4.3
MEDIUM
CVE-2021-34574
MB Connect Line mymbCONNECT24, Helmholz myREX24 Password Policy Bypass
Description

In MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual in all versions through v2.11.2 an authenticated attacker can change the password of his account into a new password that violates the password policy by intercepting and modifying the request that is send to the server.

INFO

Published Date :

Aug. 2, 2021, 11:15 a.m.

Last Modified :

Nov. 21, 2024, 6:10 a.m.

Remotely Exploitable :

Yes !

Impact Score :

1.4

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2021-34574 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Mbconnectline mbconnect24
2 Mbconnectline mymbconnect24
1 Helmholz myrex24
2 Helmholz myrex24.virtual
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-34574.

URL Resource
https://cert.vde.com/en/advisories/VDE-2021-030 Third Party Advisory
https://cert.vde.com/en/advisories/VDE-2022-039 Third Party Advisory
https://cert.vde.com/en/advisories/VDE-2021-030 Third Party Advisory
https://cert.vde.com/en/advisories/VDE-2022-039 Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-34574 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-34574 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://cert.vde.com/en/advisories/VDE-2021-030
    Added Reference https://cert.vde.com/en/advisories/VDE-2022-039
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Feb. 03, 2023

    Action Type Old Value New Value
    Changed Reference Type https://cert.vde.com/en/advisories/VDE-2021-030 No Types Assigned https://cert.vde.com/en/advisories/VDE-2021-030 Third Party Advisory
    Changed Reference Type https://cert.vde.com/en/advisories/VDE-2022-039 No Types Assigned https://cert.vde.com/en/advisories/VDE-2022-039 Third Party Advisory
    Changed CPE Configuration OR *cpe:2.3:a:mbconnectline:mbconnect24:*:*:*:*:*:*:*:* versions up to (including) 2.8.0 *cpe:2.3:a:mbconnectline:mymbconnect24:*:*:*:*:*:*:*:* versions up to (including) 2.8.0 OR *cpe:2.3:a:mbconnectline:mbconnect24:*:*:*:*:*:*:*:* versions up to (including) 2.11.2 *cpe:2.3:a:mbconnectline:mymbconnect24:*:*:*:*:*:*:*:* versions up to (including) 2.11.2
    Added CPE Configuration OR *cpe:2.3:a:helmholz:myrex24:*:*:*:*:*:*:*:* versions up to (including) 2.11.2 *cpe:2.3:a:helmholz:myrex24.virtual:*:*:*:*:*:*:*:* versions up to (including) 2.11.2
  • CVE Modified by [email protected]

    Sep. 14, 2022

    Action Type Old Value New Value
    Changed Description In MB connect line mymbCONNECT24, mbCONNECT24 in versions <= 2.8.0 an authenticated attacker can change the password of his account into a new password that violates the password policy by intercepting and modifying the request that is send to the server. In MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual in all versions through v2.11.2 an authenticated attacker can change the password of his account into a new password that violates the password policy by intercepting and modifying the request that is send to the server.
    Removed Reference https://cert.vde.com/de-de/advisories/vde-2021-030 [Third Party Advisory]
    Added Reference https://cert.vde.com/en/advisories/VDE-2022-039 [No Types Assigned]
    Added Reference https://cert.vde.com/en/advisories/VDE-2021-030 [No Types Assigned]
  • Initial Analysis by [email protected]

    Aug. 10, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:N/I:P/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
    Changed Reference Type https://cert.vde.com/de-de/advisories/vde-2021-030 No Types Assigned https://cert.vde.com/de-de/advisories/vde-2021-030 Third Party Advisory
    Added CWE NIST CWE-669
    Added CPE Configuration OR *cpe:2.3:a:mbconnectline:mbconnect24:*:*:*:*:*:*:*:* versions up to (including) 2.8.0 *cpe:2.3:a:mbconnectline:mymbconnect24:*:*:*:*:*:*:*:* versions up to (including) 2.8.0
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-34574 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-34574 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.05 }} 0.00%

score

0.17239

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability