CVE-2021-24159

Contact Form 7 Style <= 3.1.9 - Cross-Site Request Forgery to Stored Cross-Site Scripting

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Due to the lack of sanitization and lack of nonce protection on the custom CSS feature, an attacker could craft a request to inject malicious JavaScript on a site using the Contact Form 7 Style WordPress plugin through 3.1.9. If an attacker successfully tricked a site’s administrator into clicking a link or attachment, then the request could be sent and the CSS settings would be successfully updated to include malicious JavaScript.

Debido a la falta de saneamiento y una falta de protección nonce en la funcionalidad CSS personalizada, un atacante podría diseñar una petición para inyectar JavaScript malicioso en un sitio usando el plugin de WordPress Contact Form 7 Style versiones hasta 3.1.9. Si un atacante engañaba con éxito al administrador de un sitio para que hiciera clic en un enlace o archivo adjunto, la petición podría ser enviada y la configuración de CSS se actualizaría con éxito para incluir JavaScript malicioso

*Credits: Chloe Chamberland

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-01-14 CVE Reserved
2021-02-04 CVE Published
2023-12-20 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-352: Cross-Site Request Forgery (CSRF)

CAPEC

References (2)

URL	Tag	Source
https://wpscan.com/vulnerability/363182f1-9fda-4363-8f6a-be37c4c07aa9	Third Party Advisory
https://www.wordfence.com/blog/2021/02/unpatched-vulnerability-50000-wp-sites-must-find-alternative-for-contact-form-7-style	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Rocklobster Search vendor "Rocklobster"		Contact Form 7 Search vendor "Rocklobster" for product "Contact Form 7"				<= 3.1.9 Search vendor "Rocklobster" for product "Contact Form 7" and version " <= 3.1.9"		wordpress		Affected