Vulnerabilities in pkg:npm/git

PACKAGE
Advisory Identifier: GHSA-9gqr-xp86-f87h
Share
Advisory Summary

CVE-2021-23632 is a MODERATE (CVSS 6.6) code injection vulnerability (CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')) affecting Git libraries in the npm ecosystem. The issue involves code injection in npm git. Remediation is available in the latest vendor maintenance releases.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/git

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:npm/git. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-9gqr-xp86-f87h CVE-2021-23632 MODERATE Code injection in npm git

CVE-2021-23632 at a Glance

CVE Identifier CVE-2021-23632
GHSA Identifier GHSA-9gqr-xp86-f87h
Severity MODERATE
CVSS v3.1 Base Score 6.6
CWE Classification CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Product Git
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 6.6

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required High (PR:H)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2021-23632

To remediate this vulnerability, upgrade all affected Git dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

git fixed: Latest secure release 
npm install git@Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls git

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2021-23632, inspect your project dependencies using npm:

npm ls git

Analyze the terminal output to locate any version of Git in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The npm ls git command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'), where the product constructs all or part of an os command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended os command when it is sent to a downstream component. In Git, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

All versions of package git are vulnerable to Remote Code Execution (RCE) due to missing sanitization in the Git.git method, which allows execution of OS commands rather than just git commands. At this time, there is no known workaround. There has been no patch released.

CVE-2021-23632 Affected Git Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
git
npm/git
npm
≤ 0.1.5

References

NVD — CVE-2021-23632 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-23632
snyk.io/vuln/snyk-js-git-15... WEB
https://snyk.io/vuln/SNYK-JS-GIT-1568518

Frequently Asked Questions

What is CVE-2021-23632?
CVE-2021-23632 is a security vulnerability in Git involving Code injection in npm git under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection').
Which Git versions are affected?
Affected versions include releases prior to current release patches across affected packages: git.
What version fixes CVE-2021-23632?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is git affected?
Yes, git is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2021-23632?
CVE-2021-23632 has a CVSS v3.1 base score of 6.6 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2021-23632?
CVE-2021-23632 is classified under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') (The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.).
How can I check npm dependencies for CVE-2021-23632?
Run the dependency tree command: 'npm ls git'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-9gqr-xp86-f87h",
  "modified" : "2022-03-25T16:13:13Z",
  "published" : "2022-03-18T00:01:11Z",
  "aliases" : [ "CVE-2021-23632" ],
  "summary" : "Code injection in npm git",
  "details" : "All versions of package git are vulnerable to Remote Code Execution (RCE) due to missing sanitization in the Git.git method, which allows execution of OS commands rather than just git commands. At this time, there is no known workaround. There has been no patch released.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "git"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.1.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-23632"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-GIT-1568518"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-78", "CWE-94" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-03-18T22:39:15Z",
    "nvd_published_at" : "2022-03-17T12:15:00Z"
  }
}