CVE-2021-44525 in ManageEngine PAM360
Summary
by MITRE • 12/20/2021
Zoho ManageEngine PAM360 before build 5303 allows attackers to modify a few aspects of application state because of a filter bypass in which authentication is not required.
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Analysis
by VulDB Data Team • 12/25/2021
The vulnerability identified as CVE-2021-44525 affects Zoho ManageEngine PAM360 versions prior to build 5303, representing a critical authentication bypass flaw that undermines the security posture of privileged access management systems. This issue stems from a filter bypass mechanism that permits unauthorized modification of application state without proper authentication, creating a significant vector for malicious actors to exploit. The vulnerability specifically targets the application's access control mechanisms, allowing attackers to manipulate sensitive configuration parameters and system settings through crafted requests that circumvent the normal authentication flow.
The technical implementation of this flaw involves a failure in input validation and access control enforcement within the PAM360 application framework. Attackers can leverage this bypass to modify critical aspects of the application state, including but not limited to user permissions, access policies, and system configuration settings. The vulnerability operates at the application layer where proper authorization checks are not consistently enforced, enabling unauthenticated modifications to privileged resources. This represents a direct violation of the principle of least privilege and demonstrates a fundamental weakness in the application's security architecture that allows arbitrary state changes without proper authentication mechanisms.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it provides attackers with the capability to fundamentally alter the security configuration of the privileged access management system. This could enable attackers to escalate their privileges, modify access controls, and potentially gain access to sensitive systems and data that the PAM360 platform is designed to protect. The implications are particularly severe given that PAM360 systems typically manage critical privileged accounts and access credentials, making this vulnerability a prime target for attackers seeking to establish persistent access within enterprise environments. The lack of authentication requirements for state modification operations creates a persistent risk that can be exploited by both internal and external threat actors.
Mitigation strategies for CVE-2021-44525 should prioritize immediate patching of affected systems to build 5303 or later versions where the authentication bypass has been addressed. Organizations should implement network segmentation and access controls to limit exposure of PAM360 systems to untrusted networks, while also monitoring for suspicious modifications to application state. Security teams should conduct comprehensive audits of PAM360 configurations and access controls to identify any unauthorized changes that may have occurred during the vulnerability window. The vulnerability aligns with CWE-285, which addresses insufficient authorization issues in software systems, and maps to ATT&CK technique T1078 for valid accounts and T1566 for credential access, highlighting the multi-faceted nature of the threat landscape this vulnerability creates. Organizations should also consider implementing additional monitoring and logging controls to detect unauthorized modifications to privileged access management systems and establish incident response procedures specifically tailored to address authentication bypass vulnerabilities in critical security infrastructure.