CVE-2021-24884
"Formidable Form Builder WordPress HTML Injection and CSRF RCE"
Description
The Formidable Form Builder WordPress plugin before 4.09.05 allows to inject certain HTML Tags like <audio>,<video>,<img>,<a> and<button>.This could allow an unauthenticated, remote attacker to exploit a HTML-injection byinjecting a malicous link. The HTML-injection may trick authenticated users to follow the link. If the Link gets clicked, Javascript code can be executed. The vulnerability is due to insufficient sanitization of the "data-frmverify" tag for links in the web-based entry inspection page of affected systems. A successful exploitation incomibantion with CSRF could allow the attacker to perform arbitrary actions on an affected system with the privileges of the user. These actions include stealing the users account by changing their password or allowing attackers to submit their own code through an authenticated user resulting in Remote Code Execution. If an authenticated user who is able to edit Wordpress PHP Code in any kind, clicks the malicious link, PHP code can be edited.
INFO
Published Date :
Oct. 25, 2021, 2:15 p.m.
Last Modified :
Nov. 21, 2024, 5:53 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
6.0
Exploitability Score :
2.8
Public PoC/Exploit Available at Github
CVE-2021-24884 has a 3 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-24884.
| URL | Resource |
|---|---|
| https://github.com/S1lkys/XSS-in-Formidable-4.09.04/blob/main/XSS-in-Formidable-4.09.04.pdf | Exploit Third Party Advisory |
| https://github.com/Strategy11/formidable-forms/pull/335/files | Patch Third Party Advisory |
| https://wpscan.com/vulnerability/b57dacdd-43c2-48f8-ac1e-eb8306b22533 | Exploit Third Party Advisory |
| https://github.com/S1lkys/XSS-in-Formidable-4.09.04/blob/main/XSS-in-Formidable-4.09.04.pdf | Exploit Third Party Advisory |
| https://github.com/Strategy11/formidable-forms/pull/335/files | Patch Third Party Advisory |
| https://wpscan.com/vulnerability/b57dacdd-43c2-48f8-ac1e-eb8306b22533 | Exploit Third Party Advisory |
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).
None
None
If an authenticated user who is able to edit Wordpress PHP code in any kind, clicks a malicious link, PHP code can be edited through XSS in Formidable Forms 4.09.04.
xss exploit wordpress formidable
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-24884 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-24884 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 af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://github.com/S1lkys/XSS-in-Formidable-4.09.04/blob/main/XSS-in-Formidable-4.09.04.pdf Added Reference https://github.com/Strategy11/formidable-forms/pull/335/files Added Reference https://wpscan.com/vulnerability/b57dacdd-43c2-48f8-ac1e-eb8306b22533 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Reanalysis by [email protected]
Aug. 30, 2022
Action Type Old Value New Value Added CWE NIST CWE-352 -
Initial Analysis by [email protected]
Oct. 28, 2021
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H Changed Reference Type https://github.com/S1lkys/XSS-in-Formidable-4.09.04/blob/main/XSS-in-Formidable-4.09.04.pdf No Types Assigned https://github.com/S1lkys/XSS-in-Formidable-4.09.04/blob/main/XSS-in-Formidable-4.09.04.pdf Exploit, Third Party Advisory Changed Reference Type https://github.com/Strategy11/formidable-forms/pull/335/files No Types Assigned https://github.com/Strategy11/formidable-forms/pull/335/files Patch, Third Party Advisory Changed Reference Type https://wpscan.com/vulnerability/b57dacdd-43c2-48f8-ac1e-eb8306b22533 No Types Assigned https://wpscan.com/vulnerability/b57dacdd-43c2-48f8-ac1e-eb8306b22533 Exploit, Third Party Advisory Added CWE NIST CWE-79 Added CPE Configuration OR *cpe:2.3:a:strategy11:formidable_form_builder:*:*:*:*:*:wordpress:*:* versions up to (excluding) 4.09.05
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-24884 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-2021-24884
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
1.55 }} -2.92%
score
0.86817
percentile