CVE-2008-6125 in Moodle
Summary
by MITRE
Unspecified vulnerability in the user editing interface in Moodle 1.5.x, 1.6 before 1.6.6, and 1.7 before 1.7.3 allows remote authenticated users to gain privileges via unknown vectors.
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Analysis
by VulDB Data Team • 08/04/2021
The vulnerability identified as CVE-2008-6125 represents a critical privilege escalation issue within the Moodle learning management system's user editing interface. This weakness affects multiple versions including Moodle 1.5.x series, Moodle 1.6 prior to 1.6.6, and Moodle 1.7 prior to 1.7.3, indicating a prolonged period of exposure that allowed attackers to exploit the system's authentication and authorization mechanisms. The unspecified nature of the vulnerability vectors suggests that the flaw could manifest through various attack paths, making it particularly dangerous as defenders struggle to identify all potential exploitation methods. The vulnerability specifically targets the user editing interface, which serves as a critical administrative function where users can modify account details, permissions, and access levels within the learning platform.
The technical flaw underlying CVE-2008-6125 stems from inadequate input validation and authorization checks within the user editing functionality. When authenticated users interact with the interface to modify user accounts, the system fails to properly verify the privileges of the requesting user or validate the scope of changes being attempted. This weakness creates a pathway for malicious actors who have gained legitimate login credentials to escalate their privileges beyond what their original account permissions should allow. The vulnerability operates at the application level, specifically within the web interface components that handle user account modifications, and represents a failure in the principle of least privilege enforcement. According to CWE classification, this vulnerability aligns with CWE-264, which covers permissions, privileges, and access control issues, and more specifically with CWE-284, which addresses improper access control mechanisms.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it fundamentally compromises the security model of Moodle installations. Remote authenticated users can potentially modify other users' accounts, elevate their own permissions to administrative levels, or manipulate user access controls within the learning management system. This capability enables attackers to gain unauthorized access to sensitive educational data, modify course content, impersonate other users, or even take complete control of the learning platform. The remote nature of the attack means that exploitation can occur from any location with network access to the Moodle server, eliminating the need for physical presence or local network access. Organizations using affected Moodle versions face significant risks including data breaches, unauthorized course modifications, and potential compromise of student and faculty information, particularly in environments where Moodle serves as the primary educational platform.
The mitigation strategy for CVE-2008-6125 requires immediate implementation of version upgrades to patched releases of Moodle, specifically upgrading to Moodle 1.6.6 or 1.7.3 and later versions where the vulnerability has been addressed. System administrators should also implement additional security controls including regular monitoring of user account modifications, implementing role-based access controls with strict permission assignments, and conducting periodic security audits of user editing activities. The ATT&CK framework categorizes this vulnerability under privilege escalation techniques, specifically targeting the T1078 credential access sub-technique, where adversaries leverage legitimate credentials to gain elevated access. Organizations should consider implementing network segmentation to limit access to administrative interfaces, enforcing multi-factor authentication for privileged accounts, and establishing automated alerting for suspicious user account modifications. The vulnerability also highlights the importance of keeping educational platforms updated, as the prolonged exposure period indicates that many organizations may have been running vulnerable versions for extended periods without proper patch management procedures.