WPBakery Page Builder Clipboard <= 4.5.5 - Stored Cross-Site Scripting

2021-04-03 00:00

Charles Strader Sweethill

Strategic Overview

Status

Patched in 4.5.6

Affected PluginWPBakery Page Builder Clipboard

Affected Version< 4.5.6

CVSS6.4Medium

CVECVE-2021-24243

View all WPBakery Page Builder Clipboard vulnerabilities

Vulnerability Overview

An AJAX action registered by the WPBakery Page Builder (Visual Composer) Clipboard WordPress plugin before 4.5.6 did not have capability checks nor sanitization, allowing low privilege users (subscriber+) to call it and set XSS payloads, which will be triggered in all backend pages.

Technical Analysis

REMEDIATION: Update to version 4.5.6, 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-2021-24243 https://www.wordfence.com/threat-intel/vulnerabilities/id/2dae6b53-11f3-432c-ad27-940c429055a2

CVSS Vector

6.4

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

Base

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

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