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Spring Security's authorization rules can be misconfigured when using multiple servlets

High severity GitHub Reviewed Published Jul 18, 2023 to the GitHub Advisory Database • Updated Nov 6, 2023

Package

maven org.springframework.security:spring-security-config (Maven)

Affected versions

>= 5.8.0, < 5.8.5
>= 6.0.0, < 6.0.5
>= 6.1.0, < 6.1.2

Patched versions

5.8.5
6.0.5
6.1.2

Description

Spring Security versions 5.8 prior to 5.8.5, 6.0 prior to 6.0.5, and 6.1 prior to 6.1.2 could be susceptible to authorization rule misconfiguration if the application uses requestMatchers(String) and multiple servlets, one of them being Spring MVC’s DispatcherServlet. (DispatcherServlet is a Spring MVC component that maps HTTP endpoints to methods on @Controller-annotated classes.)

Specifically, an application is vulnerable when all of the following are true:

  • Spring MVC is on the classpath
  • Spring Security is securing more than one servlet in a single application (one of them being Spring MVC’s DispatcherServlet)
  • The application uses requestMatchers(String) to refer to endpoints that are not Spring MVC endpoints

An application is not vulnerable if any of the following is true:

  • The application does not have Spring MVC on the classpath
  • The application secures no servlets other than Spring MVC’s DispatcherServlet
  • The application uses requestMatchers(String) only for Spring MVC endpoints

References

Published by the National Vulnerability Database Jul 18, 2023
Published to the GitHub Advisory Database Jul 18, 2023
Reviewed Jul 19, 2023
Last updated Nov 6, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

EPSS score

0.066%
(30th percentile)

Weaknesses

CVE ID

CVE-2023-34035

GHSA ID

GHSA-4vpr-xfrp-cj64

Source code

No known source code
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