CVE-2021-24408

Prismatic < 2.8 - Contributor+ Stored XSS

Severity Score

5.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The Prismatic WordPress plugin before 2.8 does not sanitise or validate some of its shortcode parameters, allowing users with a role as low as Contributor to set Cross-Site payload in them. A post made by a contributor would still have to be approved by an admin to have the XSS trigger able in the frontend, however, higher privilege users, such as editor could exploit this without the need of approval, and even when the blog disallows the unfiltered_html capability.

El plugin Prismatic de WordPress versiones anteriores a 2.8, no sanea o comprueba algunos de sus parámetros shortcode, permitiendo a usuarios con un rol tan bajo como el de colaborador ajustar carga útil de tipo Cross-Site en ellos. Un post hecho por un colaborador todavía tendría que ser aprobado por un administrador para que el ataque XSS se desencadene en el frontend, sin embargo, los usuarios con mayores privilegios, como el editor podrían explotar esto sin necesidad de aprobación, e incluso cuando el blog deshabilita la capacidad unfiltered_html

*Credits: apple502j

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-01-14 CVE Reserved
2021-06-21 CVE Published
2023-03-08 EPSS Updated
2024-08-03 CVE Updated
2024-08-03 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC
https://wpscan.com/vulnerability/51855853-e7bd-425f-802c-824209f4f84d	2024-08-03

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
Plugin-planet Search vendor "Plugin-planet"		Prismatic Search vendor "Plugin-planet" for product "Prismatic"				< 2.8 Search vendor "Plugin-planet" for product "Prismatic" and version " < 2.8"		wordpress		Affected