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Document Title:
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===============
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Photo Manager Pro 4.4.0 iOS - Code Execution Vulnerability
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References (Source):
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====================
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http://www.vulnerability-lab.com/get_content.php?id=1444
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Release Date:
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=============
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2015-03-10
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Vulnerability Laboratory ID (VL-ID):
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====================================
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1444
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Common Vulnerability Scoring System:
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====================================
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8.6
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Product & Service Introduction:
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===============================
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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?
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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
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and device over wifi network. HTTP Transfer: Transfer files between computer and device over wifi network. View photos in the browser. Peer to Peer
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Transfer: Directly transfer files between iPad, iPhone and iPod Touch over wifi network. USB Transfer: Import/Export photos from/to iTunes file sharing.
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Basic Transfer: Import/Export photos from/to the Photos app.
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(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 )
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Abstract Advisory Information:
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==============================
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The Vulnerability Laboratory Research Team discovered a code execution vulnerability in the official Linkus Photo Manager Pro v4.4.0 iOS mobile web-application.
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Vulnerability Disclosure Timeline:
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==================================
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2015-03-10: Public Disclosure (Vulnerability Laboratory)
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Discovery Status:
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=================
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Published
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Affected Product(s):
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====================
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Linkus
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Product: Photo Manager Pro - iOS Mobile Web Application (Wifi) 4.4.0
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Exploitation Technique:
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=======================
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Remote
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Severity Level:
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===============
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Critical
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Technical Details & Description:
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================================
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An arbitrary code execution vulnerability has been discovered in the official Linkus Photo Manager Pro v4.4.0 iOS mobile web-application.
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The vulnerability allows remote attackers to execute malicious codes on the application-side of the vulnerable app to compromise the
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target mobile device.
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The vulnerability is located in the `folderName` value of the `newfolder.action` module. Remote attackers are able to manipulate the
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`folderName` value in the `index.html#?w=300` file POST method request to compromise the application, user session information or connected
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device components. The attacker tampers the new Folder POST method request to exchange the regular folderName value with special crafted code.
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The input context is becomes visible at the main index service or subfolder (path). The vector of the vulnerability is located on the application-side.
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The security risk of the arbitrary code execution vulnerability is estimated as high with a cvss (common vulnerability scoring system) count of 8.6.
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Exploitation of the arbitrary code execution vulnerability requires no user interaction or privileged web-application user account with password.
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Successful exploitation of the vulnerability results in session hijacking, persistent phishing, persistent external redirects and persistent
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manipulation function or connected module context.
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Request Method(s):
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[+] [POST]
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Vulnerable Module(s):
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[+] newfolder.action
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Vulnerable Parameter(s):
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[+] folderName
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Affected Module(s):
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[+] Index (http://localhost:8080)
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[+] Sub Category Path
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Proof of Concept (PoC):
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=======================
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The code execution vulnerability can be exploited by remote attackers without privileged application user account or user interaction.
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For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.
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PoC: Create Folder
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<div id="main"><div id="breadcrumb">Home</div>
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<div id="content"><ul id="folders_ul"><li><div class="folder_item_bg"><img src="images/blank.gif" class="blank"><a href="browse_folder.html?folderID=1"><img src="images/blank_thumbnail.png" height="86" width="80"></a></div><div class="folder_label"><a href="browse_folder.html?folderID=1">Family</a></div></li><li><div class="folder_item_bg"><img src="images/blank.gif" class="blank"><a href="browse_folder.html?folderID=2"><img src="images/blank_thumbnail.png" height="86" width="80"></a></div><div class="folder_label"><a href="browse_folder.html?folderID=2">Friends</a></div></li><li><div class="folder_item_bg"><img src="images/blank.gif" class="blank"><a href="browse_folder.html?folderID=3"><img src="images/blank_thumbnail.png" height="86" width="80"></a></div><div class="folder_label"><a href="browse_folder.html?folderID=3">Travel</a></div></li><li><div class="folder_item_bg"><img src="images/blank.gif" class="blank"><a href="browse_folder.html?folderID=4"><img src="images/blank_thumbnail.png" height="86" width="80"></a></div><div class="folder_label"><a href="browse_folder.html?folderID=4">Shopping</a></div></li><li><div class="folder_item_bg"><img src="images/blank.gif" class="blank"><a href="browse_folder.html?folderID=5"><img src="images/blank_thumbnail.png" height="86" width="80"></a></div><div class="folder_label"><a href="browse_folder.html?folderID=5">Funny;[CODE EXECUTION VULNERABILITY VIA FOLDERNAME!]></a></div></iframe></a></div></li></ul></div>
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</div>
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... after surfing to the created folder
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<div id="wrapper">
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<div id="header">
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<div id="title">
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<h1>Photo Manager Pro</h1>
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</div>
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</div>
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<div id="main">
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<div id="breadcrumb"><span id="breadcrumb_span"><a href="index.html">Home</a><label> > <a href="browse_folder.html?folderID=5">Funny;[CODE EXECUTION VULNERABILITY VIA FOLDERNAME!]></a></label></x></a></label></span></div>
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<form id="download_form" action="download.action" method="post">
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<div id="content"><ul></ul></div>
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</form>
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</div>
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PoC: Vulnerable Source
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}
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function createFolder() {
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$.ajax({
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type: 'POST',
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url: 'newfolder.action',
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cache: false,
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dataType: 'json',
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data: {folderName:$('#foldername').attr('value'), isSubfolder:$('#is_subfolder_hidden').attr('value'), parentFolderID:$('#parent_folder_hidden').attr('value')},
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async: false,
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success: function(result) {
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window.location.reload(false);
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}
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});
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}
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</script>
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--- Poc Session Logs [POST] (Inject) ---
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Status: 200[OK]
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POST http://localhost:8080/newfolder.action
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Load Flags[LOAD_BYPASS_CACHE LOAD_BACKGROUND ] Größe des Inhalts[23] Mime Type[application/x-unknown-content-type]
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Request Header:
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Host[localhost:8080]
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User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0]
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Accept[application/json, text/javascript, */*; q=0.01]
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Accept-Language[de,en-US;q=0.7,en;q=0.3]
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Accept-Encoding[gzip, deflate]
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Content-Type[application/x-www-form-urlencoded; charset=UTF-8]
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X-Requested-With[XMLHttpRequest]
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Referer[http://localhost:8080/index.html]
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Content-Length[50]
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Cookie[isenabledpasscode=false]
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Connection[keep-alive]
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Pragma[no-cache]
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Cache-Control[no-cache]
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POST-Daten:
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folderName[*/-CODE EXECUTION VULNERABILITY!;]
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isSubfolder[0]
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parentFolderID[0]
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Response Header:
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Accept-Ranges[bytes]
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Content-Length[23]
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Date[Do., 05 März 2015 20:34:46 GMT]
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Status: 200[OK]
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GET http://localhost:8080/index.html
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Load Flags[VALIDATE_ALWAYS LOAD_DOCUMENT_URI LOAD_INITIAL_DOCUMENT_URI ] Größe des Inhalts[9421] Mime Type[application/x-unknown-content-type]
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Request Header:
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Host[localhost:8080]
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User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0]
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Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
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Accept-Language[de,en-US;q=0.7,en;q=0.3]
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Accept-Encoding[gzip, deflate]
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Referer[http://localhost:8080/browse_folder.html?folderID=6]
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Cookie[isenabledpasscode=false]
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Connection[keep-alive]
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Cache-Control[max-age=0]
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Response Header:
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Accept-Ranges[bytes]
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Content-Length[9421]
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Date[Do., 05 März 2015 20:34:46 GMT]
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Status: 200[OK]
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GET http://localhost:8080/javascript/linkus.js
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Load Flags[VALIDATE_ALWAYS ] Größe des Inhalts[397] Mime Type[application/x-unknown-content-type]
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Request Header:
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Host[localhost:8080]
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User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0]
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Accept[*/*]
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Accept-Language[de,en-US;q=0.7,en;q=0.3]
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Accept-Encoding[gzip, deflate]
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Referer[http://localhost:8080/index.html]
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Cookie[isenabledpasscode=false]
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Connection[keep-alive]
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Cache-Control[max-age=0]
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Response Header:
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Accept-Ranges[bytes]
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Content-Length[397]
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Date[Do., 05 März 2015 20:34:46 GMT]
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Reference(s):
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http://localhost:8080/index.html
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http://localhost:8080/newfolder.action
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http://localhost:8080/index.html#?w=300
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http://localhost:8080/browse_folder.html?folderID=5
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Solution - Fix & Patch:
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=======================
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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
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prevent the application-side code execution.
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Security Risk:
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==============
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The security risk of the code execution vulnerability in the photo manager wifi service is estimated as high. (CVSS 8.6)
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Credits & Authors:
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==================
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Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri (bkm@evolution-sec.com) [www.vulnerability-lab.com]
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Disclaimer & Information:
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=========================
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The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed
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or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers are not liable
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in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability-Lab
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or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for
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consequential or incidental damages so the foregoing limitation may not apply. We do not approve or encourage anybody to break any vendor licenses,
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policies, deface websites, hack into databases or trade with fraud/stolen material.
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Domains: www.vulnerability-lab.com - www.vuln-lab.com - www.evolution-sec.com
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Contact: admin@vulnerability-lab.com - research@vulnerability-lab.com - admin@evolution-sec.com
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Copyright © 2015 | Vulnerability Laboratory - [Evolution Security GmbH]™
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