USM Premium <= 16.2 - Authenticated(Administrator+) Stored Cross-Site Scripting

2023-06-05 00:00

Mohamed Selim

Strategic Overview

Status

Patched in 16.3

Affected PluginUSM Premium

Affected Version<= 16.2

CVSS4.4Medium

CVECVE-2023-1166

View all USM Premium vulnerabilities

Vulnerability Overview

The USM Premium plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in versions up to, and including, 16.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Technical Analysis

REMEDIATION: Update to version 16.3, 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-2023-1166 https://www.wordfence.com/threat-intel/vulnerabilities/id/631fc709-98e8-4655-96fc-c37717705a80

CVSS Vector

4.4

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

Base

Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredHigh
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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