CVE-2016-0382 in Tealeaf Consumer Experience
Summary
by MITRE
The IBM Tealeaf Consumer Experience 8.7, 8.8, and 9.0 portal exposes some of its operational state in a form that may be accidentally captured and exposed by network infrastructure components such as IIS. IBM X-Force ID: 112356.
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Analysis
by VulDB Data Team • 09/23/2020
The vulnerability identified as CVE-2016-0382 affects IBM Tealeaf Consumer Experience versions 8.7, 8.8, and 9.0 portal implementations, representing a significant information disclosure risk within enterprise web applications. This flaw manifests when the portal inadvertently exposes operational state information through mechanisms that can be captured by intermediate network infrastructure components, particularly Internet Information Services IIS servers. The vulnerability stems from insufficient input validation and output sanitization within the application's response handling mechanisms, creating opportunities for sensitive operational data to be transmitted in cleartext or improperly formatted responses. The exposure occurs at the network layer where infrastructure components process and potentially log application responses, making it particularly dangerous in environments where multiple network devices handle traffic between clients and servers. This type of vulnerability aligns with CWE-200, which categorizes information exposure flaws, and represents a classic example of how application-level data handling can create security risks at network infrastructure boundaries.
The technical implementation of this vulnerability involves the portal's failure to properly sanitize or filter operational state information before it reaches network infrastructure components. When users interact with the Tealeaf portal, certain responses contain operational metadata that should remain confidential or be appropriately protected. The IIS components in the network path may capture and log these responses, potentially storing sensitive operational details in accessible locations. This exposure can include session identifiers, internal system information, configuration details, or other operational artifacts that provide attackers with insights into the application's internal workings. The vulnerability's impact is amplified by the fact that network infrastructure components often maintain logs for extended periods, creating persistent exposure windows. This flaw demonstrates how modern web applications can inadvertently create security risks through improper handling of application state information, particularly when the application does not consider the security implications of how its responses are processed by intermediate network components.
The operational impact of this vulnerability extends beyond simple information disclosure, as it can enable attackers to gain intelligence about the target environment and application configuration. An attacker who can capture these exposed operational states may use the information to plan more sophisticated attacks, identify potential entry points, or understand the application's architecture and deployment patterns. The exposure of operational state data can also facilitate credential harvesting, session hijacking attempts, or other attacks that leverage the information to compromise system integrity. In enterprise environments where Tealeaf is deployed, this vulnerability can provide attackers with sufficient information to conduct targeted attacks against the application or its underlying infrastructure. The risk is particularly concerning in environments with multiple network devices handling traffic, as the exposure may be captured by various components including load balancers, firewalls, proxies, or logging servers. This type of vulnerability represents a significant concern for organizations following security frameworks such as NIST SP 800-53, which emphasizes the importance of protecting system information and preventing unauthorized disclosure of operational state data.
Organizations should implement comprehensive mitigations to address this vulnerability, including updating to patched versions of IBM Tealeaf Consumer Experience, configuring network infrastructure components to filter or sanitize potentially sensitive responses, and implementing proper input validation and output encoding mechanisms within the application itself. The remediation process should involve thorough testing of network logging components to ensure that operational state information is not being inadvertently captured or stored. Security controls should be implemented to prevent network infrastructure from logging sensitive application responses, with particular attention to IIS configuration settings and logging parameters. Organizations should also consider implementing network segmentation and monitoring to detect unusual patterns in network traffic that might indicate exploitation attempts. This vulnerability highlights the importance of following security best practices such as those outlined in the OWASP Top Ten and MITRE ATT&CK framework, particularly in areas related to information disclosure and network security. The remediation process should include comprehensive security testing and validation to ensure that the vulnerability has been properly addressed without introducing new security issues. Regular security assessments and vulnerability scanning should be conducted to identify similar exposure risks within the broader network infrastructure and application ecosystem.