NVD

CVE-2021-27661 Detail

Description

Successful exploitation of this vulnerability could give an authenticated Facility Explorer SNC Series Supervisory Controller (F4-SNC) user an unintended level of access to the controller’s file system, allowing them to access or modify system files by sending specifically crafted web messages to the F4-SNC.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

CNA: Johnson Controls

Base Score: 8.8 HIGH

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: 6.5 MEDIUM

Vector: (AV:N/AC:L/Au:S/C:P/I:P/A:P)

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://us-cert.cisa.gov/ics/advisories/icsa-21-182-01	Third Party Advisory US Government Resource
https://www.johnsoncontrols.com/cyber-solutions/security-advisories	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-863	Incorrect Authorization	NIST
CWE-269	Improper Privilege Management	Johnson Controls

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

Initial Analysis by NIST 7/07/2021 3:11:42 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		AND OR cpe:2.3:o:johnsoncontrols:f4-snc_firmware:11::::::: OR cpe:2.3:h:johnsoncontrols:f4-snc:-:::::::*
Added	CVSS V2		NIST (AV:N/AC:L/Au:S/C:P/I:P/A:P)
Added	CVSS V3.1		NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Added	CWE		NIST CWE-863
Changed	Reference Type	https://us-cert.cisa.gov/ics/advisories/icsa-21-182-01 No Types Assigned	https://us-cert.cisa.gov/ics/advisories/icsa-21-182-01 Third Party Advisory, US Government Resource
Changed	Reference Type	https://www.johnsoncontrols.com/cyber-solutions/security-advisories No Types Assigned	https://www.johnsoncontrols.com/cyber-solutions/security-advisories Vendor Advisory

Quick Info

CVE Dictionary Entry:
CVE-2021-27661
NVD Published Date:
07/01/2021
NVD Last Modified:
07/07/2021
Source:
Johnson Controls

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Information Technology Laboratory

National Vulnerability Database