CVE-2018-6023 in FASTgate
Summary
by MITRE
Fastweb FASTgate 0.00.47 devices are vulnerable to CSRF, with impacts including Wi-Fi password changing, Guest Wi-Fi activating, etc.
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Analysis
by VulDB Data Team • 08/30/2024
The CVE-2018-6023 vulnerability affects Fastweb FASTgate 0.00.47 devices, representing a critical cross-site request forgery flaw that undermines the security posture of these network access points. This vulnerability resides within the web-based management interface of the devices, where proper authentication and authorization mechanisms fail to validate the origin of requests, creating a significant attack surface for malicious actors. The flaw allows unauthorized users to manipulate device configuration settings through crafted web requests without requiring valid credentials, effectively bypassing the intended security controls that should protect sensitive network parameters.
The technical implementation of this CSRF vulnerability stems from the absence of anti-forgery tokens or proper request origin validation within the device's web interface. When legitimate users interact with the management portal, the device fails to verify that requests originate from the authenticated session, enabling attackers to craft malicious web pages or exploit existing user sessions to execute unauthorized operations. The specific impact includes the ability to modify Wi-Fi passwords, activate or deactivate guest network access, and potentially alter other network configuration parameters that control device behavior and network access permissions. This vulnerability directly violates the principle of least privilege and demonstrates a failure in implementing proper session management controls.
The operational impact of this vulnerability extends beyond simple configuration changes, as it enables attackers to compromise network security and potentially gain unauthorized access to connected devices. An attacker could exploit this flaw to change Wi-Fi passwords, effectively locking out legitimate users while maintaining access to the network, or activate guest networks to create unauthorized access points. The vulnerability also poses risks to network availability and integrity, as unauthorized modifications could disrupt network services or create backdoor access points for further exploitation. Organizations relying on these devices for network access control face significant risks including unauthorized network penetration, data interception, and potential lateral movement within their network infrastructure.
Mitigation strategies for CVE-2018-6023 should focus on implementing proper anti-forgery token mechanisms within the web interface, enforcing strict request origin validation, and ensuring that all administrative operations require explicit authentication and authorization checks. Network administrators should immediately update affected devices to the latest firmware versions provided by Fastweb, as this vulnerability affects specific device versions and is likely addressed through firmware updates. The implementation of network segmentation, additional authentication controls, and monitoring of administrative activities can help detect and prevent exploitation attempts. This vulnerability aligns with CWE-352, which specifically addresses Cross-Site Request Forgery issues, and represents a significant concern for organizations implementing the ATT&CK framework's privilege escalation and persistence tactics. Regular security assessments and network monitoring should be implemented to identify similar vulnerabilities in other network infrastructure components, as this type of flaw commonly affects web-based management interfaces in network equipment.