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CVE-2023-4346

Quick assessment

Affected
KNX Association KNX Protocol Connection Authorization Option 1
Exploitation
Confirmed exploitation in the wild; remediate immediately
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

KNX Connection Authorization是KNX开源的一个网络安全产品。 KNX Connection Authorization存在安全漏洞，该漏洞源于容易被锁定，并且用户无法重置它们以获得对设备的访问权限。

CVSS 7.5 · High KEV EPSS 1.29% · P70

Affected Version Matrix 1

VendorProduct Version RangeStatus
KNX Association KNX Protocol Connection Authorization Option 1 affected
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I. Basic Information for CVE-2023-4346

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
KNX devices that use KNX Connection Authorization and support Option 1 are, depending on the implementation, vulnerable to being locked and users being unable to reset them to gain access to the device. The BCU key feature on the devices can be used to create a password for the device, but this password can often not be reset without entering the current password. If the device is configured to interface with a network, an attacker with access to that network could interface with the KNX installation, purge all devices without additional security options enabled, and set a BCU key, locking the device. Even if a device is not connected to a network, an attacker with physical access to the device could also exploit this vulnerability in the same way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
过度限制的账户封锁机制
Source: CVE Program / CVE List V5
Vulnerability Title
KNX Connection Authorization 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
KNX Connection Authorization是KNX开源的一个网络安全产品。 KNX Connection Authorization存在安全漏洞，该漏洞源于容易被锁定，并且用户无法重置它们以获得对设备的访问权限。
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
KNX Association KNX Protocol Connection Authorization Option 1 0 -

II. Public POCs for CVE-2023-4346

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III. Intelligence Information for CVE-2023-4346

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Vendor Advisories for CVE-2023-4346 (1)

IV. Related Vulnerabilities

Same weakness: CWE-645

V. Comments for CVE-2023-4346

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