// For flags

CVE-2021-41171

Bypass bruteforce protection on login form in elabftw

Severity Score

8.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

eLabFTW is an open source electronic lab notebook manager for research teams. In versions of eLabFTW before 4.1.0, it allows attackers to bypass a brute-force protection mechanism by using many different forged PHPSESSID values in HTTP Cookie header. This issue has been addressed by implementing brute force login protection, as recommended by Owasp with Device Cookies. This mechanism will not impact users and will effectively thwart any brute-force attempts at guessing passwords. The only correct way to address this is to upgrade to version 4.1.0. Adding rate limitation upstream of the eLabFTW service is of course a valid option, with or without upgrading.

eLabFTW es un administrador de cuadernos de laboratorio electrónicos de código abierto para equipos de investigación. En las versiones de eLabFTW anteriores a 4.1.0, permite a atacantes omitir un mecanismo de protección de fuerza bruta mediante el uso de varios valores falsos de PHPSESSID en el encabezado de la cookie HTTP. Este problema ha sido solucionado al implementar una protección de inicio de sesión por fuerza bruta, tal y como recomienda Owasp con las Cookies de Dispositivo. Este mecanismo no afectará a usuarios y frustrará eficazmente cualquier intento de fuerza bruta para adivinar las contraseñas. La única forma correcta de abordar esto es actualizar a la versión 4.1.0. Añadir la limitación de la tasa del servicio eLabFTW es por supuesto una opción válida, con o sin actualización

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
Partial
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-09-15 CVE Reserved
  • 2021-10-22 CVE Published
  • 2024-05-16 EPSS Updated
  • 2024-08-04 CVE Updated
  • 2024-08-04 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-307: Improper Restriction of Excessive Authentication Attempts
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Elabftw
Search vendor "Elabftw"
Elabftw
Search vendor "Elabftw" for product "Elabftw"
< 4.1.0
Search vendor "Elabftw" for product "Elabftw" and version " < 4.1.0"
-
Affected