CVE-2024-7205 in eWeLink Cloud Service
Summary
by MITRE • 07/31/2024
When the device is shared, the homepage module are before 2.19.0 in eWeLink Cloud Service allows Secondary user to take over devices as primary user via sharing unnecessary device-sensitive information.
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Analysis
by VulDB Data Team • 08/01/2024
The vulnerability identified as CVE-2024-7205 affects the eWeLink Cloud Service platform and specifically impacts devices running versions prior to 2.19.0. This security flaw resides within the homepage module and represents a critical access control weakness that enables unauthorized privilege escalation. The vulnerability manifests when devices are shared between users, creating a scenario where secondary users can potentially assume primary user roles through the exploitation of improperly handled device-sensitive information during the sharing process.
The technical implementation of this vulnerability stems from inadequate validation and authorization checks within the device sharing mechanism. When a device is shared from a primary user account to a secondary user account, the system fails to properly sanitize or restrict the transmission of sensitive device information. This oversight allows the secondary user to access and manipulate device configurations that should remain restricted to the primary user. The flaw operates at the application layer and specifically targets the cloud service infrastructure that manages device sharing operations, creating a pathway for unauthorized access to device control functions and configuration data.
The operational impact of this vulnerability extends beyond simple privilege escalation to encompass potential device compromise and unauthorized control. Secondary users who exploit this vulnerability can gain full administrative control over devices they were not originally authorized to manage, potentially leading to unauthorized device modifications, data exfiltration, or even device disruption. The risk is particularly concerning in environments where multiple users share devices or where users have varying levels of access rights, as it creates an avenue for privilege abuse that could affect device security and user privacy. This vulnerability directly impacts the integrity and confidentiality of device management operations within the eWeLink ecosystem.
Organizations and users affected by this vulnerability should immediately implement mitigations including upgrading to version 2.19.0 or later of the eWeLink Cloud Service, which contains the necessary patches to address the improper device-sensitive information handling. Additional protective measures include implementing stricter access controls, monitoring device sharing activities, and ensuring that users understand the security implications of sharing devices. From a security framework perspective, this vulnerability aligns with CWE-284 (Improper Access Control) and represents a failure in the principle of least privilege. The attack pattern follows elements of ATT&CK technique T1078 (Valid Accounts) and T1484 (Domain Policy Modification) as attackers can leverage legitimate sharing mechanisms to escalate privileges. Organizations should also consider implementing network monitoring to detect anomalous device sharing patterns and unauthorized access attempts that could indicate exploitation of this vulnerability.