File Sharing And Chat 1.0 Denial Of Service

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  • File Sharing and Chat version 1.0 for iOS suffers from a denial of service vulnerability.
    MD5 | 807f8e46aa296b66e21c773f1e5ca723
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    Document Title:  
    ===============  
    File Sharing & Chat v1.0 iOS - Denial of Service Vulnerability  
    References (Source):  
    ====================  
    https://www.vulnerability-lab.com/get_content.php?id=2222  
    Release Date:  
    =============  
    2020-04-27  
    Vulnerability Laboratory ID (VL-ID):  
    ====================================  
    2222  
    Common Vulnerability Scoring System:  
    ====================================  
    4  
    Vulnerability Class:  
    ====================  
    Denial of Service  
    Current Estimated Price:  
    ========================  
    500€ - 1.000€  
    Product & Service Introduction:  
    ===============================  
    WiFi File Transfer is easiest and quickest file sharing application,  
    supporting multiple files sharing with multiple devices simultaneously.  
    WiFi File Transfer Application provides solution for the iPhone users  
    who want to connect their mobile with PC without connecting a data cable  
    or wire. WiFi File Sharing App provides the connectivity of mobile  
    device with PC through Wi-Fi. User can copy, paste, and delete files from  
    phone by connecting it with Computer. App also supports transfer between  
    one iPhone to another iPhone.  
    (Copy of the Homepage:  
    https://apps.apple.com/us/app/file-sharing-chat-connect-transfer-easy-file-sharing/id1137340773  
    )  
    Abstract Advisory Information:  
    ==============================  
    The vulnerability laboratory core research team discovered a remote  
    denial of service vulnerability in the  
    Affected Product(s):  
    ====================  
    Sandeep Bhandari  
    File Sharing & Chat v1.0 - Apple iOS Mobile Web Application  
    Vulnerability Disclosure Timeline:  
    ==================================  
    2020-04-27: Public Disclosure (Vulnerability Laboratory)  
    Discovery Status:  
    =================  
    Published  
    Exploitation Technique:  
    =======================  
    Remote  
    Severity Level:  
    ===============  
    Medium  
    Authentication Type:  
    ====================  
    No authentication (guest)  
    User Interaction:  
    =================  
    No User Interaction  
    Disclosure Type:  
    ================  
    Independent Security Research  
    Technical Details & Description:  
    ================================  
    A denial of service web vulnerability has been discovered in the  
    official mobile ios web-application.  
    The vulnerability allows remote attackers to crash or freeze the  
    application process or its components.  
    Attackers are able to transmit special crafted chat messages to trigger  
    a validation error that is able  
    to crash the mobile ios application process. The error occurs due to the  
    transmit of the message body content.  
    On delivery all connected clients to the chats are crashing at the same  
    time.  
    Proof of Concept (PoC):  
    =======================  
    The denial of service 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.  
    Manual steps to reproduce the vulnerability ...  
    1. Open the web-application  
    2. Open the chat module on the buttom of the app index  
    3. Insert payload and transmit via send to all users  
    4. All app clients do crash with an uncaught validation exception  
    5. Successful reproduce of the denial of service vulnerability!  
    PoC: Exploitation  
    ็‰ º • • • •  
    Security Risk:  
    ==============  
    The security risk of the denial of service web vulnerability in the  
    mobile web-application is estimated as medium.  
    Credits & Authors:  
    ==================  
    Vulnerability-Lab -  
    https://www.vulnerability-lab.com/show.php?user=Vulnerability-Lab  
    Benjamin Kunz Mejri -  
    https://www.vulnerability-lab.com/show.php?user=Benjamin%20K.M.  
    Disclaimer & Information:  
    =========================  
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    Source: packetstormsecurity.com

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