CVE-2021-34571

CVSS V2 Low 2.9 CVSS V3 Medium 6.5

Description

Multiple Wireless M-Bus devices by Enbra use Hard-coded Credentials in Security mode 5 without an option to change the encryption key. An adversary can learn all information that is available in Enbra EWM.

Overview

CVE ID
CVE-2021-34571

Assigner
info@cert.vde.com

Vulnerability Status
Analyzed

Published Version
2021-09-16T13:15:14

Last Modified Date
2021-09-28T01:27:44

Weakness Enumerations

CWE	URL
CWE-798	http://cwe.mitre.org/data/definitions/798.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:enbra:ewm:1.7.29:::::::*	1	OR

CVSS Version 2

Version
2.0

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

Access Vector
ADJACENT_NETWORK

Access Compatibility
MEDIUM

Authentication
NONE

Confidentiality Impact
PARTIAL

Integrity Impact
NONE

Availability Impact
NONE

Base Score
2.9

Severity
LOW

Exploitability Score
5.5

Impact Score
2.9

CVSS Version 3

Version
3.1

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

Attack Vector
ADJACENT_NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
NONE

Base Score
6.5

Base Severity
MEDIUM

Exploitability Score
2.8

Impact Score
3.6

References

Reference URL	Reference Tags
https://www.fit.vutbr.cz/~polcak/CVE-2021-34571.en	Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-34571
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34571

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 06:53:14				Added to TrackCVE
2022-12-05 10:45:25	2021-09-16T13:15Z	2021-09-16T13:15:14	CVE Published Date	updated
2022-12-05 10:45:25		2021-09-28T01:27:44	CVE Modified Date	updated
2022-12-05 10:45:25		Analyzed	Vulnerability Status	updated