CVE-2022-45718 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 rules parameter in the formIPMacBindAdd function.
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Analysis
by VulDB Data Team • 01/23/2023
The vulnerability identified as CVE-2022-45718 affects IP-COM M50 firmware version V15.11.0.33(10768) and represents a critical buffer overflow condition within the device's web interface management functionality. This flaw exists in the formIPMacBindAdd function which processes network binding rules through the rules parameter, creating an exploitable condition that could allow remote code execution or system compromise. The vulnerability demonstrates a classic buffer overflow pattern where insufficient input validation permits excessive data to be written into a fixed-length buffer, potentially overwriting adjacent memory locations and disrupting normal system operations.
The technical implementation of this vulnerability stems from improper bounds checking within the web application layer of the IP-COM M50 device. When the formIPMacBindAdd function receives input through the rules parameter, it fails to adequately validate the length or content of the submitted data before processing. This allows an attacker to craft malicious input that exceeds the allocated buffer space, leading to memory corruption that can be leveraged to execute arbitrary code. The vulnerability is particularly concerning as it exists within the device's administrative interface, potentially enabling unauthorized users to gain elevated privileges and control over the network device's operations.
The operational impact of this buffer overflow vulnerability extends beyond simple denial of service conditions to encompass full system compromise and potential network infiltration. An attacker exploiting this vulnerability could gain root access to the device, allowing them to modify network configurations, establish persistent backdoors, or use the compromised device as a pivot point for attacking other systems within the network. The device's role as a network management component makes it a valuable target for attackers seeking to maintain long-term access to network infrastructure. This vulnerability also aligns with attack patterns described in the MITRE ATT&CK framework under the T1059.007 technique for command and scripting interpreter, as successful exploitation would enable command execution capabilities.
Security implications of this vulnerability are compounded by the fact that it affects a network device with default administrative access points that may be accessible from untrusted networks. The buffer overflow condition creates a pathway for remote exploitation without requiring authentication, making the device particularly vulnerable in environments where network segmentation is inadequate. Organizations using IP-COM M50 devices should consider this vulnerability in their risk assessment frameworks, particularly when evaluating their network security postures and incident response capabilities. The vulnerability's classification under CWE-121 buffer overflow represents a well-documented weakness that has been exploited in numerous other network device vulnerabilities, emphasizing the importance of proper input validation and memory management practices.
Mitigation strategies for CVE-2022-45718 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 management interfaces and establish strict access controls using multi-factor authentication where possible. Regular network monitoring should be deployed to detect anomalous traffic patterns that might indicate exploitation attempts, while security teams should maintain updated vulnerability assessments to identify similar weaknesses in other network infrastructure components. The remediation process should include thorough network scanning to identify all affected devices and implementation of network access controls to prevent unauthorized access to administrative interfaces, particularly in environments where default credentials or weak authentication mechanisms might exist.