WordPress Core < 5.4.1 - Authenticated Cross-Site Scripting via Customizer

2020-04-29 00:00

Evan Ricafort

Strategic Overview

Status

Patched in 3.7.33

Affected CoreWordPress 5.4

Affected Version3.7 – 5.4 · 19 branches

CVSS5.8Medium

CVECVE-2020-11025

View all WordPress 5.4 vulnerabilities

Vulnerability Overview

In affected versions of WordPress, a cross-site scripting (XSS) vulnerability in the navigation section of Customizer allows JavaScript code to be executed. Exploitation requires an authenticated user. This has been patched in version 5.4.1, along with all the previously affected versions via a minor release (5.3.3, 5.2.6, 5.1.5, 5.0.9, 4.9.14, 4.8.13, 4.7.17, 4.6.18, 4.5.21, 4.4.22, 4.3.23, 4.2.27, 4.1.30, 4.0.30, 3.9.31, 3.8.33, 3.7.33).

Technical Analysis

REMEDIATION: Update to one of the following versions, or a newer patched version: 3.7.33, 3.8.33, 3.9.31, 4.0.30, 4.1.30, 4.2.27, 4.3.23, 4.4.22, 4.5.21, 4.6.18, 4.7.17, 4.8.13, 4.9.14, 5.0.9, 5.1.5, 5.2.6, 5.3.3, 5.4.1 --- 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-2020-11025 https://www.wordfence.com/threat-intel/vulnerabilities/id/adf3fb57-b080-4cda-b78b-14d94bad21a9

CVSS Vector

5.8

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

Base

Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredLow
User InteractionRequired
ScopeChanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone

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