CVE-2007-1784 in Lotus Sametime
Summary
by MITRE
The JNILoader ActiveX control (STJNILoader.ocx) 3.1.0.26 in IBM Lotus Notes Sametime before 7.5 allows remote attackers to load arbitrary DLL libraries and execute arbitrary code via arbitrary arguments to the loadLibrary function.
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Analysis
by VulDB Data Team • 05/08/2017
The vulnerability identified as CVE-2007-1784 affects the JNILoader ActiveX control version 3.1.0.26 in IBM Lotus Notes Sametime prior to version 7.5. This represents a critical security flaw that enables remote attackers to execute arbitrary code on affected systems through manipulation of the loadLibrary function within the STJNILoader.ocx component. The issue stems from inadequate input validation and improper handling of dynamic library loading mechanisms within the ActiveX control, creating a pathway for malicious code execution without user interaction.
The technical flaw manifests through the improper validation of arguments passed to the loadLibrary function within the JNILoader ActiveX control. When the control processes external input without sufficient sanitization, it allows attackers to specify arbitrary DLL paths that can be loaded and executed on the target system. This vulnerability directly maps to CWE-74, known as Improper Neutralization of Special Elements in Output Used by a Downstream Component, and CWE-427, Improper Neutralization of Special Elements in Output Used by a Downstream Component, as it involves the improper handling of dynamic library loading operations. The vulnerability exists because the ActiveX control does not properly validate or sanitize the library paths provided as arguments, allowing attackers to reference malicious DLL files that can be loaded into memory and executed with the privileges of the affected application.
The operational impact of this vulnerability is severe and far-reaching within enterprise environments that utilize IBM Lotus Notes Sametime. Attackers can leverage this flaw to execute arbitrary code with the privileges of the Sametime client process, potentially leading to complete system compromise, data exfiltration, and lateral movement within the network. The vulnerability is particularly dangerous because it operates through ActiveX controls that are often enabled by default in Internet Explorer environments, making exploitation relatively straightforward for attackers who can deliver malicious payloads through web-based attack vectors. This vulnerability affects the confidentiality, integrity, and availability of enterprise communications systems, as attackers can manipulate the Sametime client to perform unauthorized operations while maintaining persistent access to the compromised system.
Mitigation strategies for CVE-2007-1784 should focus on immediate remediation through the installation of IBM Lotus Notes Sametime version 7.5 or later, which includes patches addressing the vulnerable JNILoader ActiveX control. Organizations should also implement network-level protections through firewall rules that restrict access to potentially vulnerable ActiveX controls and disable ActiveX controls in web browsers where possible. The mitigation approach aligns with ATT&CK technique T1175, which involves the use of ActiveX controls for privilege escalation and code execution. Additionally, security administrators should conduct comprehensive vulnerability assessments to identify all instances of the vulnerable STJNILoader.ocx component and ensure that proper access controls are implemented to limit the potential impact of exploitation. System hardening measures including disabling unnecessary ActiveX controls, implementing application whitelisting policies, and monitoring for suspicious DLL loading activities should be implemented as part of a comprehensive defense-in-depth strategy.