CVE-2004-0544 in AIX
Summary
by MITRE
Multiple buffer overflows in LVM for AIX 5.1 and 5.2 allow local users to gain privileges via the (1) putlvcb or (2) getlvcb commands.
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Analysis
by VulDB Data Team • 06/05/2024
The vulnerability described in CVE-2004-0544 represents a critical security flaw in the Logical Volume Manager implementation on IBM AIX operating systems version 5.1 and 5.2. This issue affects the fundamental storage management components that handle logical volume control blocks, creating potential pathways for privilege escalation attacks. The vulnerability specifically targets two command interfaces within the LVM subsystem that process control block data, making it particularly dangerous as these commands are integral to system storage management operations.
The technical implementation of this vulnerability stems from inadequate input validation within the putlvcb and getlvcb command handlers. These commands process data structures containing logical volume control block information without proper bounds checking mechanisms, allowing malicious input to overflow allocated buffer space. When buffer overflows occur in this context, they can overwrite adjacent memory regions including return addresses and control data structures, enabling attackers to manipulate program execution flow. The flaw operates at the kernel level within the LVM subsystem, making it particularly severe as it can be exploited by local users who already have system access.
The operational impact of this vulnerability extends beyond simple privilege escalation to potentially compromise entire system security postures. Local users who can execute these commands gain the ability to elevate their privileges to root level access, which provides complete control over system resources, file access, and network operations. This represents a significant escalation from standard user privileges to administrative control, effectively allowing attackers to bypass all other system security controls. The vulnerability affects systems where LVM is actively used for storage management, making it particularly concerning for enterprise environments that rely on AIX for mission-critical operations.
Security mitigations for this vulnerability require immediate patch application from IBM, as the flaw cannot be adequately addressed through configuration changes alone. System administrators should implement comprehensive monitoring of LVM command usage and establish privilege auditing procedures to detect potential exploitation attempts. The vulnerability aligns with CWE-121, heap-based buffer overflow, and represents a clear example of how storage management subsystems can become attack vectors. From an attacker perspective, this vulnerability maps to ATT&CK technique T1068, "Exploitation for Privilege Escalation," and T1548.001, "Abuse Elevation Control Mechanism." Organizations should also consider implementing mandatory access controls and privilege separation measures to reduce the potential impact of such vulnerabilities in their environments.