CVE-2024-7154 in A3700R
Summary
by MITRE • 07/28/2024
A vulnerability, which was classified as problematic, was found in TOTOLINK A3700R 9.1.2u.5822_B20200513. Affected is an unknown function of the file /wizard.html of the component Password Reset Handler. The manipulation leads to improper access controls. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-272568. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 08/09/2024
The vulnerability identified as CVE-2024-7154 represents a critical access control flaw within the TOTOLINK A3700R router firmware version 9.1.2u.5822_B20200513. This issue resides in the password reset handler component, specifically within the /wizard.html file, where an improper access control mechanism allows unauthorized users to bypass legitimate authentication processes. The vulnerability's classification as problematic indicates significant security implications that could compromise the device's administrative functions and overall network security posture.
The technical exploitation of this vulnerability occurs through remote access, eliminating the need for physical proximity or local network access. Attackers can manipulate the password reset handler functionality to gain unauthorized administrative privileges, potentially enabling them to modify router configurations, access sensitive network data, or establish persistent backdoors. This remote exploit capability aligns with attack patterns documented in the MITRE ATT&CK framework under the privilege escalation and credential access domains. The flaw essentially creates a backdoor mechanism that bypasses normal authentication procedures, allowing attackers to reset passwords without proper authorization.
The operational impact of CVE-2024-7154 extends beyond individual device compromise to potentially affect entire network infrastructures. When exploited, this vulnerability could enable attackers to gain full administrative control over the affected routers, providing them with unrestricted access to the connected network. This level of access could facilitate advanced persistent threats, data exfiltration, or the deployment of additional malicious tools within the network environment. The vulnerability's disclosure to the public means that threat actors can readily develop and deploy exploits, increasing the risk to organizations and individuals using affected TOTOLINK A3700R devices.
Security professionals should consider implementing immediate network segmentation measures to limit the potential impact of this vulnerability, particularly in environments where these routers are deployed. The lack of vendor response to early disclosure attempts creates additional risk as no official patches or mitigations are currently available. Organizations should also monitor for exploitation attempts and consider deploying network intrusion detection systems to identify potential attack signatures. According to CWE standards, this vulnerability maps to CWE-285, which addresses improper authorization in access control mechanisms, highlighting the fundamental flaw in the authentication process that allows unauthorized access to administrative functions. The attack surface remains particularly concerning due to the widespread deployment of TOTOLINK A3700R devices in both enterprise and residential networks, potentially exposing thousands of systems to this remote exploitation vector.