Document Title:
===============
Freeside SelfService CGI|API 2.3.3 - Multiple Vulnerabilities
References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=614
Release Date:
=============
2012-06-13
Vulnerability Laboratory ID (VL-ID):
====================================
614
Common Vulnerability Scoring System:
====================================
6.5
Product & Service Introduction:
===============================
Billing, ticketing, reporting and configuration for employees and resellers The majority of Freeside s
functionality is accessed from here. The back office interface includes searching and viewing of customers,
invoices, trouble tickets and services, as well as reporting, configuration, per-user access control,
resellser virtualization and more.
(Copy of the Vendor Homepage: http://freeside.biz/freeside )
Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research Team discovered multiple web vulnerabilities in Freesides SelfService CGI|API v2.3.3 git.
Vulnerability Disclosure Timeline:
==================================
2012-06-14: Public or Non-Public Disclosure
Discovery Status:
=================
Published
Affected Product(s):
====================
Freeside
Product: SelfService CGI|API 2.3.3
Exploitation Technique:
=======================
Remote
Severity Level:
===============
Medium
Technical Details & Description:
================================
1.1
Multiple SQL Injection vulnerabilities are detected in Freesides SelfService CGI|API v2.3.3.
The vulnerability allows an attacker (remote) or local low privileged user account to inject/execute own
sql commands on the affected application dbms without user inter action. The vulnerability is located in the
selfservice.cgi and the bound parameters action & svcnum. Successful exploitation of the vulnerability
results in dbms & application compromise.
Vulnerable Module(s):
[+] View my usage - Service usage details
Vulnerable File(s):
[+] selfservice.cgi
Vulnerable File(s):
[+] svcnum
[+] action
1.2
Multiple persistent input validation vulnerabilities are detected in Freesides SelfService CGI|API v2.3.3.
The bugs allow remote attackers to implement/inject malicious script code on the application-side (persistent).
The persistent vulnerabilities are located in the cust_main.cgi, part_pkg.cgi, part_event.html or part_device.html
with the bound parameters company address, package comment, event- & device name. Exploitation requires low user
inter action & privileged application user account. Successful exploitation of the vulnerability can lead to
session hijacking (admin) or stable (persistent) context manipulation.
Vulnerable Files(s):
[+] ../edit/cust_main.cgi?426
[+] ../edit/part_pkg.cgi?4
[+] ../browse/part_event.html
[+] ../browse/part_device.html
Vulnerable Module(s):
[+] [Company] [Address]
[+] [Package] [Comment]
[+] [Event Name]
[+] [Device Name]
1.3
Multiple non persistent cross site scripting vulnerabilities are detected in Freesides SelfService CGI|API v2.3.3.
The vulnerability allows remote attackers to hijack website customer, moderator or admin sessions with high required
user inter action or local low privileged user account. The vulnerabilities are located in the selfservice.cgi file
with the vulnerable bound parameters pkg, pkgnum, beginning & end. Successful exploitation can result in account steal,
phishing & client-side content request manipulation.
Vulnerable Module(s):
[+] Change User Details
[+] Change Package
Vulnerable File(s):
[+] selfservice.cgi
Vulnerable Parameter(s):
[+] pkg & pkgnum
[+] end & beginning
Proof of Concept (PoC):
=======================
1.1
The sql injection vulnerability can be exploited by remote attackers without privileged user account or user inter action.
For demonstration or reproduce ...
PoC:
../selfserv/selfservice.cgi?session=8cd42b35567e5bdce44bf17779b6431e;action=view_usage_details;svcnum=-1'[SQL-INJECTION];beginning=0;ending=0
../selfserv/selfservice.cgi?session=8cd42b35567e5bdce44bf17779b6431e;action=view_usage_details[SQL-INJECTION];svcnum=X;beginning=0;ending=0
> "SELECT * FROM svc_acct WHERE svcnum = ?": LINE 1: SELECT * FROM svc_acct WHERE svcnum = $1
Note: First get a alive session, exchange it with the expired of the poc and then try to access the url to inject your sql commands.
1.2
The persistent input validation vulnerabilities can be exploited by remote attackers with low required user inter action.
For demonstration or reproduce ...
Example:
The attacker create/edit an account and inject a malicious script code i.e.,
in the vulnerable fields which are Company and Address. This bug is very dangerous because once the admin enters the admin area
he will see the page of users. The code that we injected will be executed out of the main page context of the admin.
Review: Payname
Illegal (name) (error code illegal_name) payname:
">