The shell-quote package before 1.7.3 for Node.js allows command injection. An attacker can inject unescaped shell metacharacters through a regex designed to support Windows drive letters. If the output of this package is passed to a real shell as a quoted argument to a command with exec(), an attacker can inject arbitrary commands. This is because the Windows drive letter regex character class is {A-z] instead of the correct {A-Za-z]. Several shell metacharacters exist in the space between capital letter Z and lower case letter a, such as the backtick character.
CVE-2021-42740 - Critical Severity Vulnerability
quote and parse shell commands
Library home page: https://registry.npmjs.org/shell-quote/-/shell-quote-1.7.2.tgz
Path to dependency file: /client/package.json
Path to vulnerable library: /client/node_modules/shell-quote/package.json
Dependency Hierarchy: - react-scripts-3.4.1.tgz (Root Library) - react-dev-utils-10.2.1.tgz - :x: **shell-quote-1.7.2.tgz** (Vulnerable Library)
Found in HEAD commit: 82d6429ed19093dbc56c092123fe7358b66c67b7
Found in base branch: master
The shell-quote package before 1.7.3 for Node.js allows command injection. An attacker can inject unescaped shell metacharacters through a regex designed to support Windows drive letters. If the output of this package is passed to a real shell as a quoted argument to a command with exec(), an attacker can inject arbitrary commands. This is because the Windows drive letter regex character class is {A-z] instead of the correct {A-Za-z]. Several shell metacharacters exist in the space between capital letter Z and lower case letter a, such as the backtick character.
Publish Date: 2021-10-21
URL: CVE-2021-42740
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: High - Integrity Impact: High - Availability Impact: High
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42740
Release Date: 2021-10-21
Fix Resolution (shell-quote): 1.7.3
Direct dependency fix Resolution (react-scripts): 5.0.0
Step up your Open Source Security Game with Mend here