CVE-2002-1225 in Heimdal
Summary
by MITRE
Multiple buffer overflows in Heimdal before 0.5, possibly in both the (1) kadmind and (2) kdc servers, may allow remote attackers to gain root access.
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Analysis
by VulDB Data Team • 10/27/2024
The vulnerability identified as CVE-2002-1225 represents a critical security flaw affecting the Heimdal implementation of the Kerberos authentication system prior to version 0.5. This vulnerability manifests as multiple buffer overflows that exist within the kadmind and kdc server components of the software, creating a significant attack surface for malicious actors seeking to compromise systems utilizing this authentication framework. The Heimdal project serves as a widely adopted open-source implementation of the Kerberos protocol, making this vulnerability particularly dangerous as it could potentially affect numerous networked systems relying on Kerberos for authentication services.
The technical nature of this vulnerability stems from improper input validation and memory handling within the kadmind and kdc server processes. Buffer overflow conditions occur when more data is written to a fixed-length buffer than it can accommodate, causing adjacent memory locations to be overwritten. In the context of authentication servers, these overflows can be exploited by remote attackers to inject malicious code into the memory space of the running processes. The vulnerability affects both the key distribution center and the administration server components, which are fundamental to Kerberos operations and typically run with elevated privileges. When exploited successfully, these buffer overflows can lead to arbitrary code execution, allowing attackers to gain root access to the compromised systems.
The operational impact of CVE-2002-1225 extends beyond simple privilege escalation, as it fundamentally undermines the security foundation of Kerberos-based authentication systems. Systems utilizing affected Heimdal versions become vulnerable to remote code execution attacks that can result in complete system compromise, data exfiltration, and persistent access to network resources. The attack vector is particularly concerning because it requires no local access or authentication credentials, making it a true remote exploit that can be launched from anywhere on the network. This vulnerability directly relates to CWE-121, which describes stack-based buffer overflow conditions, and aligns with ATT&CK technique T1059 for command and scripting interpreter usage, as successful exploitation would likely involve executing malicious commands through the compromised authentication servers.
Mitigation strategies for CVE-2002-1225 primarily focus on immediate software updates and system hardening measures. Organizations should prioritize upgrading to Heimdal version 0.5 or later, which contains the necessary patches to address the buffer overflow conditions. Additionally, implementing network segmentation and access controls can limit the potential impact of successful exploitation attempts. System administrators should also consider implementing intrusion detection systems to monitor for suspicious network activity originating from the affected servers. The vulnerability demonstrates the importance of proper input validation and memory management practices in security-critical applications, aligning with security best practices outlined in the OWASP Top Ten and other industry standards for secure coding practices. Regular security assessments and vulnerability scanning should be conducted to identify and remediate similar issues in other authentication and network services within the organization's infrastructure.