CVE-2006-5265 in Dynamics GP
Summary
by MITRE
Unspecified vulnerability in Microsoft Dynamics GP (formerly Great Plains) 9.0 and earlier allows remote attackers to cause a denial of service (crash) via an invalid magic number in a Distributed Process Server (DPS) message.
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Analysis
by VulDB Data Team • 08/12/2019
The vulnerability identified as CVE-2006-5265 represents a critical denial of service flaw within Microsoft Dynamics GP version 9.0 and earlier systems. This issue specifically targets the Distributed Process Server component which serves as a communication layer for distributed processing tasks within the enterprise resource planning environment. The vulnerability manifests when the DPS service receives malformed messages containing invalid magic numbers, which are typically used to identify and validate the integrity of communication protocols between distributed components. The absence of proper validation mechanisms for these magic number values creates an exploitable condition that can be leveraged by remote attackers to disrupt normal system operations.
The technical implementation of this vulnerability stems from inadequate input validation within the DPS message handling routines. Magic numbers serve as protocol identifiers that help ensure communication integrity and proper routing of messages between distributed processes. When an attacker crafts a malicious DPS message with an invalid magic number, the system fails to properly handle this unexpected input, leading to system instability and eventual crash conditions. This flaw operates at the protocol level where the system does not adequately sanitize incoming data before processing, creating a pathway for malformed data to propagate through the system's message handling infrastructure. The vulnerability is classified under CWE-20 as "Improper Input Validation" which specifically addresses issues where systems fail to properly validate or sanitize input data before processing, making it susceptible to various forms of exploitation including denial of service attacks.
From an operational perspective, this vulnerability presents significant risks to organizations utilizing Microsoft Dynamics GP 9.0 or earlier versions in production environments. The remote nature of the attack means that adversaries can exploit this flaw without requiring local system access or authentication credentials, making it particularly dangerous in networked environments where the DPS service is exposed to external networks. The resulting denial of service condition can disrupt business operations by causing the Distributed Process Server to crash, which in turn affects critical business processes such as financial transactions, inventory management, and order processing. Organizations relying on the integrated functionality of Dynamics GP may experience extended downtime while system administrators work to restore service, potentially leading to financial losses and operational disruption.
The attack vector for this vulnerability aligns with the MITRE ATT&CK framework under the T1499.004 technique for "Network Denial of Service" where adversaries target network services to prevent legitimate users from accessing resources. This particular exploit demonstrates how protocol-level flaws can be leveraged to create cascading failures within enterprise applications. The impact extends beyond simple service interruption as the crash may result in data inconsistencies or loss of transactional integrity within the Dynamics GP environment. Organizations should consider implementing network segmentation strategies to limit exposure of the DPS service to untrusted networks, while also ensuring that all systems are updated to patched versions that properly validate magic number values. The vulnerability highlights the importance of robust input validation mechanisms and proper error handling in distributed systems, particularly those handling critical business data and processes.
Mitigation strategies should include immediate application of Microsoft security patches or updates that address the input validation weakness in the DPS component. Organizations should also implement network monitoring solutions to detect anomalous DPS message patterns that might indicate exploitation attempts. Additionally, access controls should be enforced to limit exposure of the Distributed Process Server to only trusted network segments, reducing the attack surface available to potential adversaries. System administrators should consider implementing automated monitoring and alerting mechanisms to detect service disruptions and quickly respond to potential exploitation attempts. The vulnerability serves as a reminder of the critical importance of maintaining up-to-date security patches and implementing defense-in-depth strategies that include both network-level controls and application-level protections to prevent similar issues from compromising enterprise systems.