CVE-2020-7602 in node-prompt-here
Summary
by MITRE
node-prompt-here through 1.0.1 allows execution of arbitrary commands. The "runCommand()" is called by "getDevices()" function in file "linux/manager.js", which is required by the "index. process.env.NM_CLI" in the file "linux/manager.js". This function is used to construct the argument of function "execSync()", which can be controlled by users without any sanitization.
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Analysis
by VulDB Data Team • 04/16/2024
The vulnerability identified as CVE-2020-7602 resides within the node-prompt-here package version 1.0.1 and earlier, presenting a critical command injection flaw that enables arbitrary code execution. This security weakness manifests through the improper handling of user-controllable input within the linux/manager.js file, specifically within the getDevices() function that invokes runCommand(). The vulnerability stems from the direct incorporation of user-supplied data into system command execution without adequate sanitization or validation measures.
The technical implementation of this vulnerability occurs when the process.env.NM_CLI environment variable is utilized within the linux/manager.js file to construct arguments for the execSync() function. This design pattern creates a dangerous attack surface where malicious actors can inject arbitrary commands through the NM_CLI environment variable, as the input flows directly into system execution without any form of input validation or sanitization. The absence of proper input filtering mechanisms allows attackers to manipulate the command execution flow and potentially gain unauthorized system access.
This vulnerability has significant operational impact across various deployment scenarios where the affected package is utilized. The command injection flaw could enable attackers to execute arbitrary system commands with the privileges of the process running the vulnerable code, potentially leading to complete system compromise. Attackers might leverage this vulnerability to install malware, exfiltrate sensitive data, or establish persistent backdoors within affected systems. The vulnerability is particularly concerning in environments where the package is used for device management or network configuration tasks, as it could allow unauthorized users to manipulate network infrastructure components.
The security implications of CVE-2020-7602 align with CWE-78, which specifically addresses OS Command Injection vulnerabilities, and follows the ATT&CK technique T1059.001 for command and scripting interpreter. Organizations utilizing this package in production environments should immediately implement mitigations including updating to a patched version of node-prompt-here, implementing proper input validation for environment variables, and restricting the execution environment to limit potential attack surface. Additionally, system administrators should monitor for suspicious command execution patterns and implement proper access controls to minimize the impact of potential exploitation. The vulnerability demonstrates the critical importance of input sanitization in system command execution contexts and serves as a reminder of the dangers associated with directly incorporating user-supplied data into system-level operations without proper validation mechanisms.