CVE-2016-9166 in NetIQ eDirectory
Summary
by MITRE
NetIQ eDirectory versions prior to 9.0.2, under some circumstances, could be susceptible to downgrade of communication security.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 05/17/2020
The vulnerability identified as CVE-2016-9166 affects NetIQ eDirectory software versions before 9.0.2, presenting a significant security risk related to communication protocol handling. This issue manifests when the system fails to properly enforce secure communication channels, potentially allowing attackers to exploit weaknesses in the authentication and encryption mechanisms. The vulnerability stems from the software's inability to adequately prevent downgrade attacks during network communication establishment, creating opportunities for man-in-the-middle interference and credential interception.
The technical flaw resides in the protocol negotiation process within NetIQ eDirectory, where the system does not sufficiently validate or enforce the use of secure communication channels. This weakness allows malicious actors to potentially force connections to use less secure protocols or cryptographic methods, effectively downgrading the security posture of the communication channel. The vulnerability specifically impacts scenarios where the software handles authentication requests or directory service communications, making it particularly dangerous in enterprise environments where directory services are critical infrastructure components.
Operational impact of this vulnerability extends beyond simple credential theft to encompass potential complete system compromise and unauthorized access to sensitive directory information. Attackers exploiting this weakness could gain access to user credentials, directory service accounts, and potentially escalate privileges within the network infrastructure. The vulnerability affects organizations relying on NetIQ eDirectory for identity management and authentication services, potentially exposing critical enterprise resources to unauthorized access. Security teams face the challenge of identifying vulnerable systems and implementing immediate remediation measures to prevent exploitation.
Mitigation strategies should focus on immediate patch deployment to update NetIQ eDirectory to version 9.0.2 or later, which contains the necessary fixes for secure protocol negotiation. Organizations should also implement network monitoring to detect anomalous communication patterns that might indicate attempted exploitation. Additional protective measures include enforcing secure communication protocols, implementing network segmentation, and conducting regular vulnerability assessments of directory services. From a compliance perspective, this vulnerability aligns with CWE-310 and CWE-327, which address cryptographic weakness and improper encryption implementation respectively, and maps to ATT&CK techniques involving credential access and network protocol manipulation. The vulnerability demonstrates the critical importance of maintaining up-to-date security software and proper protocol enforcement in enterprise directory services.