CVE-2022-30236 in Wiser Smart
Summary
by MITRE • 06/03/2022
A CWE-669: Incorrect Resource Transfer Between Spheres vulnerability exists that could allow unauthorized access when an attacker uses cross-domain attacks. Affected Products: Wiser Smart, EER21000 & EER21001 (V4.5 and prior)
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Analysis
by VulDB Data Team • 06/06/2022
The vulnerability identified as CVE-2022-30236 represents a critical security flaw classified under CWE-669, which specifically addresses incorrect resource transfer between spheres. This designation indicates a fundamental breakdown in security boundaries where resources intended for one security domain are improperly accessible from another domain, creating a pathway for unauthorized access. The affected products include Wiser Smart systems along with EER21000 and EER21001 models running firmware version 4.5 or earlier, highlighting a widespread issue within these smart home and IoT device ecosystems. The vulnerability manifests through cross-domain attack vectors, where malicious actors can exploit the improper resource handling to bypass security controls that should normally separate different security zones.
The technical implementation of this vulnerability stems from inadequate boundary checking mechanisms within the affected smart home devices. When these systems process requests or handle data transfers across domain boundaries, they fail to properly validate or enforce security restrictions that should prevent unauthorized access to resources. This misconfiguration allows attackers to leverage cross-domain techniques to access resources that should be restricted to specific security contexts, potentially enabling them to manipulate device functionality, access sensitive data, or gain unauthorized control over connected systems. The flaw particularly affects the communication protocols and resource management mechanisms that govern how these devices handle requests from different network domains or user contexts.
The operational impact of this vulnerability extends beyond simple unauthorized access, creating significant risks for smart home environments and IoT ecosystems. Attackers could potentially exploit this weakness to compromise the entire smart home infrastructure, gaining access to connected devices, personal data, and control over automated systems. The implications are particularly concerning given that these devices typically operate in private residential environments where they handle sensitive personal information and may control critical systems such as lighting, security, and environmental controls. The vulnerability's presence in firmware versions 4.5 and earlier means that a substantial number of deployed devices remain at risk, creating a widespread exposure across affected installations.
Security mitigations for CVE-2022-30236 should focus on immediate firmware updates that address the resource transfer boundary violations and implement proper access controls for cross-domain operations. Organizations and users must prioritize updating affected devices to versions that correct the CWE-669 implementation flaws, ensuring that proper security boundaries are enforced between different resource spheres. Network segmentation and additional firewall rules can provide temporary protection while updates are deployed, though these measures are not permanent solutions. The remediation process should also include comprehensive security assessments of the affected systems to identify any potential exploitation that may have already occurred, as well as monitoring for suspicious network activity that could indicate successful exploitation attempts. This vulnerability aligns with ATT&CK technique T1190, which covers exploitation of remote services, and represents a clear violation of security boundary principles that should be enforced at all levels of system design and implementation.