// For flags

CVE-2020-5275

Firewall configured with unanimous strategy was not actually unanimous in symfony/security-http

Severity Score

8.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

In symfony/security-http before versions 4.4.7 and 5.0.7, when a `Firewall` checks access control rule, it iterate overs each rule's attributes and stops as soon as the accessDecisionManager decides to grant access on the attribute, preventing the check of next attributes that should have been take into account in an unanimous strategy. The accessDecisionManager is now called with all attributes at once, allowing the unanimous strategy being applied on each attribute. This issue is patched in versions 4.4.7 and 5.0.7.

En symfony/security-http versiones anteriores a 4.4.7 y 5.0.7, cuando un "Firewall" comprueba la regla de control de acceso, itera sobre los atributos de cada regla y se detiene tan pronto como accessDecisionManager decide otorgar acceso sobre el atributo, impidiendo la comprobación de los siguientes atributos que deberían haberse tenido en cuenta en una estrategia unánime. AccessDecisionManager es ahora llamado con todos los atributos a la vez, permitiendo que la estrategia unánime sea aplicada en cada atributo. Este problema está parcheado en las versiones 4.4.7 y 5.0.7.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
Partial
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-01-02 CVE Reserved
  • 2020-03-30 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-285: Improper Authorization
  • CWE-863: Incorrect Authorization
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"
 >= 4.4.0 < 4.4.7
Search vendor "Sensiolabs" for product "Symfony" and version " >= 4.4.0 < 4.4.7"
-
Affected
Sensiolabs
Search vendor "Sensiolabs"
 Symfony
Search vendor "Sensiolabs" for product "Symfony"
 >= 5.0.0 < 5.0.7
Search vendor "Sensiolabs" for product "Symfony" and version " >= 5.0.0 < 5.0.7"
-
Affected