CVE-2024-8539 in Secure Access Client
Summary
by MITRE • 11/12/2024
Improper authorization in Ivanti Secure Access Client before version 22.7R3 allows a local authenticated attacker to modify sensitive configuration files.
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Analysis
by VulDB Data Team • 01/18/2025
The vulnerability identified as CVE-2024-8539 represents a critical authorization flaw within the Ivanti Secure Access Client software ecosystem. This issue affects versions prior to 22.7R3 and specifically targets the client-side authorization mechanisms that govern access to sensitive system configuration files. The vulnerability stems from inadequate validation of user permissions and insufficient access controls that should normally prevent unauthorized modifications to critical system components. Attackers exploiting this weakness can manipulate core configuration parameters that control network access, authentication policies, and secure communication settings.
The technical implementation of this authorization flaw manifests through improper privilege validation during file modification operations. When a local authenticated user attempts to modify system configuration files, the application fails to properly verify whether the user possesses sufficient privileges for such operations. This weakness allows attackers to bypass normal access control checks and directly manipulate sensitive configuration data that should only be accessible to system administrators or privileged processes. The vulnerability is particularly concerning because it operates at the local user level, meaning that an attacker who has already gained authentication access to the system can leverage this flaw without requiring additional escalation techniques.
From an operational impact perspective, this vulnerability creates significant security risks for organizations relying on Ivanti Secure Access Client for network security management. Successful exploitation could lead to unauthorized network access modifications, compromised authentication mechanisms, and potential lateral movement within the network infrastructure. The configuration file modifications could enable attackers to establish persistent access points, alter security policies, or redirect network traffic through maliciously configured endpoints. This vulnerability directly impacts the integrity and availability of the secure access infrastructure, potentially allowing attackers to undermine the entire security posture of systems protected by the affected client software.
The flaw aligns with CWE-284, which addresses improper access control issues in software systems, and represents a classic example of insufficient authorization checks. Security professionals should consider this vulnerability in relation to ATT&CK technique T1068, which covers 'Exploitation for Privilege Escalation', and T1566, which covers 'Phishing for Information', as attackers may use this weakness as a stepping stone for broader system compromise. Organizations should prioritize immediate remediation through the installation of Ivanti Secure Access Client version 22.7R3 or later, which includes enhanced authorization controls and proper privilege validation mechanisms. Additional mitigations may include network segmentation, monitoring for unauthorized configuration changes, and implementation of file integrity monitoring solutions to detect potential exploitation attempts.