CRITICAL 9.8
GHSA-g4rg-993r-mgx7
Improper Neutralization of Special Elements used in a Command in Shell-quote
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.
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Affected packages
References
- https://nvd.nist.gov/vuln/detail/CVE-2021-42740 [ADVISORY]
- https://github.com/ljharb/shell-quote/commit/5799416ed454aa4ec9afafc895b4e31760ea1abe [WEB]
- https://github.com/ljharb/shell-quote [PACKAGE]
- https://github.com/ljharb/shell-quote/blob/master/CHANGELOG.md#173 [WEB]
- https://www.npmjs.com/package/shell-quote [WEB]