Document Title: =============== Imagam iFiles v1.16.0 iOS - Multiple Web Vulnerabilities References (Source): ==================== http://www.vulnerability-lab.com/get_content.php?id=1160 Release Date: ============= 2013-12-03 Vulnerability Laboratory ID (VL-ID): ==================================== 1160 Common Vulnerability Scoring System: ==================================== 8.9 Product & Service Introduction: =============================== iFiles is the most intuitive file manager for iOS with features like connectivity to many file cloud services, transferring files between computer or cloud services, ability to view many file formats (PDF viewer now supports annotations, search and more), voice recorder, web downloader, text file editor and more. Supported Online Cloud Services and Protocols: Dropbox, Google Drive, iCloud, Box.net, SkyDrive, SugarSync, AFP (Mac Shares), FTP/FTPS, SFTP, Flickr, Picasa, Facebook, Rackspace CloudFiles, CloudApp, PogoPlug, WebDav, Amazon S3, Ubuntu One Files, ownCloud, 4Shared, also using Amazon S3: DreamObjects and UltiCloud. ( Copy of the Homepage: https://itunes.apple.com/de/app/ifiles/id336683524 & http://imagam.com ) Abstract Advisory Information: ============================== The Vulnerability Laboratory Research Team discovered multiple vulnerabilities in the official Imagam iFiles v1.16.0 mobile application for apple iOS. Vulnerability Disclosure Timeline: ================================== 2013-12-03: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Affected Product(s): ==================== Imagam Product: iFiles - Mobile Application iOS 1.16.0 Exploitation Technique: ======================= Remote Severity Level: =============== Critical Technical Details & Description: ================================ 1.1 A file include- & arbitrary file upload web vulnerability has been discovered in the official Imagam iFiles v1.16.0 mobile application for apple iOS. An arbitrary file upload issue allows a remote attacker to upload files with multiple extensions to bypass the validation for unauthorized access. A file include web vulnerability allows a remote attacker to unauthorized include local web-server file requests or external file requests. The vulnerability is located in the vulnerable file- and folder-name value. Remote attackers can include local file requests combined with script code to successful exploit the issue. To include to the vulnerable foldername value it is required to manipulate the `create folder` (add) input (POST Method). The secound possibility to inject is the vulnerable filename value of the misconfigured (POST Method) upload module. After the include the remote attacker can access the included file by requesting the regular index or sub category folder (web interface) site. The arbitrary file upload vulnerability is located in the vulnerable filename value of the upload module. Attackers are also able to upload a php or js web-shells by renaming the file with multiple extensions. The attacker uploads for example a web-shell with the following name and extension test.jpg.html.js.php.gif.jpg . After the upload the attacker opens the file in the web application to delete the .gif.jpg file extension to access the resource with elevated execution access rights. Exploitation of the file include & arbitrary file upload web vulnerability requires no user interaction or privilege application user account with password. Successful exploitation of the vulnerability results in unauthorized file access because of a compromise after the upload of web-shells. Request Method(s): [+] [POST] Vulnerable Module(s): [+] File Upload Vulnerable Parameter(s): [+] filename (value) - (multiple extensions) [+] foldername Affected Module(s): [+] File & Folder Dir Listing (http://localhost:8080) 1.2 2 local command/path injection web vulnerabilities has been discovered in the official Imagam iFiles v1.16.0 mobile application for apple iOS. The remote web vulnerability allows to inject local commands via vulnerable system values to compromise the apple mobile iOS application. The vulnerability is located in the in the device name value of the file dir und sub category listing module. Local attackers are able to inject own malicious system specific commands or path values requests as the iOS device name. The execute of the injected script code occurs in two different section with persistent attack vector. The first section is the wifi app web-interface index file/folder dir listing. The secound execute occurs in the file/folder sub category listing. The security risk of the local command/path inject vulnerability is estimated as high(-) with a cvss (common vulnerability scoring system) count of 6.2(+)|(-)6.3. Exploitation of the command/path inject vulnerability requires a low privileged iOS device account with restricted access and no user interaction. Successful exploitation of the vulnerability results in unauthorized execute of system specific commands or unauthorized path requests. Request Method(s): [+] POST to GET Vulnerable Parameter(s): [+] devicename Affected Module(s): [+] Index- File Dir Listing [+] Sub Folder/Category - File Dir Listing Proof of Concept (PoC): ======================= 1.1 The file include and arbitrary file upload web vulnerability can be exploited by remote attackers without privileged web application user account and also without user interaction. For security demonstration or to reproduce the vulnerability follow the provided information and steps below. PoC: foldername
PoC: filename (value) * Mon, 02 Dec 2013 15:50:10 GMT -- x * >"<[FILE INCLUDE WEB VULNERABILITY!]="_device%20folder&path-issue-2_files/a.htm" <="" a=""> 1.2 The local command inject web vulnerability can be exploited by remote attackers with low privileged or restricted iOS device user account and no user interaction. For security demonstration or to reproduce the vulnerability follow the provided information and steps below. PoC: devicename
Solution - Fix & Patch: ======================= 1.1 The file include vulnerability and arbitrary file upload vulnerability can be patched by a secure parse and encode of the vulnerable filename and foldername values. Encode also the vulnerable path sub category file dir listing and the index file dir listing. Recognize the path value. 1.2 To patch the local command inject web vulnerability it is required to encode the deviename value in the index and sub category sites to prevent injects or requests. Security Risk: ============== 1.1 The security risk of the file include and arbitrary file upload (restricted upload bypass) web vulnerability is estimated as critical. 1.2 The security risk of the local command/path inject web vulnerability is estimated as high(-). 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. Domains: www.vulnerability-lab.com - www.vuln-lab.com - www.evolution-sec.com Contact: admin@vulnerability-lab.com - research@vulnerability-lab.com - admin@evolution-sec.com Section: www.vulnerability-lab.com/dev - forum.vulnerability-db.com - magazine.vulnerability-db.com Social: twitter.com/#!/vuln_lab - facebook.com/VulnerabilityLab - youtube.com/user/vulnerability0lab Feeds: vulnerability-lab.com/rss/rss.php - vulnerability-lab.com/rss/rss_upcoming.php - vulnerability-lab.com/rss/rss_news.php Any modified copy or reproduction, including partially usages, of this file requires authorization from Vulnerability Laboratory. Permission to electronically redistribute this alert in its unmodified form is granted. All other rights, including the use of other media, are reserved by Vulnerability-Lab Research Team or its suppliers. All pictures, texts, advisories, source code, videos and other information on this website is trademark of vulnerability-lab team & the specific authors or managers. To record, list (feed), modify, use or edit our material contact (admin@vulnerability-lab.com or research@vulnerability-lab.com) to get a permission. Copyright © 2013 | Vulnerability Laboratory [Evolution Security] -- VULNERABILITY LABORATORY RESEARCH TEAM DOMAIN: www.vulnerability-lab.com CONTACT: research@vulnerability-lab.com