CVE-2002-1226 in Heimdal
Summary
by MITRE
Unknown vulnerabilities in Heimdal before 0.5 with unknown impact, possibly in the (1) kadmind and (2) kdc servers, may allow remote or local attackers to gain root or other access, but not via buffer overflows (CVE-2002-1225).
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Analysis
by VulDB Data Team • 06/28/2021
The vulnerability identified as CVE-2002-1226 represents a significant security flaw within the Heimdal Kerberos implementation prior to version 0.5. This issue affects critical components of the Kerberos authentication system including both the kadmind and kdc servers, which are fundamental to secure network authentication processes. The vulnerability is classified as an unknown type of weakness that does not involve traditional buffer overflow mechanisms, distinguishing it from the more commonly understood CVE-2002-1225. The absence of specific details regarding the exact nature of the vulnerability makes this issue particularly concerning for security professionals who must assess risk without complete technical information. These servers form the backbone of authentication infrastructure in many enterprise environments, making their compromise potentially devastating to overall security posture.
The technical implications of this vulnerability extend beyond simple access control breaches, as it potentially allows both remote and local attackers to escalate privileges to root or other high-privilege levels. This dual attack surface capability means that adversaries could exploit the weakness from external network positions or leverage local system access to achieve elevated privileges. The vulnerability's classification as non-buffer overflow related suggests it may involve memory corruption through other mechanisms such as integer overflows, format string vulnerabilities, or improper input validation within the Kerberos server components. Such weaknesses in authentication infrastructure can lead to complete system compromise and unauthorized access to protected resources across networked environments.
The operational impact of CVE-2002-1226 is substantial given that Kerberos servers are critical infrastructure components in many enterprise and institutional environments. Organizations relying on Heimdal Kerberos implementations before version 0.5 face potential unauthorized access to sensitive systems, data, and network resources. The vulnerability's potential for privilege escalation means that successful exploitation could result in complete control over affected systems, allowing attackers to establish persistent access, exfiltrate data, or disrupt services. This risk is particularly acute in environments where Kerberos serves as the primary authentication mechanism for securing critical infrastructure components, databases, and network services.
Security mitigations for this vulnerability primarily involve upgrading to Heimdal version 0.5 or later, which would contain the necessary patches to address the underlying flaw. Organizations should also implement network segmentation and access controls to limit exposure of vulnerable Kerberos servers, particularly when immediate upgrades are not feasible. Regular security assessments of authentication infrastructure and monitoring for anomalous access patterns can help detect potential exploitation attempts. The vulnerability aligns with CWE categories related to authentication and privilege escalation weaknesses, and may map to ATT&CK techniques involving privilege escalation and credential access. System administrators should also consider implementing additional security controls such as intrusion detection systems and network monitoring to detect potential exploitation attempts targeting these critical authentication components.