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

2021-06-22 00:00

Dennis Brinkrolf (sonarsource)

Strategic Overview

Status

Patched in 5.28.1

Affected PluginCiviCRM for WordPress

Affected Version<= 5.28.0

CVSS6.1Medium

CVECVE-2020-36389

View all CiviCRM for WordPress vulnerabilities

Vulnerability Overview

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.

Technical Analysis

REMEDIATION: Update to version 5.28.1, or a newer patched version --- IDENTIFIER: CWE-352 (Cross-Site Request Forgery (CSRF)) The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.

External References

https://www.cve.org/CVERecord?id=CVE-2020-36389 https://www.wordfence.com/threat-intel/vulnerabilities/id/82fe99af-f254-4f4f-ac27-3e1997c370f6

CVSS Vector

6.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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