CVE-2020-7601 in gulp-scss-lint
Summary
by MITRE
gulp-scss-lint through 1.0.0 allows execution of arbitrary commands. It is possible to inject arbitrary commands to the "exec" function located in "src/command.js" via the provided options.
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Analysis
by VulDB Data Team • 04/16/2024
The vulnerability identified as CVE-2020-7601 affects the gulp-scss-lint plugin version 1.0.0 and earlier, representing a critical command injection flaw that enables attackers to execute arbitrary code on systems where this plugin is installed. This issue stems from insufficient input validation and sanitization within the plugin's command execution mechanism, specifically in the src/command.js file where the exec function processes user-provided options without proper sanitization. The vulnerability is classified under CWE-78 as a "Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')" which is a well-documented weakness in software security practices.
The technical exploitation of this vulnerability occurs when an attacker can manipulate the options parameter passed to the exec function, allowing them to inject malicious commands that will be executed with the privileges of the process running the gulp-scss-lint plugin. This typically happens in development environments where the plugin is used to lint scss files, and attackers can craft malicious input that gets processed through the vulnerable command execution path. The flaw is particularly dangerous because it can be exploited during normal plugin operation when processing user-supplied or untrusted input, potentially leading to complete system compromise.
From an operational impact perspective, this vulnerability poses significant risks to development environments and continuous integration pipelines that utilize the affected plugin. Attackers can leverage this weakness to execute arbitrary commands on development machines, potentially gaining access to source code repositories, sensitive configuration files, or even escalating privileges to access network resources. The vulnerability affects not only individual developers but also automated build systems and deployment pipelines that may be running with elevated privileges. According to ATT&CK framework, this vulnerability maps to T1059.001 (Command and Scripting Interpreter: PowerShell) and T1059.003 (Command and Scripting Interpreter: Windows Command Shell) as attackers can leverage command injection to execute malicious payloads through various shell environments.
Mitigation strategies for CVE-2020-7601 should prioritize immediate patching of the gulp-scss-lint plugin to version 1.0.1 or later, which addresses the command injection vulnerability through proper input sanitization and validation. Organizations should also implement input validation measures at the application level, ensuring that all user-provided options are properly escaped or sanitized before being passed to system execution functions. Network segmentation and privilege separation should be enforced to limit the potential impact of successful exploitation, ensuring that development environments operate with minimal necessary privileges. Additionally, security monitoring should be enhanced to detect suspicious command execution patterns, and regular security audits should be conducted to identify and remediate similar vulnerabilities in other development tools and plugins. The vulnerability highlights the importance of secure coding practices and input validation in preventing command injection attacks, particularly in development tools that interact with system commands.