Fix CVE–2021–42740

[debricked]

CVE–2021–42740

Vulnerable dependency:     shell-quote (Yarn)    1.7.2

Vulnerability details

Description

Improper Neutralization of Special Elements used in a Command ('Command Injection')

The software constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.

NVD

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.

CVSS details - 9.8

 

CVSS3 metrics
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

References

    NVD - CVE-2021-42740
    node-shell-quote/CHANGELOG.md at master · substack/node-shell-quote · GitHub
    fix for security issue with windows drive letter regex · substack/node-shell-quote@5799416 · GitHub
    shell-quote - npm
    GitHub - substack/node-shell-quote: quote and parse shell commands

 

Related information

📌 Remember! Check the changes to ensure they don't introduce any breaking changes.
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