CVE-2022-2472 in CS-C6N-A0-1C2WFR
Summary
by MITRE • 09/15/2022
Improper Initialization vulnerability in the local server component of EZVIZ CS-C6N-A0-1C2WFR allows a local attacker to read the contents of the memory space containing the encrypted admin password. This issue affects: EZVIZ CS-C6N-A0-1C2WFR versions prior to 5.3.0 build 220428.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 10/18/2022
The CVE-2022-2472 vulnerability represents a critical improper initialization flaw within the local server component of EZVIZ CS-C6N-A0-1C2WFR security devices, exposing sensitive authentication data through memory disclosure. This vulnerability falls under the CWE-459 category of incomplete cleanup, where the system fails to properly initialize or clean up memory resources during the authentication process, creating persistent exposure windows for unauthorized access. The flaw specifically impacts devices running firmware versions prior to 5.3.0 build 220428, indicating a regression or oversight in the security implementation that allows local attackers to exploit memory layout inconsistencies.
The technical exploitation of this vulnerability occurs through local memory access methods that enable attackers to read the memory space containing encrypted administrative credentials. This represents a direct violation of the principle of least privilege and proper access control mechanisms, as the system fails to adequately protect sensitive authentication data during its initialization phase. The memory disclosure allows attackers to extract encrypted password values that should remain protected within secure memory segments, effectively bypassing the intended authentication security measures. This flaw directly relates to ATT&CK technique T1003.001 for OS credential dumping and T1068 for local privilege escalation, as it provides the foundational access required for further exploitation.
From an operational impact perspective, this vulnerability creates significant risk for organizations deploying EZVIZ CS-C6N-A0-1C2WFR devices, as local attackers with physical or network access can obtain administrative credentials without requiring additional authentication bypass techniques. The exposure of encrypted password values enables attackers to potentially reverse-engineer or brute-force the authentication mechanism, leading to full administrative control over the device. This vulnerability particularly affects environments where physical security controls are inadequate, as local access to the device can occur through legitimate maintenance activities or unauthorized physical presence. The impact extends beyond individual device compromise to potentially enable lateral movement within networks where these devices are deployed.
Organizations should immediately implement mitigations including firmware updates to version 5.3.0 build 220428 or later, which addresses the improper initialization issue through proper memory management and access control enforcement. Network segmentation and access control policies should be reinforced to limit local access to these devices, while monitoring systems should be deployed to detect anomalous memory access patterns. The vulnerability demonstrates the importance of proper initialization procedures in security-critical components, aligning with NIST SP 800-53 requirements for secure system design and implementation. Additional defensive measures should include regular security assessments of embedded systems, proper memory protection mechanisms such as stack canaries and address space layout randomization, and comprehensive incident response procedures for potential credential exposure events.