CVE-2001-0578 in OpenServer
Summary
by MITRE
Buffer overflow in lpforms in SCO OpenServer 5.0-5.0.6 can allow a local attacker to gain additional privileges via a long first argument to the lpforms command.
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Analysis
by VulDB Data Team • 12/30/2024
The vulnerability identified as CVE-2001-0578 represents a classic buffer overflow flaw within the lpforms utility of SCO OpenServer operating systems version 5.0 through 5.0.6. This issue resides in the command line argument processing mechanism of the lpforms program, which is typically used for managing print job forms and related configurations within the system. The buffer overflow occurs specifically when the program processes the first argument provided to it, making it a prime target for local privilege escalation attacks. The flaw stems from inadequate input validation and bounds checking within the lpforms command implementation, allowing maliciously crafted input to overwrite adjacent memory locations.
The technical exploitation of this vulnerability leverages the fundamental principle of buffer overflow attacks where insufficient bounds checking permits data to be written beyond the allocated memory buffer. When a local attacker provides an excessively long first argument to the lpforms command, the program fails to properly validate the input length, causing the overflow to occur in the stack memory region. This memory corruption can potentially overwrite critical program execution data such as return addresses, function pointers, or other control structures. The vulnerability is particularly concerning because it operates at the local user level, meaning any user with access to the system can attempt exploitation, and successful exploitation typically results in privilege escalation to the root level or equivalent administrative privileges.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it provides attackers with a foothold for further system compromise within the SCO OpenServer environment. Once escalated privileges are obtained, attackers can manipulate system configurations, access sensitive data, modify critical system files, and potentially establish persistent access. The vulnerability affects the broader security posture of systems running SCO OpenServer 5.0-5.0.6, as it represents an entry point for attackers to gain unauthorized administrative control. This issue aligns with CWE-121, which categorizes buffer overflow conditions where insufficient bounds checking allows memory to be overwritten, and can be mapped to ATT&CK technique T1068 which covers 'Exploitation for Privilege Escalation' in the adversary tactics framework. The vulnerability demonstrates the critical importance of proper input validation and memory management in system utilities, particularly those with elevated privileges.
Mitigation strategies for CVE-2001-0578 should focus on immediate patching of the affected SCO OpenServer versions, as no effective workarounds exist for this specific buffer overflow condition. System administrators must ensure that all SCO OpenServer systems are updated to patched versions that properly validate input arguments to the lpforms command. Additionally, implementing proper access controls and limiting local user privileges can reduce the potential impact of exploitation. Security monitoring should include detection of unusual lpforms command usage patterns, and system hardening measures should be applied to restrict unnecessary access to the affected utility. The vulnerability underscores the importance of maintaining up-to-date system patches and implementing robust input validation practices in all system components, particularly those with elevated privilege requirements. Organizations should also consider implementing intrusion detection systems to monitor for exploitation attempts targeting similar buffer overflow vulnerabilities within their network infrastructure.