CVE-2000-0446 in MDBMS
Summary
by MITRE
Buffer overflow in MDBMS database server allows remote attackers to execute arbitrary commands via a long string.
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Analysis
by VulDB Data Team • 10/14/2025
The vulnerability identified as CVE-2000-0446 represents a critical buffer overflow flaw within the MDBMS database server software that fundamentally compromises system security through remote code execution capabilities. This issue stems from inadequate input validation mechanisms within the database server's handling of user-supplied data, creating a pathway for malicious actors to exploit the system remotely. The buffer overflow occurs when the MDBMS server processes excessively long string inputs without proper bounds checking, leading to memory corruption that can be leveraged by attackers to execute arbitrary code on the affected system.
The technical implementation of this vulnerability aligns with CWE-121, which categorizes buffer overflow conditions that occur when insufficient space is allocated for data storage, allowing attackers to overwrite adjacent memory locations. The flaw manifests specifically in the database server's string processing routines where it fails to validate the length of incoming data before attempting to store it in fixed-size buffers. This allows attackers to craft malicious input sequences that exceed buffer capacity, causing the program to overwrite critical memory segments including return addresses and function pointers. The operational impact extends beyond simple data corruption as the vulnerability enables complete system compromise through remote code execution, potentially allowing attackers to gain administrative privileges and establish persistent access to the database server infrastructure.
From an attack perspective, this vulnerability operates under the MITRE ATT&CK framework's technique T1059.007 for Command and Scripting Interpreter, where attackers can execute commands through the compromised database server. The remote exploitation capability means that attackers do not require local system access or physical presence, making this vulnerability particularly dangerous in networked environments where database servers are accessible from external networks. The attack vector typically involves sending specially crafted database queries or connection strings containing excessively long strings that trigger the buffer overflow condition during processing.
Organizations affected by this vulnerability face significant operational risks including data breaches, unauthorized access to sensitive information, and potential system takeover. The impact extends beyond immediate security concerns to include regulatory compliance issues, financial losses, and reputational damage when such vulnerabilities are exploited. Mitigation strategies should include immediate patching of the MDBMS software to address the buffer overflow condition, implementing network segmentation to limit access to database servers, and deploying intrusion detection systems to monitor for exploitation attempts. Additionally, input validation controls should be strengthened throughout the application stack to prevent similar issues in other components, while regular security assessments should be conducted to identify and remediate other potential buffer overflow vulnerabilities in legacy systems. The vulnerability demonstrates the critical importance of proper memory management and input validation in database server implementations, serving as a reminder that even legacy systems require ongoing security maintenance and updates.