CVE-2020-13868: Verbb/comments Comments Plugin Cross-Site Request Forgery Vulnerability

MODERATE
Advisory Identifier: GHSA-4r8c-pj7x-m5jx
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CVSS 6.5
CWE-352
Published
Advisory Summary

CVE-2020-13868 is a MODERATE (CVSS 6.5) comments plugin cross-site request forgery vulnerability (CWE-352: Cross-Site Request Forgery (CSRF)) affecting Verbb/comments libraries in the Packagist ecosystem. The issue involves comments plugin cross-site request forgery (csrf). Remediation is available by upgrading affected packages to version 1.5.5.

CVE-2020-13868 at a Glance

CVE Identifier CVE-2020-13868
GHSA Identifier GHSA-4r8c-pj7x-m5jx
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-352: Cross-Site Request Forgery (CSRF)
Affected Product Verbb/comments
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.5

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:N/I:H/A:N).

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 None (C:N)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2020-13868

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

verbb/comments fixed: 1.5.5 
Upgrade verbb/comments to 1.5.5
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 verbb/comments

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-13868, inspect your project dependencies for Verbb/comments:

inspect dependencies for verbb/comments

Analyze the terminal output to locate any version of Verbb/comments in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.5.5), 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-352: Cross-Site Request Forgery (CSRF), where the web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor. In Verbb/comments, 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

An issue was discovered in the Comments plugin before 1.5.5 for Craft CMS. CSRF affects comment integrity.

CVE-2020-13868 Affected Verbb/comments Versions

1 component(s)
Fixed Versions:
1.5.5
Product / Package Ecosystem Affected Versions Fixed Version
verbb/comments
 Packagist
< 1.5.5
1.5.5

References

NVD — CVE-2020-13868 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-13868
Verbb/comments Source Repository REPOSITORY
https://github.com/verbb/comments
Verbb/comments Source Repository REPOSITORY
https://github.com/verbb/comments/blob/craft-3/CHANGELOG.md#155---2020-05-28-critical

Frequently Asked Questions

What is CVE-2020-13868?
CVE-2020-13868 is a security vulnerability in Verbb/comments involving Comments plugin Cross-Site Request Forgery (CSRF) under CWE-352: Cross-Site Request Forgery (CSRF).
Which Verbb/comments versions are affected?
Affected versions include releases prior to 1.5.5 across affected packages: verbb/comments.
What version fixes CVE-2020-13868?
Upgrading to 1.5.5 (or the latest patched release for your respective branch) resolves the vulnerability.
Is verbb/comments affected?
Yes, verbb/comments is affected in releases prior to 1.5.5. Upgrade your dependency to 1.5.5 or later.
What is the CVSS score of CVE-2020-13868?
CVE-2020-13868 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.
What CWE is associated with CVE-2020-13868?
CVE-2020-13868 is classified under CWE-352: Cross-Site Request Forgery (CSRF) (The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.).
How can I check Packagist dependencies for CVE-2020-13868?
Run the dependency tree command: 'inspect dependencies for verbb/comments'. 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-4r8c-pj7x-m5jx",
  "modified" : "2024-04-24T18:00:52Z",
  "published" : "2022-05-24T17:19:26Z",
  "aliases" : [ "CVE-2020-13868" ],
  "summary" : "Comments plugin Cross-Site Request Forgery (CSRF)",
  "details" : "An issue was discovered in the Comments plugin before 1.5.5 for Craft CMS. CSRF affects comment integrity.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "verbb/comments"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.5.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-13868"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/verbb/comments"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/verbb/comments/blob/craft-3/CHANGELOG.md#155---2020-05-28-critical"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-352" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-24T18:00:52Z",
    "nvd_published_at" : "2020-06-05T19:15:00Z"
  }
}