CVE-2007-6705 in WebSphere MQ
Summary
by MITRE
The WebSphere MQ XA 5.3 before FP13 and 6.0.x before 6.0.2.1 client for Windows, when running in an MTS or a COM+ environment, grants the PROCESS_DUP_HANDLE privilege to the Everyone group upon connection to a queue manager, which allows local users to duplicate an arbitrary handle and possibly hijack an arbitrary process.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 11/04/2017
The vulnerability identified as CVE-2007-6705 represents a critical privilege escalation flaw within IBM WebSphere MQ XA client components, specifically affecting versions prior to the respective fixpacks. This security issue manifests when the WebSphere MQ XA client operates within Microsoft Transaction Server or COM+ environments, creating a dangerous permission configuration that fundamentally undermines system security boundaries. The flaw exists in the client's process creation and handle management mechanisms, where the system inadvertently grants excessive privileges to the Everyone security group, creating an exploitable condition that local attackers can leverage for malicious purposes.
The technical implementation of this vulnerability stems from improper privilege assignment during the connection process to a queue manager. When the WebSphere MQ XA client connects to a queue manager in MTS or COM+ environments, it automatically configures the PROCESS_DUP_HANDLE privilege for the Everyone group, which is a fundamental Windows security misconfiguration. This privilege allows processes to duplicate handles from other processes, effectively creating a pathway for privilege escalation attacks. The vulnerability occurs because the client application does not properly restrict the security context under which it operates, particularly in environments where process isolation is critical for maintaining security boundaries. This misconfiguration creates a scenario where any local user can exploit this weakness to duplicate handles and potentially assume the identity and privileges of other processes running on the system.
The operational impact of CVE-2007-6705 is significant and potentially devastating for organizations relying on WebSphere MQ in transactional environments. Attackers can leverage this vulnerability to escalate privileges from standard user level to higher privilege levels, potentially gaining access to sensitive system resources, data, or administrative functions. The ability to duplicate arbitrary handles means that an attacker could potentially hijack processes running with elevated privileges, such as those belonging to system administrators or other critical services. This vulnerability particularly affects environments where WebSphere MQ is used in conjunction with COM+ or MTS, which are common in enterprise application integration scenarios where transactional integrity and security are paramount. The local nature of the attack does not require network access or remote exploitation, making it particularly dangerous as it can be exploited by users who already have basic system access.
Organizations should implement immediate mitigations including applying the relevant IBM fixpacks that address this privilege escalation vulnerability, specifically FP13 for version 5.3 and 6.0.2.1 for version 6.0.x. Security administrators should also consider implementing additional protective measures such as restricting local user access to systems running WebSphere MQ, implementing proper network segmentation, and monitoring for unusual handle duplication activities. The vulnerability aligns with CWE-276, which specifically addresses improper privilege assignment in software systems, and represents a clear violation of the principle of least privilege. From an ATT&CK framework perspective, this vulnerability maps to privilege escalation techniques and could be categorized under T1068, which covers bypassing user access control mechanisms, making it a critical concern for security teams implementing comprehensive threat hunting and incident response procedures.
This vulnerability demonstrates the importance of proper privilege management in distributed transaction processing systems and highlights how seemingly minor security misconfigurations can create significant attack vectors. The flaw underscores the necessity of conducting thorough security reviews of application components, particularly those that interface with operating system security mechanisms. Organizations should also consider implementing automated security scanning tools to identify similar privilege escalation vulnerabilities in their software environments, as this type of issue can be particularly persistent across multiple versions and platforms. The remediation process requires careful testing to ensure that the fixpacks do not introduce compatibility issues with existing applications while maintaining the security benefits of proper privilege assignment.