CVE-2001-0818 in MDBMS
Summary
by MITRE
A buffer overflow the \s console command in MDBMS 0.99b9 and earlier allows remote attackers to execute arbitrary commands by sending the command a large amount of data.
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Analysis
by VulDB Data Team • 11/26/2024
The vulnerability identified as CVE-2001-0818 represents a critical buffer overflow flaw within the MDBMS database management system version 0.99b9 and earlier releases. This vulnerability specifically affects the \s console command implementation, which serves as a command-line interface for database operations. The flaw stems from inadequate input validation and bounds checking within the command processing logic, creating an exploitable condition where maliciously crafted input can overwrite adjacent memory regions. The vulnerability classifies under CWE-121, which encompasses buffer overflow conditions where insufficient space is allocated for data storage, leading to memory corruption. This type of vulnerability falls squarely within the ATT&CK framework's T1059.007 technique for Command and Scripting Interpreter, as it enables arbitrary code execution through command-line interfaces.
The technical implementation of this vulnerability exploits the fundamental weakness in how the \s console command handles input data. When an attacker sends a large amount of data to this command, the system fails to properly validate the input length against the allocated buffer size. This results in a classic stack-based buffer overflow where the excess data overflows into adjacent memory locations, potentially overwriting return addresses, function pointers, or other critical control data. The overflow occurs during the processing of user input, making it accessible to remote attackers who can leverage this condition to inject and execute malicious code within the context of the database service. The vulnerability demonstrates a clear lack of proper input sanitization and memory management practices that are fundamental to secure software development.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with complete control over the affected system. Successful exploitation allows remote attackers to execute arbitrary commands with the privileges of the database service account, which could range from user-level access to system-level privileges depending on the deployment configuration. This capability enables attackers to perform data exfiltration, modify database content, establish persistent backdoors, or use the compromised system as a launch point for further attacks within the network infrastructure. The vulnerability affects database servers that rely on MDBMS for their operations, potentially compromising sensitive data stored in these systems and undermining the integrity and confidentiality of database operations. The remote nature of the attack means that exploitation can occur without physical access to the system, making it particularly dangerous for network-accessible database services.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term architectural improvements to prevent similar issues. The primary recommendation involves upgrading to a patched version of MDBMS that addresses the buffer overflow condition through proper input validation and memory management. Organizations should implement input length restrictions and boundary checking mechanisms to prevent oversized data from corrupting memory structures. Network segmentation and access controls should be enforced to limit exposure of database services to untrusted networks, while regular security assessments should be conducted to identify similar vulnerabilities in other database components. Additionally, implementing intrusion detection systems that monitor for unusual command patterns and input sequences can help detect exploitation attempts. The vulnerability highlights the critical importance of following secure coding practices and adhering to industry standards such as the OWASP Secure Coding Practices and CERT/CC guidelines for preventing buffer overflow conditions in software development lifecycle processes.