏洞获取系统的访问权限。

CVSS 6.4 · Medium EPSS 1.26% · P67
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I. Basic Information for CVE-2020-3924

Vulnerability Information
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Vulnerability Title
TONNET DVR – Firmware Injection
Source: CVE Program / CVE List V5
Vulnerability Description
DVR firmware in TAT-76 and TAT-77 series of products, provided by TONNET do not properly verify patch files. Attackers can inject a specific command into a patch file and gain access to the system.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Tonnet TAT-76和TAT-77 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tonnet TAT-76和TAT-77系列中存在命令注入漏洞，该漏洞源于DVR固件没有正确验证补丁文件。攻击者可通过向补丁文件注入命令利用该漏洞获取系统的访问权限。
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
TONNET DVR 0 ~ 20191216 -
TONNET DVR 0 ~ 20200213 -

II. Public POCs for CVE-2020-3924

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III. Intelligence Information for CVE-2020-3924

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Other References for CVE-2020-3924 (2)

IV. Related Vulnerabilities

Same product: DVR
Same vendor: TONNET

V. Comments for CVE-2020-3924

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