CVE-2021-23632

Remote Code Execution (RCE)

Medium · published March 17, 2022

CVSS v3.1
6.6
EPSS
2%
Percentile
83.6
In the wild
Unconfirmed
What it is

All versions of package git 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 1. Create a file named exploit.js with the following content: js 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); }) 2. In the same directory as exploit.js, run npm install git. 3. 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.

The record
Technical detail
CVSS v3.1
6.6 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.02350 · 83.6th percentile
Published
2022-03-17T11:20Z
EPSS history
Timeline
  • 17 MAR 11:20Z
    Remote Code Execution (RCE)
    cvelistv5