Command Injection Affecting czproject/git-php Open this link in a new tab package, versions <4.0.3


0.0
high
  • Exploit Maturity

    Proof of concept

  • Attack Complexity

    High

  • Confidentiality

    High

  • Integrity

    High

  • Availability

    High

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  • snyk-id

    SNYK-PHP-CZPROJECTGITPHP-2421349

  • published

    25 Apr 2022

  • disclosed

    11 Mar 2022

  • credit

    Alessio Della Libera of Snyk Research Team

How to fix?

Upgrade czproject/git-php to version 4.0.3 or higher.

Overview

czproject/git-php is a Library for work with Git repository in PHP.

Affected versions of this package are vulnerable to Command Injection via git argument injection. When calling the isRemoteUrlReadable($url, array $refs = NULL) function, both the url and refs parameters are passed to the git ls-remote subcommand in a way that additional flags can be set. The additional flags can be used to perform a command injection.

PoC

<?php
require('./vendor/autoload.php');

$git = new CzProject\GitPhp\Git;

$url = "--upload-pack=touch ./HELLO";

$git->isRemoteUrlReadable($url, ["refs"]);

?>