CVE-2014-8105 in 389 Directory Server
Summary
by MITRE
389 Directory Server before 1.3.2.27 and 1.3.3.x before 1.3.3.9 does not properly restrict access to the "cn=changelog" LDAP sub-tree, which allows remote attackers to obtain sensitive information from the changelog via unspecified vectors.
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Analysis
by VulDB Data Team • 05/17/2022
The CVE-2014-8105 vulnerability affects the 389 Directory Server, a comprehensive open source directory server implementation that serves as a central repository for managing user identities and access control information. This vulnerability specifically targets the server's handling of the "cn=changelog" LDAP sub-tree, which contains critical audit and change tracking information about modifications made to the directory. The issue exists in versions prior to 1.3.2.27 and 1.3.3.9, representing a significant security flaw that undermines the integrity and confidentiality of directory services. The vulnerability stems from inadequate access control mechanisms that fail to properly restrict who can access the changelog sub-tree, potentially exposing sensitive operational data to unauthorized parties.
The technical flaw in this vulnerability can be categorized under CWE-284, which addresses improper access control issues within software systems. The 389 Directory Server's implementation fails to enforce proper access controls on the changelog sub-tree, allowing remote attackers to access information that should remain restricted to authorized administrative users. This misconfiguration enables attackers to gather detailed information about directory modifications, including user account changes, permission updates, and other critical operational activities. The unspecified vectors mentioned in the description suggest that the vulnerability could be exploited through various attack methods, potentially including direct LDAP queries, network-based attacks, or through compromised legitimate user accounts that might have been granted access to the changelog data.
The operational impact of this vulnerability is substantial, as it provides attackers with valuable intelligence about directory service operations and user activities. The changelog sub-tree typically contains information about who made changes, when those changes occurred, and what specific modifications were implemented, creating a detailed audit trail that could be leveraged for further attacks. Attackers could use this information to identify active users, understand system administration patterns, discover security gaps in access control configurations, and potentially exploit this knowledge to plan more sophisticated attacks. The exposure of changelog data also violates fundamental security principles of information hiding and least privilege access, potentially enabling attackers to map out directory structures and identify potential targets for privilege escalation attacks.
Organizations utilizing affected versions of 389 Directory Server should implement immediate mitigations to address this vulnerability. The primary solution involves upgrading to versions 1.3.2.27 or 1.3.3.9, which contain the necessary access control fixes. Additionally, administrators should review and tighten access control policies for the changelog sub-tree, ensuring that only authorized administrative users can access this sensitive information. Network-level restrictions should be implemented to limit access to directory services, and monitoring should be enhanced to detect unauthorized access attempts to the changelog data. Security teams should also conduct comprehensive audits of their directory service configurations to identify any other potential access control weaknesses that could be exploited in similar manners. The vulnerability demonstrates the critical importance of maintaining up-to-date directory services and implementing proper access control mechanisms as outlined in the mitre ATT&CK framework under the privilege escalation and credential access tactics.