CVE-2022-45716 in M50
Summary
by MITRE • 12/23/2022
IP-COM M50 V15.11.0.33(10768) was discovered to contain a buffer overflow via the indexSet parameter in the formIPMacBindDel function.
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Analysis
by VulDB Data Team • 04/15/2025
The vulnerability identified as CVE-2022-45716 affects IP-COM M50 firmware version V15.11.0.33(10768) and represents a critical buffer overflow condition within the formIPMacBindDel function. This issue arises specifically through manipulation of the indexSet parameter, creating a scenario where malicious input can exceed the allocated buffer space and overwrite adjacent memory regions. The affected device operates within the networking equipment category, specifically targeting IP-COM M50 models that utilize embedded web interfaces for configuration management. Buffer overflow vulnerabilities of this nature typically occur when programs fail to properly validate input lengths before copying data into fixed-size buffers, creating opportunities for arbitrary code execution or system instability.
The technical flaw manifests when the formIPMacBindDel function processes the indexSet parameter without adequate bounds checking or input sanitization. This parameter is likely used to identify specific network binding entries within the device's MAC address table or IP configuration settings. When an attacker supplies a specially crafted indexSet value that exceeds the expected buffer capacity, the overflow can corrupt adjacent memory locations including return addresses, function pointers, or other critical control data structures. The vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions, and may also exhibit characteristics of CWE-787, representing out-of-bounds write vulnerabilities that can lead to complete system compromise. The attack vector requires interaction with the device's web interface, making it accessible to remote threat actors who can exploit the vulnerability through web-based attacks.
The operational impact of this vulnerability extends beyond simple system instability to encompass potential complete system compromise and unauthorized access to network infrastructure. An attacker who successfully exploits this buffer overflow could execute arbitrary code with the privileges of the web server process, potentially leading to full device control, data exfiltration, or use as a pivot point for further attacks within the network. The vulnerability affects network administrators who rely on the device for critical infrastructure functions, as compromise of the M50 device could disrupt network services or provide attackers with persistent access to the network. This issue particularly impacts organizations using IP-COM M50 devices in enterprise or industrial environments where network reliability and security are paramount, as the device may serve as a critical component in network access control or traffic management functions.
Mitigation strategies for CVE-2022-45716 should prioritize immediate firmware updates from IP-COM to address the underlying buffer overflow condition. Network administrators should implement network segmentation to limit access to affected devices and employ web application firewalls to filter potentially malicious requests targeting the vulnerable formIPMacBindDel function. Additional defensive measures include disabling unnecessary web interfaces, implementing strict access controls, and monitoring for anomalous network traffic patterns that may indicate exploitation attempts. The vulnerability demonstrates the importance of input validation and proper buffer management in embedded systems, aligning with ATT&CK technique T1210 for exploiting buffer overflow vulnerabilities and T1071 for application layer protocol usage. Organizations should conduct thorough vulnerability assessments of their network infrastructure to identify other potentially affected IP-COM devices or similar embedded systems that may share the same vulnerability patterns, ensuring comprehensive protection across their entire network ecosystem.