CVE-2024-41886 in XRN-420S
Summary
by MITRE • 12/24/2024
Team ENVY, a Security Research TEAM has found a flaw that allows for a remote code execution on the NVR. An attacker could inject malformed data into url input parameters to reboot the NVR. The manufacturer has released patch firmware for the flaw, please refer to the manufacturer's report for details and workarounds.
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Analysis
by VulDB Data Team • 12/24/2024
The vulnerability identified as CVE-2024-41886 represents a critical remote code execution flaw within Network Video Recorder (NVR) systems manufactured by Team ENVY. This security weakness stems from insufficient input validation mechanisms that fail to properly sanitize URL parameters, creating an exploitable condition that allows remote attackers to manipulate the device's operational state. The flaw specifically manifests when malformed data is injected into URL input parameters, which can then trigger unintended system behavior including unauthorized device reboot operations.
The technical implementation of this vulnerability falls under the category of improper input validation as classified by CWE-20, where the system fails to adequately validate or sanitize user-supplied data before processing. The flaw exploits the NVR's handling of URL parameters without proper sanitization or filtering mechanisms, allowing attackers to inject malicious payloads that bypass normal operational controls. This type of vulnerability typically resides in the web application layer of NVR systems, where HTTP request parameters are processed without adequate security controls. The attack vector specifically targets the device's URL parsing functionality, where the system fails to distinguish between legitimate and malicious input, creating an opportunity for unauthorized system manipulation.
From an operational standpoint, the impact of this vulnerability extends beyond simple denial of service conditions to potentially enable more sophisticated attack scenarios. While the current report indicates that the primary effect is device reboot functionality, remote code execution vulnerabilities of this nature often serve as stepping stones for more comprehensive system compromise. Attackers could potentially leverage this initial foothold to escalate privileges, access sensitive video feeds, or manipulate device configurations. The remote nature of the vulnerability means that attackers do not require physical access to the device, significantly expanding the potential attack surface and attack vectors available to malicious actors.
The security implications of CVE-2024-41886 align with tactics and techniques documented in the MITRE ATT&CK framework, particularly under the initial access and privilege escalation domains. The vulnerability could be categorized under T1190 for exploit public-facing application and T1068 for exploit known system vulnerabilities, representing how attackers might leverage this flaw to gain unauthorized access to network video surveillance systems. Organizations utilizing affected NVR systems face significant risk as these devices often serve as critical components in security infrastructure, making them attractive targets for cyber adversaries seeking to disrupt operations or gain access to sensitive surveillance data.
The manufacturer's response to this vulnerability through firmware patching represents the standard remediation approach for such issues, addressing the root cause by implementing proper input validation and sanitization mechanisms. However, organizations should implement additional mitigations beyond simple patching, including network segmentation to isolate NVR systems, monitoring for unusual reboot patterns, and implementing network access controls to limit exposure to untrusted networks. The patching process should be prioritized immediately, as the vulnerability's remote exploitability and potential for escalation make it a high-priority concern for security teams. Continuous monitoring and vulnerability assessment programs should be enhanced to identify similar input validation weaknesses in other networked security devices and systems that may present similar attack surfaces.