CVE-2021-42740
Apache Shell-quote Node.js Command Injection Vulnerability
Description
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.
INFO
Published Date :
Oct. 21, 2021, 3:15 p.m.
Last Modified :
Nov. 21, 2024, 6:28 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2021-42740 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-42740.
| URL | Resource |
|---|---|
| https://github.com/substack/node-shell-quote/blob/master/CHANGELOG.md#173 | Third Party Advisory |
| https://github.com/substack/node-shell-quote/commit/5799416ed454aa4ec9afafc895b4e31760ea1abe | Patch Third Party Advisory |
| https://www.npmjs.com/package/shell-quote | Vendor Advisory |
| https://github.com/substack/node-shell-quote/blob/master/CHANGELOG.md#173 | Third Party Advisory |
| https://github.com/substack/node-shell-quote/commit/5799416ed454aa4ec9afafc895b4e31760ea1abe | Patch Third Party Advisory |
| https://www.npmjs.com/package/shell-quote | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
JavaScript Vue TypeScript SCSS CSS
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-42740 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-42740 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://github.com/substack/node-shell-quote/blob/master/CHANGELOG.md#173 Added Reference https://github.com/substack/node-shell-quote/commit/5799416ed454aa4ec9afafc895b4e31760ea1abe Added Reference https://www.npmjs.com/package/shell-quote -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Oct. 28, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://github.com/substack/node-shell-quote/blob/master/CHANGELOG.md#173 No Types Assigned https://github.com/substack/node-shell-quote/blob/master/CHANGELOG.md#173 Third Party Advisory Changed Reference Type https://github.com/substack/node-shell-quote/commit/5799416ed454aa4ec9afafc895b4e31760ea1abe No Types Assigned https://github.com/substack/node-shell-quote/commit/5799416ed454aa4ec9afafc895b4e31760ea1abe Patch, Third Party Advisory Changed Reference Type https://www.npmjs.com/package/shell-quote No Types Assigned https://www.npmjs.com/package/shell-quote Vendor Advisory Added CWE NIST CWE-77 Added CPE Configuration OR *cpe:2.3:a:shell-quote_project:shell-quote:*:*:*:*:*:node.js:*:* versions up to (excluding) 1.7.3
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-42740 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-42740
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
7.54 }} 2.96%
score
0.91306
percentile