Description

The Advanced Popups plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.1.1. This is due to missing or incorrect nonce validation on the metabox_popup_save() function. This makes it possible for unauthenticated attackers to save meta tags via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

INFO

Published Date :

July 12, 2023, 7:15 a.m.

Last Modified :

Nov. 7, 2023, 3:40 a.m.

Remotely Exploitable :

Yes !

Impact Score :

1.4

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2021-4421 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Ashstonestudios advanced_popups

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-4421 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-4421 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Removed CWE Wordfence CWE-352
  • Initial Analysis by [email protected]

    Jul. 19, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
    Changed Reference Type https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/ No Types Assigned https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/ Third Party Advisory
    Changed Reference Type https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/ No Types Assigned https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/ Third Party Advisory
    Changed Reference Type https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/ No Types Assigned https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/ Third Party Advisory
    Changed Reference Type https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/ No Types Assigned https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/ Third Party Advisory
    Changed Reference Type https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/ No Types Assigned https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/ Third Party Advisory
    Changed Reference Type https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/ No Types Assigned https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/ Third Party Advisory
    Changed Reference Type https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/ No Types Assigned https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/ Third Party Advisory
    Changed Reference Type https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2548724%40advanced-popups&new=2548724%40advanced-popups&sfp_email=&sfph_mail= No Types Assigned https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2548724%40advanced-popups&new=2548724%40advanced-popups&sfp_email=&sfph_mail= Patch
    Changed Reference Type https://www.wordfence.com/threat-intel/vulnerabilities/id/dc7b51e5-6eb7-41ba-add3-f083fb34c5e1?source=cve No Types Assigned https://www.wordfence.com/threat-intel/vulnerabilities/id/dc7b51e5-6eb7-41ba-add3-f083fb34c5e1?source=cve Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:ashstonestudios:advanced_popups:*:*:*:*:*:wordpress:*:* versions up to (including) 1.1.1
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-4421 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-4421 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.16 }} 0.02%

score

0.52360

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability