CVE-1999-1240 in cddbd
Summary
by MITRE
buffer overflow in cddbd cd database server allows remote attackers to execute arbitrary commands via a long log message.
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Analysis
by VulDB Data Team • 04/16/2026
The vulnerability identified as CVE-1999-1240 represents a critical buffer overflow flaw within the cddbd cd database server software that was prevalent during the late 1990s era of computing. This particular vulnerability resides in the server's handling of log messages, where insufficient input validation allows malicious actors to craft specially crafted log entries that exceed the allocated buffer space. The flaw operates at the core of the server's logging mechanism, which is designed to record various operational events and user activities for administrative purposes. When a remote attacker submits a log message that surpasses the predetermined buffer limits, the excess data overflows into adjacent memory locations, potentially corrupting critical program execution structures and enabling unauthorized code execution.
The technical nature of this vulnerability aligns with CWE-121, which categorizes buffer overflow conditions that occur when insufficient bounds checking allows data to overwrite adjacent memory regions. The cddbd server implementation fails to properly validate the length of incoming log messages before attempting to store them in fixed-size buffers, creating an exploitable condition that can be leveraged through network-based attacks. The attack vector specifically targets the remote execution capabilities of the vulnerable system, allowing adversaries to inject and execute arbitrary commands on the host machine with the privileges of the cddbd service account. This represents a classic stack-based buffer overflow scenario where the overflow corrupts the return address on the stack, enabling attackers to redirect program execution flow to malicious code sequences.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it fundamentally compromises the integrity and availability of the cd database server infrastructure. Remote attackers can leverage this flaw to gain unauthorized access to the system, potentially leading to complete system compromise and unauthorized data access or modification. The vulnerability affects systems running the cddbd server software, which was commonly deployed in networked environments where cd database services were utilized for media cataloging and retrieval. The consequences include potential data breaches, service disruption, and unauthorized access to sensitive media information stored within the database. Organizations relying on this legacy software faced significant exposure during the period when this vulnerability was known, as the attack could be executed without requiring local system access or authentication credentials.
Mitigation strategies for CVE-1999-1240 primarily involve implementing proper input validation and bounds checking within the cddbd server software implementation. The most effective immediate solution requires updating the server code to enforce maximum length limitations on all incoming log messages, ensuring that buffer allocation accounts for proper null termination and overflow protection mechanisms. System administrators should also consider implementing network-based restrictions such as firewall rules that limit access to the cddbd service ports and monitor for suspicious log message patterns. Additionally, organizations should deploy intrusion detection systems capable of identifying malformed log messages that attempt to exploit this buffer overflow condition. The remediation process should also include regular security audits of legacy systems and comprehensive patch management procedures to address similar vulnerabilities in other network services. This vulnerability highlights the critical importance of input validation and memory safety practices in networked server applications, aligning with ATT&CK technique T1059 for command and script execution through buffer overflow exploitation. The broader implications emphasize the need for secure coding practices and regular vulnerability assessments to prevent similar issues in modern software implementations, particularly as organizations continue to maintain legacy systems that may contain unpatched security flaws.