CVE-2021-27662: KT-1 Capture-replay

Published Sep 15, 2021
·
Updated

The KT-1 door controller is susceptible to replay or man-in-the-middle attacks where an attacker can record and replay TCP packets. This issue affects Johnson Controls KT-1 all versions up to and including 3.01

Affected Software

2 affected components
Johnsoncontrols Kantech Kt-1 Door Controller Firmware<=3.01
Johnsoncontrols Kantech Kt-1 Door Controller

Remediation

Information

Upgrade the KT-1 controller to version 3.04 and upgrade EntraPass to version 8.40.

Event History

Sep 15, 2021
CVE Published
via MITRE·12:04 PM
Data Sourced
via MITRE·12:04 PM
RemedyDescriptionSeverityWeakness

Frequently Asked Questions

1

What is the vulnerability ID for this issue?

The vulnerability ID for this issue is CVE-2021-27662.

2

What is the severity of CVE-2021-27662?

The severity of CVE-2021-27662 is high (8.1).

3

What is the affected software?

The affected software is Johnson Controls KT-1 door controller firmware versions up to and including 3.01.

4

What are the possible impacts of this vulnerability?

This vulnerability allows an attacker to perform replay or man-in-the-middle attacks by recording and replaying TCP packets.

5

Are there any solutions or patches available?

Please refer to the Johnson Controls security advisory for information on available solutions or patches.

Contact

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