CVE-2021-4244: Yikesinc/yikes inc easy mailchimp extender Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-837v-6vgx-jqcc
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CVSS 6.1
CWE-79
Published
Advisory Summary

CVE-2021-4244 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Yikesinc/yikes inc easy mailchimp extender libraries in the Packagist ecosystem. The issue involves yikes-inc-easy-mailchimp-extender cross-site scripting vulnerability. Remediation is available by upgrading affected packages to version 6.8.6.

CVE-2021-4244 at a Glance

CVE Identifier CVE-2021-4244
GHSA Identifier GHSA-837v-6vgx-jqcc
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Yikesinc/yikes inc easy mailchimp extender
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.1

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:C/C:L/I:L/A:N).

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

How to Fix CVE-2021-4244

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

yikesinc/yikes-inc-easy-mailchimp-extender fixed: 6.8.6 
Upgrade yikesinc/yikes-inc-easy-mailchimp-extender to 6.8.6
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 yikesinc/yikes-inc-easy-mailchimp-extender

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-4244, inspect your project dependencies for Yikesinc/yikes inc easy mailchimp extender:

inspect dependencies for yikesinc/yikes-inc-easy-mailchimp-extender

Analyze the terminal output to locate any version of Yikesinc/yikes inc easy mailchimp extender in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 6.8.6), 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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Yikesinc/yikes inc easy mailchimp extender, 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

A vulnerability classified as problematic has been found in yikes-inc-easy-mailchimp-extender Plugin up to 6.8.5. This affects an unknown part of the file admin/partials/ajax/add_field_to_form.php. The manipulation of the argument field_name/merge_tag/field_type/list_id leads to cross site scripting. It is possible to initiate the attack remotely. Upgrading to version 6.8.6 can address this issue. The name of the patch is 3662c6593aa1bb4286781214891d26de2e947695. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-215307.

CVE-2021-4244 Affected Yikesinc/yikes inc easy mailchimp extender Versions

1 component(s)
Fixed Versions:
6.8.6
Product / Package Ecosystem Affected Versions Fixed Version
yikesinc/yikes-inc-easy-mailchimp-extender
 Packagist
< 6.8.6
6.8.6

References

NVD — CVE-2021-4244 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-4244
Yikesinc/yikes inc easy mailchimp extender Source Repository REPOSITORY
https://github.com/EvanHerman/yikes-inc-easy-mailchimp-extender/pull/889
Security Fix Commit FIX COMMIT
https://github.com/EvanHerman/yikes-inc-easy-mailchimp-extender/commit/3662c6593aa1bb4286781214891d26de2e947695
Yikesinc/yikes inc easy mailchimp extender Release RELEASE
https://github.com/EvanHerman/yikes-inc-easy-mailchimp-extender/releases/tag/6.8.6
Yikesinc/yikes inc easy mailchimp extender Source Repository REPOSITORY
https://github.com/yikesinc/yikes-inc-easy-mailchimp-extender
vuldb.com/ WEB
https://vuldb.com/?id.215307

Frequently Asked Questions

What is CVE-2021-4244?
CVE-2021-4244 is a security vulnerability in Yikesinc/yikes inc easy mailchimp extender involving yikes-inc-easy-mailchimp-extender Cross-site Scripting vulnerability under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Yikesinc/yikes inc easy mailchimp extender versions are affected?
Affected versions include releases prior to 6.8.6 across affected packages: yikesinc/yikes-inc-easy-mailchimp-extender.
What version fixes CVE-2021-4244?
Upgrading to 6.8.6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is yikesinc/yikes-inc-easy-mailchimp-extender affected?
Yes, yikesinc/yikes-inc-easy-mailchimp-extender is affected in releases prior to 6.8.6. Upgrade your dependency to 6.8.6 or later.
What is the CVSS score of CVE-2021-4244?
CVE-2021-4244 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2021-4244?
CVE-2021-4244 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Packagist dependencies for CVE-2021-4244?
Run the dependency tree command: 'inspect dependencies for yikesinc/yikes-inc-easy-mailchimp-extender'. 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-837v-6vgx-jqcc",
  "modified" : "2022-12-15T23:36:08Z",
  "published" : "2022-12-12T15:30:31Z",
  "aliases" : [ "CVE-2021-4244" ],
  "summary" : "yikes-inc-easy-mailchimp-extender Cross-site Scripting vulnerability",
  "details" : "A vulnerability classified as problematic has been found in yikes-inc-easy-mailchimp-extender Plugin up to 6.8.5. This affects an unknown part of the file admin/partials/ajax/add_field_to_form.php. The manipulation of the argument field_name/merge_tag/field_type/list_id leads to cross site scripting. It is possible to initiate the attack remotely. Upgrading to version 6.8.6 can address this issue. The name of the patch is 3662c6593aa1bb4286781214891d26de2e947695. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-215307.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
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    },
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      "type" : "ECOSYSTEM",
      "events" : [ {
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        "fixed" : "6.8.6"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-4244"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/EvanHerman/yikes-inc-easy-mailchimp-extender/pull/889"
  }, {
    "type" : "WEB",
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    "url" : "https://github.com/yikesinc/yikes-inc-easy-mailchimp-extender"
  }, {
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    "url" : "https://vuldb.com/?id.215307"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-12-15T23:36:08Z",
    "nvd_published_at" : "2022-12-12T14:15:00Z"
  }
}