CVE-2012-3314 in Tivoli Federated Identity Manager
Summary
by MITRE
IBM Tivoli Federated Identity Manager (TFIM) and Tivoli Federated Identity Manager Business Gateway (TFIMBG) 6.1.1, 6.2.0, 6.2.1, and 6.2.2 allow remote attackers to establish sessions via a crafted message that leverages (1) a signature-validation bypass for SAML messages containing unsigned elements, (2) incorrect validation of XML messages, or (3) a certificate-chain validation bypass for an XML signature element that contains the signing certificate.
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Analysis
by VulDB Data Team • 04/14/2021
The vulnerability identified as CVE-2012-3314 affects IBM Tivoli Federated Identity Manager and its Business Gateway components, specifically versions 6.1.1 through 6.2.2. This security flaw represents a critical weakness in the federated identity management system that could enable unauthorized access to protected resources through manipulated authentication messages. The vulnerability stems from multiple interconnected issues within the SAML (Security Assertion Markup Language) message processing and validation mechanisms that are fundamental to federated identity operations.
The technical exploitation of this vulnerability occurs through three distinct attack vectors that collectively undermine the security of the authentication process. The first vector involves a signature-validation bypass that allows attackers to craft SAML messages containing unsigned elements while still maintaining the appearance of legitimate authentication requests. This bypass directly violates the core principle of digital signatures in SAML implementations, which are designed to ensure message integrity and authenticity. The second vector exploits incorrect validation of XML messages, where the system fails to properly parse or validate the structure of XML documents, potentially allowing malicious payloads to be injected or processed incorrectly. The third vector targets certificate-chain validation bypass for XML signature elements, enabling attackers to substitute or manipulate signing certificates without detection, effectively allowing forged signatures to be accepted as legitimate.
This vulnerability creates significant operational impact within enterprise environments that rely on federated identity management for single sign-on operations and cross-domain authentication. Attackers who successfully exploit this vulnerability can establish unauthorized sessions with the affected systems, potentially gaining access to sensitive corporate resources, user credentials, and protected data. The implications extend beyond simple authentication bypass, as the compromised systems may serve as entry points for further attacks within the network infrastructure. Organizations using these components face risks of data breaches, unauthorized access to privileged systems, and potential compromise of the entire federated identity ecosystem that depends on trust relationships established through these vulnerable systems.
The attack patterns associated with CVE-2012-3314 align with several techniques documented in the ATT&CK framework, particularly those related to credential access and initial access phases. The signature validation bypass directly maps to techniques involving manipulation of digital signatures and certificate validation, while the XML message validation flaws correspond to XML external entity processing and input validation attacks. Organizations should implement immediate mitigations including patching to the latest available versions of IBM Tivoli Federated Identity Manager, strengthening certificate validation policies, and implementing additional monitoring for suspicious authentication patterns. The vulnerability also highlights the importance of proper XML security configurations and adherence to security standards such as those defined in the CWE database, specifically CWE-347 for improper certificate validation and CWE-348 for use of insecure or weak cryptographic algorithms. Organizations should also consider implementing network segmentation, enhanced logging and monitoring of authentication events, and regular security assessments of federated identity components to prevent exploitation of similar vulnerabilities in their infrastructure.