W3 Total Cache <= 2.1.4 - Reflected Cross-Site Scripting via extension

2021-06-28 00:00

Anonymous

Strategic Overview

Status

Patched in 2.1.5

Affected PluginW3 Total Cache

Affected Version0.5 – 2.1.4

CVSS7.2High

CVECVE-2021-24452

View all W3 Total Cache vulnerabilities

Vulnerability Overview

The W3 Total Cache WordPress plugin before 2.1.5 was affected by a reflected Cross-Site Scripting (XSS) issue within the "extension" parameter in the Extensions dashboard, when the 'Anonymously track usage to improve product quality' setting is enabled, as the parameter is output in a JavaScript context without proper escaping. This could allow an attacker, who can convince an authenticated admin into clicking a link, to run malicious JavaScript within the user's web browser, which could lead to full site compromise.

Technical Analysis

REMEDIATION: Update to version 2.1.5, or a newer patched version --- IDENTIFIER: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

External References

https://www.cve.org/CVERecord?id=CVE-2021-24452 https://www.wordfence.com/threat-intel/vulnerabilities/id/f4d421df-310b-4a83-b521-c0d00045df52

CVSS Vector

7.2

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

Base

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

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