CVE-2009-5034 in Lotus Notes Traveler
Summary
by MITRE
IBM Lotus Notes Traveler before 8.5.0.2 allows remote authenticated users to cause a denial of service (memory consumption and daemon crash) by syncing a large volume of data, related to the launch of a new process to handle the data while the previous process is still operating on the data.
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Analysis
by VulDB Data Team • 01/08/2018
The vulnerability identified as CVE-2009-5034 affects IBM Lotus Notes Traveler versions prior to 8.5.0.2, representing a significant denial of service weakness that can be exploited by authenticated remote attackers. This issue manifests when the system processes large volumes of data through synchronization operations, creating a resource exhaustion scenario that ultimately leads to daemon crashes and system unavailability. The flaw specifically relates to the application's handling of concurrent processes during data synchronization, where the launch of new processes occurs without proper coordination with existing process execution, creating a dangerous overlap that consumes excessive memory resources.
The technical root cause of this vulnerability stems from improper process management within the Lotus Notes Traveler synchronization mechanism. When authenticated users initiate data sync operations with substantial data volumes, the system spawns new processes to handle the incoming data while older processes remain active and processing previous data sets. This concurrent execution pattern creates a memory leak scenario where system resources accumulate without proper cleanup, eventually leading to memory exhaustion. The vulnerability aligns with CWE-400, which categorizes unchecked resource consumption as a critical weakness, and demonstrates how inadequate process lifecycle management can result in system instability and denial of service conditions.
The operational impact of this vulnerability extends beyond simple service disruption, as it can severely compromise the availability and reliability of email and calendar services for organizations relying on IBM Lotus Notes Traveler. Attackers with valid credentials can systematically consume system resources through repeated synchronization attempts with large data sets, causing the daemon processes to crash and requiring manual intervention for system recovery. This vulnerability particularly affects enterprise environments where mobile device synchronization is critical for business continuity, as the denial of service can disrupt communication workflows and potentially impact productivity across multiple users simultaneously.
Organizations should implement immediate mitigations including applying the vendor-provided patch for IBM Lotus Notes Traveler version 8.5.0.2 or later, which addresses the process management flaw through improved resource coordination and cleanup mechanisms. System administrators should also consider implementing rate limiting and data volume controls to prevent single users from exhausting system resources through excessive synchronization operations. The ATT&CK framework categorizes this vulnerability under privilege escalation and resource exhaustion tactics, as it leverages authenticated access to consume system resources and disrupt service availability. Additionally, monitoring and logging mechanisms should be enhanced to detect unusual synchronization patterns that might indicate exploitation attempts, while network segmentation can help limit the potential impact of such attacks by isolating critical services from less secure network segments.