GHSA-4qqc-mp5f-ccv4: Bestzip Command Injection Vulnerability

CRITICAL
Share
CWE-77
Published
Advisory Summary

GHSA-4qqc-mp5f-ccv4 is a CRITICAL command injection vulnerability (CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')) affecting Bestzip libraries in the npm ecosystem. The issue involves command injection in bestzip. Remediation is available by upgrading affected packages to version 2.1.7.

GHSA-4qqc-mp5f-ccv4 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-4qqc-mp5f-ccv4
Severity CRITICAL
CVSS v3.1 Base Score N/A
CWE Classification CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
Affected Product Bestzip
Package Ecosystem npm
Published Date
Last Updated

How to Fix GHSA-4qqc-mp5f-ccv4

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

bestzip fixed: 2.1.7 
npm install bestzip@2.1.7
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 bestzip

How to Check if You Are Affected

To determine whether your Node.js application is affected by GHSA-4qqc-mp5f-ccv4, inspect your project dependencies using npm:

npm ls bestzip

Analyze the terminal output to locate any version of Bestzip in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.1.7), your application is affected.

Note: The npm ls bestzip 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-77: Improper Neutralization of Special Elements used in a Command ('Command Injection'), where the product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. In Bestzip, 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

Versions of `bestzip` prior to 2.1.7 are vulnerable to Command Injection. The package fails to sanitize input rules and passes it directly to an `exec` call on the `zip` function . This may allow attackers to execute arbitrary code in the system as long as the values of `destination` is user-controlled. This only affects users with a native `zip` command available. The following examples demonstrate the issue from the CLI and also programatically: - `bestzip test.zip 'sourcefile; mkdir folder'` - `zip({ source: 'sourcefile', destination: './test.zip; mkdir folder' })`

GHSA-4qqc-mp5f-ccv4 Affected Bestzip Versions

1 component(s)
Fixed Versions:
2.1.7
Product / Package Ecosystem Affected Versions Fixed Version
bestzip
npm/bestzip
npm
< 2.1.7
2.1.7

References

www.npmjs.com/advisories/1554 WEB
https://www.npmjs.com/advisories/1554

Frequently Asked Questions

What is GHSA-4qqc-mp5f-ccv4?
GHSA-4qqc-mp5f-ccv4 is a security vulnerability in Bestzip involving Command Injection in bestzip under CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection').
Which Bestzip versions are affected?
Affected versions include releases prior to 2.1.7 across affected packages: bestzip.
What version fixes GHSA-4qqc-mp5f-ccv4?
Upgrading to 2.1.7 (or the latest patched release for your respective branch) resolves the vulnerability.
Is bestzip affected?
Yes, bestzip is affected in releases prior to 2.1.7. Upgrade your dependency to 2.1.7 or later.
What CWE is associated with GHSA-4qqc-mp5f-ccv4?
GHSA-4qqc-mp5f-ccv4 is classified under CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') (The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.).
How can I check npm dependencies for GHSA-4qqc-mp5f-ccv4?
Run the dependency tree command: 'npm ls bestzip'. 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-4qqc-mp5f-ccv4",
  "modified" : "2020-09-02T15:04:08Z",
  "published" : "2020-09-02T15:05:51Z",
  "aliases" : [ ],
  "summary" : "Command Injection in bestzip",
  "details" : "Versions of `bestzip` prior to 2.1.7 are vulnerable to Command Injection. The package fails to sanitize input rules and passes it directly to an `exec` call on the `zip` function . This may allow attackers to execute arbitrary code in the system as long as the values of `destination` is user-controlled. This only affects users with a native `zip` command available. The following examples demonstrate the issue from the CLI and also programatically:\n- `bestzip test.zip 'sourcefile; mkdir folder'`\n- `zip({ source: 'sourcefile', destination: './test.zip; mkdir folder' })`",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "bestzip"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.1.7"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/1554"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-77" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-09-02T15:04:08Z",
    "nvd_published_at" : null
  }
}