CVE-2020-28137 in Platinum 4410
Summary
by MITRE • 11/10/2021
Cross site request forgery (CSRF) in Genexis Platinum 4410 V2-1.28, allows attackers to cause a denial of service by continuously restarting the router.
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Analysis
by VulDB Data Team • 11/12/2021
The vulnerability identified as CVE-2020-28137 represents a critical cross site request forgery flaw within the Genexis Platinum 4410 V2-1.28 router firmware, classified under CWE-352 according to the Common Weakness Enumeration framework. This CSRF vulnerability specifically affects the administrative interface of the device, allowing unauthenticated attackers to manipulate the router's operational state through maliciously crafted web requests. The flaw exists in the authentication and authorization mechanisms that fail to properly validate the origin of requests submitted to the router's management interface, creating an exploitable condition where attackers can execute unauthorized actions with the privileges of legitimate users.
The technical implementation of this vulnerability stems from the absence of proper anti-CSRF tokens or validation mechanisms within the router's web-based management portal. When administrators or authorized users access the router's administrative interface, the system should verify that requests originate from legitimate sources and contain appropriate validation tokens. However, in the affected Genexis Platinum 4410 V2-1.28 firmware version, these protective measures are either missing or insufficient, enabling attackers to craft malicious web pages or exploit payloads that, when visited by an authenticated user, automatically submit requests to the router's administrative endpoints. The specific attack vector targets the router's restart functionality, which when repeatedly invoked through CSRF attacks, results in continuous system reboots and ultimately leads to denial of service conditions.
The operational impact of this vulnerability extends beyond simple service disruption, as it represents a significant security risk for network infrastructure devices. The continuous restart capability provides attackers with a persistent method of maintaining denial of service conditions without requiring sustained access to the network or physical presence at the device location. From an ATT&CK framework perspective, this vulnerability maps to the T1499.004 technique related to network disruption and the T1566.001 technique for credential harvesting through social engineering, as attackers may use CSRF attacks to force administrators into repeatedly logging into compromised sessions. The vulnerability affects organizations relying on this specific router model for critical network infrastructure, potentially impacting business continuity and network availability.
Organizations affected by this vulnerability should immediately implement mitigation strategies focusing on network segmentation and access controls to limit exposure to potentially compromised devices. The most effective immediate remediation involves updating the router firmware to the latest version provided by Genexis, which should include proper CSRF token validation and authentication mechanisms. Network administrators should also consider implementing web application firewalls or intrusion prevention systems that can detect and block suspicious CSRF attack patterns targeting administrative interfaces. Additionally, organizations should conduct comprehensive vulnerability assessments to identify other potentially affected devices within their network infrastructure, as similar CSRF vulnerabilities may exist in other network equipment. The implementation of multi-factor authentication for administrative access and regular security audits of network devices represents a comprehensive approach to addressing the underlying security weaknesses that enable this type of attack.