CVE-2022-45720 in M50
Summary
by MITRE • 12/23/2022
IP-COM M50 V15.11.0.33(10768) was discovered to contain multiple buffer overflows via the ip, mac, and remark parameters in the formIPMacBindModify function.
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Analysis
by VulDB Data Team • 01/23/2023
The vulnerability identified as CVE-2022-45720 affects IP-COM M50 devices running 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 formIPMacBindModify function which processes user input parameters including ip, mac, and remark fields. The vulnerability stems from inadequate input validation and bounds checking mechanisms that fail to properly sanitize or limit the length of data submitted through these parameters, creating opportunities for malicious actors to exploit the device's memory management.
The technical implementation of this vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions where insufficient bounds checking allows attackers to write beyond allocated memory buffers. When an attacker submits maliciously crafted input data exceeding the predetermined buffer limits through any of the three vulnerable parameters, the device's processing routine fails to handle the overflow gracefully, potentially leading to memory corruption. This type of vulnerability falls under the broader category of memory safety issues that can result in arbitrary code execution, system crashes, or unauthorized access to device functionality.
The operational impact of this vulnerability extends beyond simple denial of service conditions, as it provides attackers with potential pathways for privilege escalation and persistent access to network infrastructure. An attacker could leverage this vulnerability to inject malicious code into the device's memory space, potentially gaining administrative control over the network management functions. The affected device operates as a network management appliance, making it a critical component in network security infrastructure where unauthorized access could compromise entire network segments. This vulnerability directly impacts the integrity and availability of network services managed by the device.
Mitigation strategies for CVE-2022-45720 should prioritize immediate firmware updates from IP-COM to address the buffer overflow conditions in the affected device models. Network administrators should implement network segmentation and access controls to limit exposure of vulnerable devices to untrusted networks. The implementation of input validation measures at network boundaries, such as web application firewalls, can provide additional protection layers against exploitation attempts. Security monitoring should include detection of unusual traffic patterns or malformed requests targeting the specific formIPMacBindModify function, which could indicate exploitation attempts. Organizations should also conduct comprehensive vulnerability assessments to identify other potentially affected IP-COM devices within their network infrastructure, as similar vulnerabilities may exist in other firmware versions or device models. The ATT&CK framework categorizes this vulnerability under T1210 - Exploitation of Remote Services, highlighting the need for robust network security controls and regular patch management procedures to prevent successful exploitation attempts.