CVE-2001-0579 in OpenServer
Summary
by MITRE
lpadmin in SCO OpenServer 5.0.6 can allow a local attacker to gain additional privileges via a buffer overflow attack in the first argument to the command.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 12/31/2024
The vulnerability described in CVE-2001-0579 represents a critical buffer overflow flaw within the lpadmin utility of SCO OpenServer 5.0.6 operating system. This specific vulnerability resides in the command line argument processing of the lpadmin tool which is used for printer administration tasks within the system. The buffer overflow occurs specifically in the handling of the first argument passed to the lpadmin command, making it susceptible to exploitation by local attackers who possess basic system access. The flaw stems from inadequate input validation and bounds checking within the lpadmin utility's argument parsing logic, creating an opportunity for malicious input to overwrite adjacent memory locations.
The technical nature of this vulnerability places it squarely within the realm of CWE-121, which categorizes stack-based buffer overflow conditions. Attackers can exploit this weakness by crafting malicious input that exceeds the allocated buffer space, thereby overwriting critical memory segments including return addresses and system privileges. The lpadmin utility typically operates with elevated privileges due to its administrative function, making this local privilege escalation attack particularly dangerous. When the first argument is processed without proper bounds checking, an attacker can manipulate the program execution flow to gain higher system privileges than initially intended. This type of vulnerability is classified under the ATT&CK technique T1068, which covers 'Exploitation for Privilege Escalation' and specifically addresses local privilege escalation through program flaws.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it creates a persistent security weakness that can be exploited by any local user with access to the system. In the context of SCO OpenServer 5.0.6, which was designed for enterprise environments, this vulnerability could allow an attacker to gain unauthorized access to printer management functions and potentially compromise the entire system. The exploitation process typically involves careful crafting of input data that triggers the buffer overflow, potentially leading to arbitrary code execution within the elevated context of the lpadmin process. The consequences include unauthorized printer configuration changes, potential data exfiltration through compromised printer services, and the establishment of persistent access points within the system.
Mitigation strategies for CVE-2001-0579 should focus on immediate system hardening and patch management. The most effective approach involves applying the official security patches released by SCO to address the specific buffer overflow vulnerability in lpadmin. System administrators should also implement additional security controls such as restricting local user access to administrative utilities and monitoring for suspicious lpadmin command usage. The implementation of address space layout randomization and stack canaries can provide additional defense-in-depth measures against similar buffer overflow exploits. Furthermore, regular security audits should verify that no other applications within the SCO OpenServer environment contain similar input validation flaws. Organizations should also consider implementing the principle of least privilege, ensuring that users only have access to the minimum system functions necessary for their operational requirements. The vulnerability serves as a reminder of the critical importance of input validation and bounds checking in system utilities, particularly those with elevated privileges, and highlights the necessity of regular security assessments to identify and remediate such weaknesses before they can be exploited by malicious actors.