Simple Banner <= 2.10.3 - Authenticated (Admin+) Stored Cross-Site Scripting

2021-07-26 00:00

Strategic Overview

Status

Patched in 2.10.4

Affected PluginSimple Banner – Easily add multiple Banners/Bars/Notifications/Announcements to the top or bottom of your website

Affected Version<= 2.10.3

CVSS5.5Medium

CVECVE-2021-24574

View all Simple Banner – Easily add multiple Banners/Bars/Notifications/Announcements to the top or bottom of your website vulnerabilities

Vulnerability Overview

The Simple Banner WordPress plugin before 2.10.4 does not sanitise and escape one of its settings, allowing high privilege users such as admin to use Cross-Site Scripting payload even when the unfiltered_html capability is disallowed.

Technical Analysis

REMEDIATION: Update to version 2.10.4, 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-2021-24574 https://www.wordfence.com/threat-intel/vulnerabilities/id/b890d168-9ea7-49c0-b628-71c76c0c2c9c

CVSS Vector

5.5

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

Base

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

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