CVE-2020-13415:XML Signature Wrapping vulnerability in Aviatrix Controller through 5.1 allows unauthorized access using expired or unauthorized SAML assertions.

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A vulnerability identified as CVE-2020-13415 affects Aviatrix Controller through version 5.1. The issue involves XML Signature Wrapping in SAML implementation, where the system fails to properly validate SAML assertions. An attacker who possesses any signed SAML assertion from the Identity Provider can establish a connection to the Aviatrix Controller, even if that SAML assertion has expired or belongs to a user who is not authorized to access the Aviatrix system. This vulnerability allows unauthorized users to bypass authentication controls and gain access to the system.

Overview

This vulnerability (CWE-347: Improper Verification of Cryptographic Signature) in Aviatrix Controller through version 5.1 allows attackers to bypass authentication mechanisms by exploiting flaws in the SAML implementation. The XML Signature Wrapping attack technique enables attackers to manipulate SAML responses while keeping the original signature intact. As a result, an attacker with any signed SAML assertion can gain unauthorized access to the Aviatrix Controller, regardless of whether the assertion has expired or belongs to an unauthorized user. This vulnerability poses a significant security risk as it could lead to unauthorized access to network infrastructure managed by the Aviatrix Controller.

Remediation

To address this vulnerability, organizations should:

  1. Update Aviatrix Controller to the latest version beyond 5.1 that includes the security patch for this vulnerability.
  2. Follow the specific remediation guidance provided in the Aviatrix security bulletin.
  3. Implement proper SAML assertion validation, including checks for expiration and user authorization.
  4. Monitor authentication logs for suspicious activities that might indicate exploitation attempts.
  5. Consider implementing additional authentication mechanisms as a defense-in-depth measure.
  6. Review and update security policies related to identity and access management.

References

  1. Aviatrix Security Bulletin: https://docs.aviatrix.com/HowTos/security_bulletin_article.html#xml-signature-wrapping-in-saml
  2. MITRE CWE-347 (Improper Verification of Cryptographic Signature): https://cwe.mitre.org/data/definitions/347.html
  3. OWASP SAML Security Cheat Sheet: https://cheatsheetseries.owasp.org/cheatsheets/SAML_Security_Cheat_Sheet.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. Arts, Entertainment & Recreation: Low
    Arts, Entertainment & Recreation
  2. Health Care & Social Assistance: Low
    Health Care & Social Assistance
  3. Other Services (except Public Administration): Low
    Other Services (except Public Administration)
  4. Accommodation & Food Services: Low
    Accommodation & Food Services
  5. Administrative, Support, Waste Management & Remediation Services: Low
    Administrative, Support, Waste Management & Remediation Services
  6. Agriculture, Forestry Fishing & Hunting: Low
    Agriculture, Forestry Fishing & Hunting
  7. Construction: Low
    Construction
  8. Educational Services: Low
    Educational Services
  9. Finance and Insurance: Low
    Finance and Insurance
  10. Information: Low
    Information
  11. Management of Companies & Enterprises: Low
    Management of Companies & Enterprises
  12. Manufacturing: Low
    Manufacturing
  13. Mining: Low
    Mining
  14. Professional, Scientific, & Technical Services: Low
    Professional, Scientific, & Technical Services
  15. Public Administration: Low
    Public Administration
  16. Real Estate Rental & Leasing: Low
    Real Estate Rental & Leasing
  17. Retail Trade: Low
    Retail Trade
  18. Transportation & Warehousing: Low
    Transportation & Warehousing
  19. Utilities: Low
    Utilities
  20. Wholesale Trade: Low
    Wholesale Trade

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

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