CVE-2021-24905: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-mjq7-mv4f-72x7
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CVSS 8.0
CWE-284 CWE-863 CWE-352
Published
Advisory Summary

CVE-2021-24905 is a HIGH (CVSS 8.0) security vulnerability vulnerability (CWE-284: Improper Access Control) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.. Remediation is available in the latest vendor maintenance releases.

CVE-2021-24905 at a Glance

CVE Identifier CVE-2021-24905
GHSA Identifier GHSA-mjq7-mv4f-72x7
Severity HIGH
CVSS v3.1 Base Score 8.0
CWE Classification CWE-284: Improper Access Control
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.0

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
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-2021-24905

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

Verify Direct and Transitive Dependencies

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

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2021-24905, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software 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 mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-284: Improper Access Control, where the product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. In Software, 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

The Advanced Contact form 7 DB WordPress plugin before 1.8.7 does not have authorisation nor CSRF checks in the acf7_db_edit_scr_file_delete AJAX action, and does not validate the file to be deleted, allowing any authenticated user to delete arbitrary files on the web server. For example, removing the wp-config.php allows attackers to trigger WordPress setup again, gain administrator privileges and execute arbitrary code or display arbitrary content to the users.

References

NVD — CVE-2021-24905 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-24905
wpscan.com/vulnerability/cf022... WEB
https://wpscan.com/vulnerability/cf022415-6614-4b95-913b-802186766ae6

Frequently Asked Questions

What is CVE-2021-24905?
CVE-2021-24905 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-284: Improper Access Control.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2021-24905?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2021-24905?
CVE-2021-24905 has a CVSS v3.1 base score of 8.0 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2021-24905?
CVE-2021-24905 is classified under CWE-284: Improper Access Control (The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.).
How can I check Maven dependencies for CVE-2021-24905?
Run the dependency tree command: 'mvn dependency:tree'. 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-mjq7-mv4f-72x7",
  "modified" : "2022-03-29T00:01:26Z",
  "published" : "2022-03-22T00:00:41Z",
  "aliases" : [ "CVE-2021-24905" ],
  "details" : "The Advanced Contact form 7 DB WordPress plugin before 1.8.7 does not have authorisation nor CSRF checks in the acf7_db_edit_scr_file_delete AJAX action, and does not validate the file to be deleted, allowing any authenticated user to delete arbitrary files on the web server. For example, removing the wp-config.php allows attackers to trigger WordPress setup again, gain administrator privileges and execute arbitrary code or display arbitrary content to the users.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-24905"
  }, {
    "type" : "WEB",
    "url" : "https://wpscan.com/vulnerability/cf022415-6614-4b95-913b-802186766ae6"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-284", "CWE-352", "CWE-863" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2022-03-21T19:15:00Z"
  }
}