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CVE-2021-20989— Fibaro Home Center Insufficient remote access server authorization

Quick assessment

Affected
Fibar Group S.A Fibaro Home Center
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.

FIBARO Home Center 2是波兰FIBARO公司的一个应用系统。一个系统集成系统。 Fibaro Home Center 2 存在安全漏洞，该漏洞源于SSH连接可以被DNS spoofing攻击拦截。

CVSS 5.9 · Medium EPSS 1.98% · P80
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I. Basic Information for CVE-2021-20989

Vulnerability Information
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Vulnerability Title
Fibaro Home Center Insufficient remote access server authorization
Source: CVE Program / CVE List V5
Vulnerability Description
Fibaro Home Center 2 and Lite devices with firmware version 4.600 and older initiate SSH connections to the Fibaro cloud to provide remote access and remote support capabilities. This connection can be intercepted using DNS spoofing attack and a device initiated remote port-forward channel can be used to connect to the web management interface. Knowledge of authorization credentials to the management interface is required to perform any further actions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
FIBARO Home Center 2 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FIBARO Home Center 2是波兰FIBARO公司的一个应用系统。一个系统集成系统。 Fibaro Home Center 2 存在安全漏洞，该漏洞源于SSH连接可以被DNS spoofing攻击拦截。
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
Fibar Group S.A Fibaro Home Center Home Center 2 ~ 4.600 -

II. Public POCs for CVE-2021-20989

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III. Intelligence Information for CVE-2021-20989

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Exploits & Public PoCs for CVE-2021-20989 (1)

Mailing List Discussions for CVE-2021-20989 (1)

Security Blog Posts for CVE-2021-20989 (1)

Same Patch Batch · Fibar Group S.A · 2021-04-19 · 4 CVEs total

CVE-2021-20991 9.8 CRITICAL Fibaro Home Center Authenticated remote command execution
CVE-2021-20992 8.1 HIGH Fibaro Home Center Unencrypted management interface
CVE-2021-20990 7.5 HIGH Fibaro Home Center Unauthenticated access to shutdown, reboot and reboot to recovery mode

IV. Related Vulnerabilities

Same product: Fibaro Home Center
Same vendor: Fibar Group S.A
Same weakness: CWE-295

V. Comments for CVE-2021-20989

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