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
Vulnerable Library - shell-quote-1.7.2.tgz
quote and parse shell commands
Library home page: https://registry.npmjs.org/shell-quote/-/shell-quote-1.7.2.tgz
Path to dependency file: /tilt_modules/tilt_inspector/package.json
Path to vulnerable library: /tilt_modules/tilt_inspector/node_modules/shell-quote/package.json
Dependency Hierarchy: - tilt-inspector-0.1.8.tgz (Root Library) - next-11.1.4.tgz - react-dev-overlay-11.1.4.tgz - :x: **shell-quote-1.7.2.tgz** (Vulnerable Library)
Found in HEAD commit: 47aa89ce804fd2b85cc9925fb7fcc36f8cf971fb
Found in base branch: master
Vulnerability Details
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
CVSS 3 Score Details (9.8)
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.Suggested Fix
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
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