// For flags

CVE-2021-41268

Cookie persistence in Symfony

Severity Score

8.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Symfony/SecurityBundle is the security system for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Since the rework of the Remember me cookie in version 5.3.0, the cookie is not invalidated when the user changes their password. Attackers can therefore maintain their access to the account even if the password is changed as long as they have had the chance to login once and get a valid remember me cookie. Starting with version 5.3.12, Symfony makes the password part of the signature by default. In that way, when the password changes, then the cookie is not valid anymore.

Symfony/SecurityBundle es el sistema de seguridad de Symfony, un framework PHP para aplicaciones web y de consola y un conjunto de componentes PHP reusables. Desde la revisión de la cookie Remember me en la versión 5.3.0, la cookie no es invalidada cuando el usuario cambia su contraseña. Por lo tanto, los atacantes pueden mantener su acceso a la cuenta aunque se cambie la contraseña, siempre y cuando hayan tenido la oportunidad de iniciar sesión una vez y conseguir una cookie remember me válida. A partir de la versión 5.3.12, Symfony hace que la contraseña sea parte de la firma por defecto. De esta forma, cuando la contraseña cambia, la cookie deja de ser válida

*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
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-09-15 CVE Reserved
  • 2021-11-24 CVE Published
  • 2023-07-16 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-384: Session Fixation
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Sensiolabs
Search vendor "Sensiolabs"
 Symfony
Search vendor "Sensiolabs" for product "Symfony"
 >= 5.3.0 < 5.3.12
Search vendor "Sensiolabs" for product "Symfony" and version " >= 5.3.0 < 5.3.12"
-
Affected