CVE-2024-41883 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 enters a special value for a specific URL parameter, resulting in a NULL pointer reference and a reboot of 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-2024-41883 represents a critical remote code execution flaw within Team ENVY's NVR (Network Video Recorder) systems. This security weakness stems from improper input validation mechanisms that fail to adequately sanitize URL parameters, creating an exploitable condition that can be leveraged by remote attackers to compromise the device. The flaw manifests when a specially crafted value is passed through a specific URL parameter, triggering a NULL pointer dereference condition that ultimately results in system reboot operations. This type of vulnerability falls under the CWE-476 category of NULL Pointer Dereference, which represents a fundamental programming error where an application attempts to access memory through a null pointer reference without proper validation checks. The impact extends beyond simple system disruption as the reboot mechanism can be exploited to cause denial of service conditions while potentially providing attackers with opportunities to execute malicious code during the device restart process.
The operational implications of this vulnerability are significant for organizations relying on NVR systems for security monitoring and surveillance operations. Remote code execution capabilities allow attackers to gain unauthorized control over network video recording devices, potentially enabling them to access live video feeds, modify recording configurations, disable security features, or even use the compromised NVR as a pivot point for attacking other devices within the same network segment. The attack vector remains particularly concerning as it requires no authentication or local access, making it accessible to any remote actor who can reach the device through network connections. This vulnerability aligns with ATT&CK technique T1059.007 for Command and Scripting Interpreter, as successful exploitation could enable adversaries to execute arbitrary commands on the affected system. The fact that the manufacturer has released firmware patches indicates that this vulnerability was properly identified and addressed through proper vulnerability management processes, though organizations must ensure timely deployment of these updates to maintain system integrity.
Organizations utilizing NVR systems should prioritize immediate implementation of the manufacturer-provided firmware updates to remediate this vulnerability. The patching process should be carefully coordinated to minimize disruption to surveillance operations while ensuring complete protection against exploitation attempts. Additional mitigations include network segmentation strategies that isolate NVR devices from general network traffic, implementing firewall rules that restrict access to NVR management interfaces, and deploying intrusion detection systems to monitor for suspicious URL parameter patterns that might indicate exploitation attempts. Security teams should also conduct thorough vulnerability assessments to identify any other potentially affected devices within their network infrastructure, as similar input validation flaws may exist in other components. The incident highlights the importance of maintaining current firmware versions and implementing robust network monitoring practices to detect anomalous behavior patterns that could indicate exploitation attempts. Organizations should consider implementing zero-trust network architectures that verify all network traffic and limit access to critical infrastructure components based on least privilege principles. Regular security audits and penetration testing should be conducted to identify potential vulnerabilities before they can be exploited by malicious actors, ensuring that security controls remain effective against evolving threat landscapes.