CVE-2020-36389

CiviCRM < 5.28.1 - Cross-Site Request Forgery to Cross-Site Scripting

Severity Score

4.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In CiviCRM before 5.28.1 and CiviCRM ESR before 5.27.5 ESR, the CKEditor configuration form allows CSRF.

En CiviCRM versiones anteriores a 5.28.1 y CiviCRM ESR versiones anteriores a 5.27.5 ESR, el formulario de configuración del CKEditor permite ataques de tipo CSRF

The CiviCRM plugin for WordPress is vulnerable to Stored Cross-Site Scripting via improper CSRF checks in the CKEditor Configuration Form in versions up to, and including, 5.28.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

*Credits: Dennis Brinkrolf (sonarsource)

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-06-17 CVE Reserved
2021-06-17 CVE Published
2024-01-22 EPSS Updated
2024-08-04 CVE Updated
2024-08-04 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

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

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC
https://blog.sonarsource.com/civicrm-code-execution-vulnerability-chain-explained	2024-08-04

URL	Date	SRC

URL	Date	SRC
https://civicrm.org/advisory/civi-sa-2020-11-csrf-ckeditor-configuration-form	2023-02-03

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Civicrm Search vendor "Civicrm"		Civicrm Search vendor "Civicrm" for product "Civicrm"				< 5.27.5 Search vendor "Civicrm" for product "Civicrm" and version " < 5.27.5"		extended_security_release		Affected
Civicrm Search vendor "Civicrm"		Civicrm Search vendor "Civicrm" for product "Civicrm"				< 5.28.1 Search vendor "Civicrm" for product "Civicrm" and version " < 5.28.1"		-		Affected