CVE-2024-4063 in CS-C6-21WFR-8
Summary
by MITRE • 04/23/2024
A vulnerability was found in EZVIZ CS-C6-21WFR-8 5.2.7 Build 170628. It has been classified as problematic. This affects an unknown part of the component Davinci Application. The manipulation leads to improper certificate validation. It is possible to initiate the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The identifier VDB-261789 was assigned to this vulnerability. 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 • 05/28/2024
The vulnerability identified as CVE-2024-4063 resides within the EZVIZ CS-C6-21WFR-8 security camera system running firmware version 5.2.7 Build 170628 and specifically affects the Davinci Application component. This represents a critical security flaw that compromises the system's ability to properly validate digital certificates used for secure communications. The vulnerability's classification as problematic indicates significant risk to system integrity and data security, particularly given that it affects a core application component responsible for device authentication and secure data transmission. The lack of vendor response despite early disclosure attempts suggests potential concerns about the severity of the issue or the vendor's commitment to addressing the vulnerability.
The technical flaw manifests through improper certificate validation mechanisms within the Davinci Application, which allows attackers to bypass standard security protocols that should verify the authenticity of certificates used during device communication and authentication processes. This weakness creates a pathway for malicious actors to perform man-in-the-middle attacks or impersonate legitimate devices within the network. The vulnerability's remote exploitability means that attackers do not require physical access to the device or network proximity to execute the attack, significantly expanding the potential attack surface. The high attack complexity and difficult exploitability characteristics suggest that while the vulnerability is remotely accessible, successful exploitation requires specialized knowledge and tools, likely involving advanced cryptographic techniques or specific network conditions.
The operational impact of this vulnerability extends beyond simple unauthorized access to encompass potential full system compromise and data exfiltration capabilities. Security cameras represent critical infrastructure components that often house sensitive surveillance data, and the compromise of such devices can lead to privacy violations, unauthorized monitoring, and potential use as entry points for broader network attacks. The improper certificate validation could enable attackers to establish persistent backdoors or redirect communications to malicious servers, undermining the fundamental security assumptions of the device's network communications. Organizations relying on this security camera system face potential exposure to sophisticated attacks that could compromise their entire surveillance infrastructure and associated network security posture.
Mitigation strategies should prioritize immediate firmware updates from the vendor once available, though the lack of vendor response suggests this may not occur promptly. Network segmentation and monitoring of traffic between the affected devices and other systems can help detect anomalous certificate validation behaviors or unauthorized communications. Implementing additional authentication layers and regular security audits of networked devices can provide defense-in-depth measures. The vulnerability aligns with CWE-295, which addresses improper certificate validation, and potentially maps to ATT&CK techniques involving credential access and defense evasion. Organizations should also consider deploying network intrusion detection systems that can identify unusual certificate validation patterns or communications that might indicate exploitation attempts, as the vulnerability's characteristics make it particularly suited for stealthy, long-term attacks that could go undetected without proper monitoring controls.