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SQL Injection in Osclass

Advisory ID:HTB23287
Product:Osclass
Vendor:https://osclass.org/
Vulnerable Versions:3.5.9 and probably prior
Tested Version:3.5.9
Advisory Publication:December 21, 2015 [without technical details]
Vendor Notification:December 21, 2015
Vendor Fix:January 25, 2016
Public Disclosure:February 17, 2016
Latest Update:January 25, 2016
Vulnerability Type:SQL Injection [CWE-89]
CVE Reference:Pending
Risk Level:High
CVSSv3 Base Score:7.1 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L]
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Solution Status:Fixed by Vendor
Discovered and Provided:High-Tech Bridge Security Research Lab
 

Advisory Details:

High-Tech Bridge Security Research Lab discovered a high-risk SQL injection vulnerability in Osclass, a popular web-based software for building customized classifieds marketplace. The vulnerability can be exploited to gain access to potentially sensitive information in the application database and even to compromise the entire website.

The vulnerability exists due to insufficient filtration of user-supplied input data passed via the "itemsPerPage" HTTP GET parameter to "/index.php" PHP script. A remote unauthenticated attacker can modify the original SQL query and execute arbitrary SQL commands in application's database.

A simple PoC code below uses a time-based SQL injection technique to demonstrate existence of the vulnerability. The following HTTP request will make page rendering very slow, if MySQL server uses 5th version:

http://[host]/index.php?page=user&action=pub_profile&id=1&itemsPerPage=1%20P ROCEDURE%20analyse%28%28select%20extractvalue%28rand%28%29, concat%280x3a, %28IF%28MID%28version%28%29, 1, 1%29%20LIKE%205, %20BENCHMARK%285000000, SHA1%281%29%29, 1%29%29%29%29%29, 1%29


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Solution:
Update to Osclass 3.6.0

More Information:
https://blog.osclass.org/2016/01/25/osclass-3-6-0-ready-to-download/


References:
[1] High-Tech Bridge Advisory HTB23287 - https://www.immuniweb.com/advisory/HTB23287 - SQL Injection in Osclass
[2] Osclass - https://osclass.org/ - Osclass is a php script that allows you to quickly create and manage your own free classifieds site.
[3] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types.
[4] ImmuniWeb® - Leveraging the power of machine-learning and genius of human brain to deliver the most advanced web application security and penetration testing.
[5] ImmuniWeb® SSLScan - Test your servers for security and compliance with PCI DSS, HIPAA and NIST.
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