CVE-2020-19316: Laravel/framework OS Command Injection Vulnerability

HIGH
Advisory Identifier: GHSA-w2pm-r78h-4m7v
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CVSS 8.8
CWE-78
Published
Advisory Summary

CVE-2020-19316 is a HIGH (CVSS 8.8) os command injection vulnerability (CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')) affecting Laravel/framework libraries in the Packagist ecosystem. The issue involves os command injection in laravel framework. Remediation is available by upgrading affected packages to version 5.8.17.

CVE-2020-19316 at a Glance

CVE Identifier CVE-2020-19316
GHSA Identifier GHSA-w2pm-r78h-4m7v
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Product Laravel/framework
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 8.8

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

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

How to Fix CVE-2020-19316

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

laravel/framework fixed: 5.8.17 
Upgrade laravel/framework to 5.8.17
Verify Direct and Transitive Dependencies

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

inspect dependencies for laravel/framework

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-19316, inspect your project dependencies for Laravel/framework:

inspect dependencies for laravel/framework

Analyze the terminal output to locate any version of Laravel/framework in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.8.17), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

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 Laravel/framework, 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

OS Command injection vulnerability in function link in Filesystem.php in Laravel Framework before 5.8.17.

CVE-2020-19316 Affected Laravel/framework Versions

1 component(s)
Fixed Versions:
5.8.17
Product / Package Ecosystem Affected Versions Fixed Version
laravel/framework
 Packagist
< 5.8.17
5.8.17

References

NVD — CVE-2020-19316 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-19316
Security Fix Commit FIX COMMIT
https://github.com/laravel/framework/commit/44c3feb604944599ad1c782a9942981c3991fa31
Laravel/framework Source Repository REPOSITORY
https://github.com/laravel/framework
www.netbytesec.com/advisories/oscomman... WEB
http://www.netbytesec.com/advisories/OSCommandInjectionInLaravelFramework

Frequently Asked Questions

What is CVE-2020-19316?
CVE-2020-19316 is a security vulnerability in Laravel/framework involving OS Command Injection in Laravel Framework under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection').
Which Laravel/framework versions are affected?
Affected versions include releases prior to 5.8.17 across affected packages: laravel/framework.
What version fixes CVE-2020-19316?
Upgrading to 5.8.17 (or the latest patched release for your respective branch) resolves the vulnerability.
Is laravel/framework affected?
Yes, laravel/framework is affected in releases prior to 5.8.17. Upgrade your dependency to 5.8.17 or later.
What is the CVSS score of CVE-2020-19316?
CVE-2020-19316 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2020-19316?
CVE-2020-19316 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 Packagist dependencies for CVE-2020-19316?
Run the dependency tree command: 'inspect dependencies for laravel/framework'. 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-w2pm-r78h-4m7v",
  "modified" : "2022-01-05T17:39:12Z",
  "published" : "2022-01-06T23:13:42Z",
  "aliases" : [ "CVE-2020-19316" ],
  "summary" : "OS Command Injection in Laravel Framework",
  "details" : "OS Command injection vulnerability in function link in Filesystem.php in Laravel Framework before 5.8.17.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "laravel/framework"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "5.8.17"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-19316"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/laravel/framework/commit/44c3feb604944599ad1c782a9942981c3991fa31"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/laravel/framework"
  }, {
    "type" : "WEB",
    "url" : "http://www.netbytesec.com/advisories/OSCommandInjectionInLaravelFramework"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-78" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-01-05T17:39:12Z",
    "nvd_published_at" : "2021-12-20T20:15:00Z"
  }
}