CVE-2021-27662

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

CVSS v3 8.1 HIGH
CVSS v2.0 6.8 MEDIUM

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://us-cert.gov/ics/advisories	Third Party Advisory US Government Resource
https://www.johnsoncontrols.com/cyber-solutions/security-advisories	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:johnsoncontrols:kantech_kt-1_door_controller_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:johnsoncontrols:kantech_kt-1_door_controller:-:*:*:*:*:*:*:*

History

28 Sep 2021, 00:58

Type	Values Removed	Values Added
CWE		CWE-294
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 6.8 v3 : 8.1
CPE		cpe:2.3:o:johnsoncontrols:kantech_kt-1_door_controller_firmware:::::::: cpe:2.3:h:johnsoncontrols:kantech_kt-1_door_controller:-:::::::*
References	~~(CERT) https://us-cert.gov/ics/advisories -~~	(CERT) https://us-cert.gov/ics/advisories - Third Party Advisory, US Government Resource
References	~~(CONFIRM) https://www.johnsoncontrols.com/cyber-solutions/security-advisories -~~	(CONFIRM) https://www.johnsoncontrols.com/cyber-solutions/security-advisories - Vendor Advisory

15 Sep 2021, 13:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2021-09-15 13:15

Updated : 2023-12-10 14:09

NVD link : CVE-2021-27662

Mitre link : CVE-2021-27662

CVE.ORG link : CVE-2021-27662

JSON object : View

Products Affected

johnsoncontrols

kantech_kt-1_door_controller
kantech_kt-1_door_controller_firmware

CWE

CWE-294

Authentication Bypass by Capture-replay

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