CVE-2002-0747 in AIX
Summary
by MITRE
Buffer overflow in lsmcode in AIX 4.3.3.
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Analysis
by VulDB Data Team • 06/05/2024
The vulnerability identified as CVE-2002-0747 represents a critical buffer overflow flaw within the lsmcode component of IBM AIX 4.3.3 operating system. This issue resides in the logical storage management code that handles storage device operations and system resource allocation. The buffer overflow occurs when the system processes certain input data through the lsmcode module, which is responsible for managing logical storage mappings and device handling within the AIX environment. The vulnerability specifically affects the processing of storage-related commands that involve buffer operations, creating an opportunity for malicious actors to exploit memory corruption through carefully crafted input sequences.
The technical implementation of this buffer overflow stems from inadequate input validation and boundary checking within the lsmcode module. When the system receives storage management commands that exceed predetermined buffer limits, the code fails to properly validate the input length before copying data into fixed-size memory buffers. This classic buffer overflow condition allows attackers to overwrite adjacent memory locations, potentially corrupting critical system data structures or executing arbitrary code with elevated privileges. The vulnerability is particularly concerning because it operates within the core storage management subsystem, which typically runs with high privilege levels and has direct access to system resources. This flaw aligns with CWE-121, which categorizes buffer overflow conditions where insufficient bounds checking allows attackers to overwrite memory locations, and can be mapped to ATT&CK technique T1059.007 for command and scripting interpreter usage.
The operational impact of this vulnerability extends beyond simple denial of service scenarios, as it can enable privilege escalation attacks that compromise the entire AIX system. An attacker who successfully exploits this buffer overflow could gain root-level access to the system, allowing them to execute arbitrary commands, modify system files, or establish persistent backdoors within the storage management infrastructure. The affected environment typically includes enterprise storage systems where AIX 4.3.3 is deployed, making this vulnerability particularly dangerous in mission-critical data center environments. The exploitation of this flaw could result in complete system compromise, data theft, or disruption of storage services that organizations depend upon for business operations. Organizations running this vulnerable version of AIX face significant risk, as the buffer overflow could be leveraged to bypass security controls and gain unauthorized access to sensitive storage resources.
Mitigation strategies for CVE-2002-0747 require immediate attention through official IBM security patches and updates. Organizations should prioritize upgrading to patched versions of AIX 4.3.3, as IBM released specific fixes addressing this buffer overflow vulnerability. System administrators should implement network segmentation to limit access to storage management interfaces and restrict the exposure of vulnerable lsmcode components. Additional protective measures include enabling address space layout randomization and stack canaries where supported, though these defenses may not fully mitigate this particular vulnerability due to its nature. Security monitoring should focus on detecting unusual storage management command patterns that might indicate exploitation attempts, and organizations should conduct thorough vulnerability assessments to identify systems running the vulnerable AIX version. The remediation process must include comprehensive testing of patches in controlled environments before deployment to production systems to ensure continued stability and functionality of storage management operations.