CVE-2024-23969 in Home Flex
Summary
by MITRE • 01/31/2025
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of ChargePoint Home Flex charging stations. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the wlanchnllst function. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of root.
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Analysis
by VulDB Data Team • 07/01/2025
The CVE-2024-23969 vulnerability represents a critical security flaw in ChargePoint Home Flex charging stations that exposes these devices to remote code execution attacks. This vulnerability is particularly concerning because it requires no authentication for exploitation, making it accessible to any network-adjacent attacker who can reach the device. The flaw resides within the wlanchnllst function, which processes network-related data from wireless channel lists, creating a pathway for malicious actors to inject and execute arbitrary code on the affected hardware. The vulnerability's severity is amplified by its ability to execute code with root privileges, effectively granting attackers complete control over the charging station's operational environment.
The technical root cause of this vulnerability stems from inadequate input validation within the wlanchnllst function, specifically failing to properly validate user-supplied data. This lack of validation creates a classic buffer overflow condition where attacker-controlled data can overwrite memory beyond the bounds of allocated buffers. The write past the end of an allocated buffer represents a fundamental memory safety issue that aligns with CWE-121 buffer overflow conditions and CWE-787 out-of-bounds write vulnerabilities. This type of flaw typically occurs when developers fail to implement proper bounds checking on input data, allowing attackers to craft malicious inputs that can manipulate memory layout and potentially redirect program execution flow.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it enables attackers to gain complete system compromise with root-level privileges. This level of access allows malicious actors to modify charging station configurations, manipulate charging sessions, potentially access sensitive data, and even use the devices as entry points for broader network attacks. The implications are particularly severe for organizations relying on ChargePoint charging infrastructure, as these devices often serve as critical components in electric vehicle charging networks and may be connected to corporate networks. The vulnerability's network-adjacent requirement means that attackers don't need physical access or specialized equipment to exploit the flaw, making it a significant threat to enterprise and residential charging deployments alike.
Security mitigations for CVE-2024-23969 should prioritize immediate firmware updates from ChargePoint to address the buffer overflow vulnerability in the wlanchnllst function. Organizations should implement network segmentation to isolate charging stations from critical network segments and consider deploying network monitoring solutions to detect anomalous traffic patterns that might indicate exploitation attempts. The vulnerability's classification under ATT&CK framework category T1059 command and control and T1068 local privilege escalation highlights the need for comprehensive security controls that address both network-level and system-level threats. Additionally, implementing network access controls such as firewalls and access control lists can help prevent unauthorized network access to these devices, while regular security assessments and vulnerability scanning should be conducted to identify potential exploitation vectors and ensure proper patch management processes are maintained across all charging infrastructure deployments.