Instant CSS <= 1.2.1 - Cross-Site Request Forgery

2023-09-29 00:00

Nguyen Xuan Chien

Strategic Overview

Status

Patched in 1.2.2

Affected PluginInstant CSS

Affected Version<= 1.2.1

CVSS4.3Medium

CVECVE-2023-44243

View all Instant CSS vulnerabilities

Vulnerability Overview

The Instant CSS plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.2.1. This is due to missing or incorrect nonce validation on several functions called via AJAX actions in the class.instantcss_ajax.php file. This makes it possible for unauthenticated attackers to save and retrieve theme data, css data, minify data, and preprocessor data via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Technical Analysis

REMEDIATION: Update to version 1.2.2, 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-2023-44243 https://www.wordfence.com/threat-intel/vulnerabilities/id/30ce93b4-9e2a-4a8c-8590-ffd61d618d31

CVSS Vector

4.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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