CVE-2008-4418 in HP-UX
Summary
by MITRE
Unspecified vulnerability in DCE in HP HP-UX B.11.11, B.11.23, and B.11.31 allows remote attackers to cause a denial of service via unknown vectors.
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Analysis
by VulDB Data Team • 05/25/2025
The vulnerability identified as CVE-2008-4418 represents a critical security flaw within the Distributed Computing Environment DCE implementation on HP-UX operating systems. This issue affects multiple versions including B.11.11, B.11.23, and B.11.31, indicating a widespread exposure across the HP-UX platform lineage. The vulnerability resides in the DCE subsystem which provides distributed computing capabilities enabling applications to communicate across networked systems. The unspecified nature of the vulnerability vectors suggests that the flaw could manifest through various attack pathways, making it particularly challenging to defend against and remediate. The DCE service is fundamental to HP-UX systems, providing RPC (Remote Procedure Call) services that are essential for system administration and inter-process communication.
The technical flaw within the DCE implementation creates a condition where remote attackers can exploit the system to trigger a denial of service state. This type of vulnerability falls under the category of availability attacks as defined by the Common Weakness Enumeration framework, specifically aligning with CWE-119 which encompasses weaknesses related to memory access violations. The attack vector operates remotely without requiring authentication, making it particularly dangerous for systems exposed to untrusted networks. The unspecified nature of the attack vectors suggests potential issues related to buffer overflows, improper input validation, or resource exhaustion within the DCE service handling mechanisms. These vulnerabilities typically arise from inadequate bounds checking or improper state management within the distributed computing services.
The operational impact of this vulnerability extends beyond simple service disruption to potentially compromise the entire system stability and availability. When exploited, the denial of service condition can render critical system services inaccessible, affecting system administrators who rely on DCE for remote management and system monitoring. The vulnerability's presence in multiple HP-UX versions indicates that organizations running these systems face significant risk without proper mitigation measures. The distributed computing environment typically handles sensitive system operations, making this vulnerability particularly concerning for enterprise environments where system availability is paramount. The attack can result in cascading failures affecting multiple dependent services and potentially requiring system restarts to restore normal operations.
Mitigation strategies for CVE-2008-4418 should prioritize immediate patch application from HP as the primary defense mechanism. Organizations should implement network segmentation to limit access to DCE services and restrict exposure to trusted networks only. The principle of least privilege should be enforced by disabling unnecessary DCE services and restricting access based on specific system requirements. Network monitoring should be enhanced to detect anomalous DCE traffic patterns that might indicate exploitation attempts. System administrators should implement regular vulnerability assessments and maintain updated security configurations. The ATT&CK framework categorizes this vulnerability under privilege escalation and denial of service tactics, suggesting that defensive measures should include monitoring for unusual service behavior and implementing robust network access controls. Additionally, organizations should consider implementing intrusion detection systems specifically configured to identify DCE-related attack patterns and maintain comprehensive incident response procedures for rapid mitigation of exploitation attempts.