CVE-2016-5976 in Tealeaf Customer Experience
Summary
by MITRE
The web portal in IBM Tealeaf Customer Experience before 8.7.1.8847 FP10, 8.8 before 8.8.0.9049 FP9, 9.0.0 and 9.0.1 before 9.0.1.1117 FP5, 9.0.1A before 9.0.1.5108_9.0.1A FP5, 9.0.2 before 9.0.2.1223 FP3, and 9.0.2A before 9.0.2.5224_9.0.2A FP3 allows remote authenticated users to discover component passwords via unspecified vectors.
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Analysis
by VulDB Data Team • 04/26/2019
The vulnerability identified as CVE-2016-5976 affects IBM Tealeaf Customer Experience web portal implementations across multiple version ranges, representing a critical information disclosure flaw that undermines the security posture of customer experience monitoring systems. This vulnerability specifically targets the authentication and authorization mechanisms within the web portal interface, creating an avenue for remote attackers who have already established legitimate credentials to escalate their access privileges. The flaw manifests through unspecified vectors that allow authenticated users to extract component passwords, effectively compromising the confidentiality of sensitive authentication material within the system. The vulnerability exists in versions prior to specific fixpacks including 8.7.1.8847 FP10, 8.8.0.9049 FP9, 9.0.1.1117 FP5, 9.0.1A FP5, 9.0.2.1223 FP3, and 9.0.2A FP3, indicating that IBM released targeted patches to address this specific weakness. The technical nature of this vulnerability aligns with CWE-200, which categorizes weaknesses related to information exposure, and represents a direct violation of the principle of least privilege as attackers can leverage existing authenticated sessions to discover additional credentials. From an operational perspective, this vulnerability poses significant risk to organizations relying on IBM Tealeaf for customer experience analytics, as component passwords often provide access to underlying databases, backend services, and additional system components that could be exploited for further compromise. The impact extends beyond simple credential theft, as these discovered passwords may grant access to sensitive customer data, system configuration information, and potentially enable lateral movement within the network infrastructure. The vulnerability's classification under ATT&CK framework would align with T1078 for valid accounts and T1566 for credential access, as it enables attackers to obtain legitimate credentials through legitimate access paths. Organizations utilizing affected versions face potential exposure to attackers who could use these discovered passwords to gain deeper system access, potentially leading to data breaches, system compromise, or unauthorized modification of customer experience monitoring configurations. The attack vector requires only authenticated access, making it particularly dangerous as it can be exploited by insiders or attackers who have already obtained legitimate credentials through other means such as phishing or credential theft campaigns.
The exploitation of this vulnerability demonstrates a fundamental flaw in the privilege separation mechanisms within the IBM Tealeaf web portal, where the system fails to properly enforce access controls on sensitive credential information. This weakness represents a design flaw in the system's information hiding principles, where component passwords should be protected from unauthorized access even within authenticated sessions. The unspecified vectors suggest that the vulnerability may stem from inadequate input validation, improper session management, or insufficient access control checks when processing requests for component information. Security researchers would classify this as a privilege escalation vulnerability within the context of authenticated users, where the system's access control policies are not properly enforced. The vulnerability's existence across multiple major releases indicates a persistent architectural issue that was not adequately addressed in the system's security design, potentially reflecting a broader problem with how IBM implemented credential management within their Tealeaf platform. The fact that this vulnerability affects both major version lines 9.0.0 and 9.0.1, as well as the A-series releases, suggests that the underlying flaw is present in the core component architecture rather than being isolated to specific patches or updates. This widespread impact indicates that organizations running any of these affected versions should consider the vulnerability as a critical security concern requiring immediate remediation.
Mitigation strategies for CVE-2016-5976 should prioritize the immediate application of the relevant IBM fixpacks and service updates to all affected systems. Organizations should implement comprehensive vulnerability management processes that include regular scanning for affected IBM Tealeaf installations and ensuring all systems are updated to supported versions. Network segmentation and access control measures should be strengthened to limit the potential impact of credential exposure, including implementing strict firewall rules and monitoring for unusual access patterns to web portal components. The implementation of principle of least privilege should be reinforced, ensuring that authenticated users have access only to the specific components necessary for their roles rather than broad access to system credentials. Security monitoring should include detection of unusual requests for component information and password-related access patterns that could indicate exploitation attempts. Additionally, organizations should conduct thorough credential rotation exercises, particularly for component passwords that may have been exposed through this vulnerability. The vulnerability highlights the importance of proper access control implementation and the need for regular security assessments of authentication and authorization mechanisms. Organizations should also consider implementing additional security controls such as multi-factor authentication for web portal access and enhanced logging and monitoring of administrative activities. Regular security training for system administrators should emphasize the importance of keeping software updated and understanding the implications of credential exposure in monitoring systems. The vulnerability serves as a reminder of the critical importance of maintaining current security patches and the potential consequences of running unsupported software versions in production environments.