// For flags

CVE-2021-34580

Remote user enumeration in mymbCONNECT24, mbCONNECT24 <= 2.9.0

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

In mymbCONNECT24, mbCONNECT24 <= 2.9.0 an unauthenticated user can enumerate valid backend users by checking what kind of response the server sends for crafted invalid login attempts.

En mymbCONNECT24, mbCONNECT24 versiones anteriores a 2.9.0 incluyéndola, un usuario no autenticado puede enumerar los usuarios válidos del backend al comprobar qué tipo de respuesta envía el servidor para los intentos de inicio de sesión no válidos diseñados

*Credits: LEWA Attendorn GmbH reported the vulnerability to MB connect line. CERT@VDE coordinated.
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-06-10 CVE Reserved
  • 2021-10-27 CVE Published
  • 2024-07-12 EPSS Updated
  • 2024-09-17 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-203: Observable Discrepancy
  • CWE-204: Observable Response Discrepancy
CAPEC
References (1)
URL Tag Source
https://cert.vde.com/en/advisories/VDE-2021-037 Third Party Advisory
URL Date SRC
URL Date SRC
URL Date SRC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Mbconnectline
Search vendor "Mbconnectline"
 Mbconnect24
Search vendor "Mbconnectline" for product "Mbconnect24"
 <= 2.9.0
Search vendor "Mbconnectline" for product "Mbconnect24" and version " <= 2.9.0"
-
Affected
Mbconnectline
Search vendor "Mbconnectline"
 Mymbconnect24
Search vendor "Mbconnectline" for product "Mymbconnect24"
 <= 2.9.0
Search vendor "Mbconnectline" for product "Mymbconnect24" and version " <= 2.9.0"
-
Affected