Tivoli Federated Identity Manager Security Assertion Markup Language (SAML) message weak security

tfim-saml-weak-security (71686) The risk level is classified as MediumMedium Risk

Description:

Tivoli Federated Identity Manager could provide weaker than expected security, caused by improper validation of SAML message signature elements. A remote attacker could exploit this vulnerability using man-in-the-middle techniques to launch further attacks against the victim.

*CVSS:

Base Score: 4.3
  Access Vector: Network
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: Partial
  Availability Impact: None
 
Temporal Score: 3.2
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Other

Remedy:

Apply the interim fix for this vulnerability (6.1.1 Interim Fix 12, 6.2.0 Interim Fix 10, or 6.2.1 Fix Pack 2), available from IBM Support & downloads. See References.

References:

  • IBM Support & downloads: IBM Tivoli Federated Identity Manager SAML (Security Assertion Markup Language) non-conformance vulnerability (CVE-2011-1386) * * * * * *.
  • IBM Support & downloads: Tivoli Federated Identity Manager 6.2.1 Fixpack 2 (6.2.1-TIV-TFIM-FP0002).
  • IBM Support & downloads: Tivoli Federated Identity Manager 6.2.0 Interim Fix 10 (6.2.0-TIV-TFIM-IF0010).
  • IBM Support & downloads: Tivoli Federated Identity Manager 6.1.1 Interim Fix 12 (6.1.1-TIV-TFIM-IF0012).
  • BID-51064: IBM Tivoli Federated Identity Manager SAML Signature Validation Security Bypass Vulnerability
  • CVE-2011-1386: IBM Tivoli Federated Identity Manager (TFIM) and Tivoli Federated Identity Manager Business Gateway (TFIMBG) 6.1.1, 6.2.0, and 6.2.1 do not properly handle signature validations based on SAML 1.0, 1.1, and 2.0, which allows remote attackers to bypass intended authentication or authorization requirements via a non-conforming SAML signature.
  • OSVDB ID: 77687: IBM Tivoli Federated Identity Manager SAML Signature Validation Bypass
  • SA47218: IBM Tivoli Federated Identity Manager SAML Signature Validation Security Bypass

Platforms Affected:

  • IBM Tivoli Federated Identity Manager 6.1.1
  • IBM Tivoli Federated Identity Manager 6.2.0
  • IBM Tivoli Federated Identity Manager 6.2.1

Reported:

Dec 07, 2011

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