REMLAB Web Mech Designer 2.0.5 Path Disclosure Vulnerability

["Jesper Jurcenoks" <jesper.jurcenoks () netvigilance com>]

Description:
REMLAB <http://remlab.sourceforge.net/>  is a fully fuctional
cross-platform web-based Battlemech designer for the tactical board game
Battletech <http://www.classicbattletech.com/> . REMLAB  is built
entirely on HTML, PHP, and JavaScript with AJAX functionality. The
vulnerability exists in calculate.php script which allows remote
attackers to obtain sensitive information via an HTTP request to
calculate.php that contains wrong value in Tonnage parameter. This
causes the information to be leaked in an error message.

External References: 
Mitre CVE: CVE-2006-5896
<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5896>  
NVD NIST: CVE-2006-5896
<http://nvd.nist.gov/nvd.cfm?cvename=CVE-2006-5896> 
OSVDB: 30264 <http://www.osvdb.com/displayvuln.php?osvdb_id=30264>  

Summary: 
REMLAB is a fully fuctional cross-platform web-based Battlemech designer
for the tactical board game Battletech. 

A security problem in the product allows attackers to gather the true
path of the server-side script. 

Release Date:
November 27 2006

Severity:
Risk: Low
 
CVSS Metrics
Access Vector: Remote
Access Complexity: Low
Authentication: not-required
Confidentiality Impact: Partial
Integrity Impact: None
Availability Impact: None
Impact Bias: Normal
CVSS Base Score: 2.3
 
Target Distribution on Internet: Low
 
Exploitability: Functional Exploit
Remediation Level: Workaround
Report Confidence: Uncorroborated
 
Vulnerability Impact: Attack
Host Impact: Path disclosure.


SecureScout Testcase ID:
TC 17937

Vulnerable Systems:
REMLAB Web Mech Designer 2.0.5
<http://sourceforge.net/project/showfiles.php?group_id=165798> 

Vulnerability Type:
Input Validation error - The calculate.php script has a flaw which leads
to a Warning. This is an input validation fault when the script is not
testing the data passed.

Vendor Status: 
The Vendor has been contacted on November 14th 2006, by email and
phone,. Vendor has not responded.
There is no official patch at this time.

Workaround:
Disable warning messages: modify in the php.ini file the following line:
display_errors = Off .

Example: 
HTTP REQUEST
http://[TARGET]/[REMLAB-directory]/include/calculate.php?Tonnage=%60 

REPLY
...
<b>Warning</b>:  Division by zero in <b
D:\WWWRoot\<username>\calculate.php</b> on line <b>438</b><br />

,,0.00,,1,,2,,12,,12,,8,,8,,2,,2,,10,,0.0,,0.0
... 

URL of Original Advisory: http://www.netvigilance.com/advisory0007 


Credits: 
Jesper Jurcenoks
Co-founder netVigilance, Inc
www.netvigilance.com <http://www.netvigilance.com/> 


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