CVE-2021-42136

REDCap 11.3.9 - Stored Cross Site Scripting

Severity Score

9.0

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A stored Cross-Site Scripting (XSS) vulnerability in the Missing Data Codes functionality of REDCap before 11.4.0 allows remote attackers to execute JavaScript code in the client's browser by storing said code as a Missing Data Code value. This can then be leveraged to execute a Cross-Site Request Forgery attack to escalate privileges to administrator.

Una vulnerabilidad de tipo Cross-Site Scripting (XSS) almacenada en la funcionalidad Missing Data Codes de REDCap versión 11.2.5, permite a atacantes remotos ejecutar código JavaScript en el navegador del cliente al almacenar dicho código como un valor de código de datos perdidos. Esto puede ser aprovechado para ejecutar un ataque de tipo Cross-Site Request Forgery para escalar privilegios a administrador

REDCap versions prior to 11.4.0 suffer from a persistent cross site scripting vulnerability that can be leveraged to escalate privileges.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

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

2021-10-11 CVE Reserved
2022-04-13 CVE Published
2022-04-19 First Exploit
2024-08-04 CVE Updated
2024-08-29 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

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

CAPEC

References (4)

URL	Tag	Source
https://redcap.med.usc.edu/_shib/assets/ChangeLog_Standard.pdf	Release Notes
https://www.project-redcap.org	Product

URL	Date	SRC
https://www.exploit-db.com/exploits/50877	2022-04-19
http://packetstormsecurity.com/files/166723/REDCap-Cross-Site-Scripting.html	2024-08-04

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
Vanderbilt Search vendor "Vanderbilt"		Redcap Search vendor "Vanderbilt" for product "Redcap"				< 11.4.0 Search vendor "Vanderbilt" for product "Redcap" and version " < 11.4.0"		-		Affected