CVE-2021-38121 in NetIQ Advance Authentication
Summary
by MITRE • 08/28/2024
Insufficient or weak TLS protocol version identified in Advance authentication client server communication when specific service is accessed between devices. This issue affects NetIQ Advance Authentication versions before 6.3.5.1
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 09/13/2024
The vulnerability identified as CVE-2021-38121 represents a critical weakness in the cryptographic security implementation of NetIQ Advance Authentication software. This issue manifests as insufficient or weak Transport Layer Security protocol versions being utilized during client-server communication when specific services are accessed between networked devices. The vulnerability specifically impacts versions of the NetIQ Advance Authentication platform prior to 6.3.5.1, indicating that organizations running older iterations of this identity and access management solution face heightened risk of cryptographic attacks. The flaw essentially allows adversaries to potentially downgrade or bypass the expected security protocols that should protect sensitive authentication communications between clients and servers.
The technical nature of this vulnerability falls under CWE-327, which addresses the use of weak cryptographic algorithms or protocols, and more specifically relates to CWE-326, which focuses on the use of weak encryption. When devices attempt to establish secure connections through the affected NetIQ Advance Authentication service, they may negotiate and utilize older TLS protocol versions that lack modern cryptographic security features. This creates opportunities for man-in-the-middle attacks where attackers can intercept and potentially modify authentication communications, particularly when accessing specific services within the platform. The weakness becomes particularly concerning given that authentication systems form the cornerstone of identity management infrastructure, making any compromise of the underlying cryptographic protection directly impactful to the entire security posture of organizations relying on the platform.
The operational impact of this vulnerability extends beyond simple cryptographic weakness to encompass broader security implications for enterprise environments. Organizations utilizing affected NetIQ Advance Authentication versions may experience compromised authentication flows that could allow unauthorized access to systems and resources protected by the platform. The vulnerability creates an attack surface that aligns with several tactics described in the MITRE ATT&CK framework, particularly those related to credential access and initial access vectors. Attackers could leverage this weakness to perform protocol downgrade attacks, potentially capturing authentication tokens or credentials transmitted between clients and servers, thereby undermining the integrity and confidentiality of the authentication process. This vulnerability is especially dangerous in environments where the authentication platform serves as a central hub for identity management across multiple systems and applications.
Mitigation strategies for CVE-2021-38121 must prioritize immediate software updates to version 6.3.5.1 or later, as provided by NetIQ. Organizations should also implement comprehensive network monitoring to detect any unusual authentication patterns that might indicate exploitation attempts. Security teams should enforce strict TLS protocol enforcement policies that mandate the use of TLS 1.2 or higher versions for all communications involving the authentication platform. Additional defensive measures include implementing network segmentation to limit access to the affected services, conducting thorough vulnerability assessments of the entire authentication infrastructure, and establishing robust incident response procedures specifically tailored to address cryptographic downgrade attacks. Organizations should also consider implementing certificate pinning mechanisms where appropriate to further strengthen the security of client-server communications and reduce the effectiveness of potential man-in-the-middle attacks that could exploit this vulnerability.