CVE-2009-2743 in WebSphere Application Server
Summary
by MITRE
IBM WebSphere Application Server (WAS) 6.1 before 6.1.0.27, and 7.0 before 7.0.0.7, does not properly handle an exception occurring after use of wsadmin scripts and configuration of JAAS-J2C Authentication Data, which allows local users to obtain sensitive information by reading the First Failure Data Capture (FFDC) log file.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 03/30/2025
IBM WebSphere Application Server versions 6.1 before 6.1.0.27 and 7.0 before 7.0.0.7 contain a critical information disclosure vulnerability that stems from improper exception handling within the wsadmin scripting environment. This vulnerability specifically manifests when the system encounters exceptions during the execution of wsadmin scripts that configure JAAS-J2C Authentication Data. The flaw exists in the way the application server manages and logs exception information, creating a scenario where sensitive authentication data becomes accessible through the First Failure Data Capture logging mechanism. The FFDC logs are designed to capture diagnostic information during system failures, but in this case they inadvertently expose confidential details that should remain protected.
The technical implementation of this vulnerability involves the interaction between the wsadmin scripting interface and the server's authentication subsystem. When authentication data is configured through JAAS-J2C components and subsequent exceptions occur during script execution, the system fails to sanitize the exception data before logging it to FFDC files. This improper sanitization allows local attackers to access these log files and extract sensitive information including authentication credentials, connection details, and other proprietary data that should be protected. The vulnerability is classified as a local privilege escalation issue since it requires local system access to read the FFDC files, but the impact remains severe due to the sensitive nature of the exposed data.
From an operational perspective, this vulnerability presents significant risks to organizations using affected WebSphere Application Server versions. The exposure of authentication data through FFDC logs can lead to unauthorized access to backend systems, database connections, and other critical infrastructure components. Attackers who gain local access to the server can easily extract sensitive information that may include user credentials, service account details, and connection string parameters. The vulnerability aligns with CWE-200, which addresses improper information exposure, and represents a clear violation of the principle of least privilege. Organizations may face compliance violations under various regulatory frameworks including pci dss, hipaa, and soc 2 when sensitive data is exposed through such mechanisms.
The attack vector for this vulnerability requires local system access, making it less likely to be exploited remotely but still poses a substantial risk in environments where local access is possible or where insider threats exist. The exploitation process involves executing wsadmin scripts that trigger exceptions during JAAS-J2C authentication configuration, followed by reading the resulting FFDC log files. This vulnerability impacts the confidentiality aspect of the CIA triad and can be categorized under the ATT&CK technique T1005, which involves data from local system storage. The lack of proper exception handling and logging sanitization creates a persistent exposure window that can be exploited multiple times during the server's operational lifecycle.
Organizations should immediately implement mitigations including upgrading to the patched versions of IBM WebSphere Application Server 6.1.0.27 and 7.0.0.7, which address the improper exception handling behavior. Additional measures include implementing strict file system permissions on FFDC log directories to restrict access to authorized personnel only, configuring log rotation policies to prevent long-term storage of sensitive information, and implementing monitoring solutions to detect unauthorized access attempts to these log files. The remediation process should also include reviewing and sanitizing existing FFDC logs to remove any exposed sensitive data and establishing logging policies that prevent future exposure of authentication credentials through diagnostic logging mechanisms.