CVE-2021-34572

CVSS V2 Low 3.3 CVSS V3 Medium 6.5

Description

Enbra EWM 1.7.29 does not check for or detect replay attacks sent by wireless M-Bus Security mode 5 devices. Instead timestamps of the sensor are replaced by the time of the readout even if the data is a replay of earlier data.

Overview

CVE ID
CVE-2021-34572

Assigner
info@cert.vde.com

Vulnerability Status
Analyzed

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

Last Modified Date
2021-09-28T17:16:55

Weakness Enumerations

CWE	URL
CWE-345	http://cwe.mitre.org/data/definitions/345.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:L/Au:N/C:N/I:P/A:N

Access Vector
ADJACENT_NETWORK

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
NONE

Integrity Impact
PARTIAL

Availability Impact
NONE

Base Score
3.3

Severity
LOW

Exploitability Score
6.5

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:N/I:H/A:N

Attack Vector
ADJACENT_NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
NONE

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-2021-34572.en	Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-34572
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34572

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 06:53:08				Added to TrackCVE
2022-12-05 10:45:28	2021-09-16T13:15Z	2021-09-16T13:15:14	CVE Published Date	updated
2022-12-05 10:45:28		2021-09-28T17:16:55	CVE Modified Date	updated
2022-12-05 10:45:28		Analyzed	Vulnerability Status	updated