CVE-2023-34034:Spring Security WebFlux Pattern Matching Security Bypass

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Using "**" as a pattern in Spring Security configuration for WebFlux creates a mismatch in pattern matching between Spring Security and Spring WebFlux, potentially allowing attackers to bypass security controls. This vulnerability affects applications using Spring Security with WebFlux and could lead to unauthorized access to protected resources.

Overview

CVE-2023-34034 is a security vulnerability in Spring Security's WebFlux integration. The issue occurs when the "" pattern is used in security configurations, which creates inconsistent pattern matching behavior between Spring Security and Spring WebFlux. This inconsistency can be exploited by attackers to bypass security controls and access protected resources that should be restricted. Applications using Spring Security with WebFlux and employing the "" pattern in their security configurations are affected by this vulnerability.

Remediation

To remediate this vulnerability:

  1. Update to patched versions of Spring Security:
    • Spring Security 5.8.3
    • Spring Security 6.0.3
    • Spring Security 6.1.0 or later
  2. If immediate updating is not possible, avoid using "**" patterns in WebFlux security configurations
  3. Review existing security configurations to ensure they don't rely on the "**" pattern
  4. After updating, test your application thoroughly to ensure security controls are working as expected
  5. Monitor application logs for any unusual access patterns that might indicate exploitation attempts

References

  1. Spring.io Security Advisory: https://spring.io/security/cve-2023-34034
  2. NetApp Security Advisory: https://security.netapp.com/advisory/ntap-20230814-0008/
  3. Spring Security Documentation: https://docs.spring.io/spring-security/reference/
  4. Spring WebFlux Documentation: https://docs.spring.io/spring-framework/reference/web/webflux.html

Industry ExposureMost to least
This section illustrates the prevalence of a specific Common Vulnerabilities and Exposures (CVE) across various industries based on customer reports. The ranking displays industries from the most to least affected by this particular vulnerability, offering valuable insight into where this CVE has been most frequently observed. This information can help organizations within these sectors prioritize their security efforts, understand their relative risk exposure compared to their peers, and focus remediation strategies where they are most needed. By understanding the industry-specific impact, organizations can make more informed decisions regarding patching, resource allocation, and overall risk management related to this CVE.

  1. Manufacturing
    Manufacturing
  2. Public Administration
    Public Administration
  3. Retail Trade
    Retail Trade
  4. Finance and Insurance
    Finance and Insurance
  5. Professional, Scientific, & Technical Services
    Professional, Scientific, & Technical Services
  6. Transportation & Warehousing
    Transportation & Warehousing
  7. Arts, Entertainment & Recreation
    Arts, Entertainment & Recreation
  8. Management of Companies & Enterprises
    Management of Companies & Enterprises
  9. Other Services (except Public Administration)
    Other Services (except Public Administration)
  10. Accommodation & Food Services
    Accommodation & Food Services
  11. Administrative, Support, Waste Management & Remediation Services
    Administrative, Support, Waste Management & Remediation Services
  12. Agriculture, Forestry Fishing & Hunting
    Agriculture, Forestry Fishing & Hunting
  13. Construction
    Construction
  14. Educational Services
    Educational Services
  15. Health Care & Social Assistance
    Health Care & Social Assistance
  16. Information
    Information
  17. Mining
    Mining
  18. Real Estate Rental & Leasing
    Real Estate Rental & Leasing
  19. Utilities
    Utilities
  20. Wholesale Trade
    Wholesale Trade

Focus on What Matters

  1. See Everything.
  2. Identify True Risk.
  3. Proactively Mitigate Threats.

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