CVE-2023-45581 in FortiClientEMS
Summary
by MITRE • 02/15/2024
An improper privilege management vulnerability [CWE-269] in Fortinet FortiClientEMS version 7.2.0 through 7.2.2 and before 7.0.10 allows an Site administrator with Super Admin privileges to perform global administrative operations affecting other sites via crafted HTTP or HTTPS requests.
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Analysis
by VulDB Data Team • 03/08/2024
The vulnerability identified as CVE-2023-45581 represents a critical privilege management flaw within Fortinet FortiClientEMS software that directly violates fundamental security principles of access control and least privilege enforcement. This weakness exists in versions 7.2.0 through 7.2.2 and affects systems prior to the 7.0.10 release, creating a persistent risk for organizations relying on this endpoint management solution. The vulnerability specifically targets the privilege escalation mechanism that should normally prevent site administrators from accessing or modifying resources outside their designated administrative boundaries. The flaw manifests when a site administrator possessing Super Admin privileges crafts malicious HTTP or HTTPS requests that bypass normal access controls, enabling unauthorized global administrative operations across multiple sites within the same management system.
From a technical perspective, this vulnerability stems from inadequate input validation and privilege boundary enforcement mechanisms within the FortiClientEMS application layer. The system fails to properly verify the scope of administrative privileges associated with each request, allowing authenticated site administrators to escalate their privileges beyond their intended site boundaries. This improper privilege management directly maps to CWE-269 which specifically addresses issues related to inadequate privileges for system resources, where the system fails to properly enforce access control policies for administrative functions. The vulnerability exploits the trust relationship between different administrative roles, where the Super Admin role should be restricted to site-specific operations but can be leveraged to perform global administrative tasks through crafted API calls or web requests that manipulate the underlying privilege verification logic.
The operational impact of this vulnerability extends far beyond a simple privilege escalation scenario, creating significant risks for enterprise security posture and compliance requirements. An attacker exploiting this vulnerability could potentially compromise multiple sites within a single FortiClientEMS deployment, affecting endpoint security policies, device configurations, and administrative controls across organizations. The global administrative operations that can be performed include but are not limited to modifying security policies, managing user accounts, accessing sensitive endpoint data, and altering system configurations that affect multiple sites simultaneously. This capability undermines the fundamental security model of site isolation that organizations rely upon to contain security incidents and maintain separation between different business units or geographic locations. The vulnerability also creates opportunities for persistent access and lateral movement within the network, as successful exploitation could enable attackers to maintain control over multiple administrative domains.
Organizations affected by this vulnerability should implement immediate mitigations including applying the latest available patches from Fortinet, which address the privilege management flaw through enhanced access control verification mechanisms. Network segmentation and monitoring should be strengthened to detect anomalous administrative requests that might indicate exploitation attempts, particularly those involving cross-site privilege escalation activities. The implementation of additional administrative controls such as role-based access control restrictions, enhanced audit logging, and regular privilege reviews becomes critical in mitigating the risk. Security teams should also consider implementing network-based intrusion detection systems that can identify and block suspicious HTTP/HTTPS requests attempting to exploit this vulnerability. From an ATT&CK framework perspective, this vulnerability aligns with techniques such as privilege escalation and defense evasion, where attackers can leverage the weakness to maintain persistent access and avoid detection by operating within legitimate administrative boundaries. Organizations should also conduct comprehensive security assessments to identify any potential exploitation attempts that may have occurred prior to patching, as the vulnerability could have enabled unauthorized global administrative access across multiple sites within the affected deployment.