CVE-2021-42740

描述

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.

如何修補 CVE-2021-42740

要修補 CVE-2021-42740,請將受影響套件升級到下列已修補版本。

• —升級至 1.7.3+~1.7.1-1 或更新版本
• —升級至 1.7.3 或更新版本

CVE-2021-42740 正在被利用嗎?

低 — EPSS 為 4.3%,目前沒有觀察到大規模利用活動。

受影響套件(2)

• from 0, < 1.7.3+~1.7.1-1
• >= 1.6.3, < 1.7.3

CVSS 分數

參考連結(6)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2021-42740
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2021-42740
• PATCHgithub.com/ljharb/shell-quote
• WEBgithub.com/ljharb/shell-quote/blob/master/CHANGELOG.md#173