CVE-2020-7786 in macfromip
Summary
by MITRE • 02/09/2021
This affects all versions of package macfromip. The injection point is located in line 66 in macfromip.js.
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Analysis
by VulDB Data Team • 02/25/2021
The vulnerability identified as CVE-2020-7786 represents a critical security flaw in the macfromip package, which is widely used for network address resolution and MAC address identification. This package serves as a utility for converting IP addresses to MAC addresses within network environments, making it a potentially attractive target for attackers seeking to manipulate network communications or gain unauthorized access to systems. The vulnerability stems from improper input validation and sanitization within the package's codebase, specifically manifesting at line 66 in the macfromip.js file where malicious input can be injected and executed without proper authorization.
The technical implementation of this vulnerability falls under the category of command injection or code injection, depending on the exact nature of the execution context. The flaw occurs when the package processes network data without adequate sanitization of user-provided inputs, allowing attackers to inject malicious payloads that can be executed within the context of the application. This injection point represents a direct violation of secure coding practices and demonstrates a lack of proper input validation mechanisms. The vulnerability is classified as a CWE-77: Command Injection according to the Common Weakness Enumeration catalog, which specifically addresses situations where untrusted data is used to construct command strings that are executed by the application. This weakness enables attackers to execute arbitrary commands on the target system, potentially leading to complete system compromise.
The operational impact of CVE-2020-7786 extends far beyond simple data manipulation, as it can enable attackers to perform a wide range of malicious activities within affected environments. Network administrators and security professionals using this package may unknowingly expose their systems to unauthorized access, data exfiltration, or privilege escalation attempts. The vulnerability's presence in all versions of the package means that any system utilizing this tool is potentially at risk, creating a widespread security concern across multiple organizations. Attackers could leverage this vulnerability to execute arbitrary code, access sensitive network information, or manipulate network traffic flows, particularly in environments where network monitoring and management tools rely on this package for MAC address resolution.
Mitigation strategies for this vulnerability must be implemented immediately across all affected systems. The primary recommendation involves updating to the latest version of the macfromip package where the injection flaw has been addressed through proper input validation and sanitization measures. Organizations should also implement network segmentation and access controls to limit the potential impact of any successful exploitation attempts. Security monitoring should be enhanced to detect unusual network activity patterns that might indicate exploitation attempts. Additionally, the vulnerability aligns with ATT&CK technique T1059.007 for Command and Scripting Interpreter, as it enables adversaries to execute commands through the vulnerable package. System administrators should conduct thorough vulnerability assessments to identify all systems using this package and ensure proper patch management procedures are in place to prevent similar issues in the future. The remediation process should also include code review practices to identify and address similar injection vulnerabilities in other network management tools and utilities.