Progress Telerik UI for ASP.NET AJAX through 2019.3.1023 contains a .NET deserialization vulnerability in the RadAsyncUpload function. Telewreck A Burp extension to detect and exploit versions of Telerik Web UI vulnerable to CVE-2017-9248. This is exploitable when the encryption keys are known due to the presence of CVE-2017-11317 or CVE-2017-11357, or other means. Point line 17 of build-dll.bat to the path of your Visual Studio installation. Use Burp Collaborator and/or Responder to facilitate testing whether the necessary pre-requisites are in place. The Exploit Database is maintained by Offensive Security, an information security training company that provides various Information Security Certifications as well as high end penetration testing services. This is exploitable when the encryption keys are known due to the presence of CVE-2017-11317 or CVE-2017-11357, or other means. The Exploit Database is a non-profit project that is provided as a public service by Offensive Security. Pwning Web Applications via Telerik Web UI » 03 Aug 2018 [Backdoor 101] Backdooring PE File w/ User Interaction & Custom Encoder Using Existing Code Cave » 21 Jul 2018 [Backdoor 101] Backdooring PE File by Adding New Section Header » 16 Jul 2018 [VulnServer] Exploiting HTER Command using Hex Characters Only » 01 Jul 2018 Beware egress filtering rules on the target network when trying to initiate a reverse TCP connection back to your C2 server. All code references in this post are also available in the CVE-2019-18935 GitHub repo.. Telerik UI for ASP.NET AJAX is a widely used suite of UI components for web applications. Select the Telerik® UI for ASP.NET AJAX package, e.g., Telerik.UI.for.AspNet.Ajax.Net45) and click Install.The package name is built in the following format: Telerik.UI.for.AspNet.Ajax.Net<.NET version of your project> and you should make sure to select the desired Telerik version. Telerik UI for ASP.NET AJAX 2012.3.1308 < 2017.1.118 - Arbitrary File Upload. If nothing happens, download GitHub Desktop and try again. Description Progress Telerik UI for ASP.NET AJAX through 2019.3.1023 contains a.NET deserialization vulnerability in the RadAsyncUpload function. Use Git or checkout with SVN using the web URL. SOLUTIONS Proof-of-concept exploit for a .NET JSON deserialization vulnerability in Telerik UI for ASP.NET AJAX allowing remote code execution. For details on custom payloads for .NET deserialisation, there is a great article by @mwulftange who discovered this vulnerability on the Code White blog at the following link. webapps exploit for ASPX platform In order to do so the module must upload a mixed mode.NET assembly DLL which is then loaded through the deserialization flaw. More info on server setup here. Telerik UI for ASP.NET AJAX 2012.3.1308 < 2017.1.118 - Encryption Keys Disclosure. webapps exploit for ASPX platform This exploit leverages encryption logic from RAU_crypto. 3. Telerik issued a patch for these vulnerabilities in 2017, however due to the nature of the software, the patches may need to be manually applied. Similar workflow is available in other remote repository providers. I'm inclined to believe Telerik's info, but just curious if you had some insight into the apparent discrepancies in version numbers. If nothing happens, download the GitHub extension for Visual Studio and try again. Telerik has 274 repositories available. You signed in with another tab or window. """ Name: Telewreck Version: 1.0 Author: Capt. For more details on how this works, read the header in the payload source. It insecurely deserializes JSON objects in a manner that results in arbitrary remote code … This extension is based on the original exploit tool written by Paul Taylor (@bao7uo) which is available at https://github.com/bao7uo/dp_crypto. Create a new project in Graphite/Mist. Learn and educate yourself with malware analysis, cybercrime This module exploits the.NET deserialization vulnerability within the RadAsyncUpload (RAU) component of Telerik UI ASP.NET AJAX that is identified as CVE-2019-18935. RCE exploit for a .NET JSON deserialization vulnerability in Telerik UI for ASP.NET AJAX. Some payloads (e.g., reverse-shell.c and sliver-stager.c) require you to set the HOST and PORT fields to point to your C2 server—be sure to do that! python >= 3.6 with pycryptodome (https://www.pycryptodome.org/en/latest/src/installation.html) - installed with pip3 install pycryptodome or pip3 install pycryptodomex (As of 2020.1.114, a default setting prevents the exploit. If the key can't be bruteforced and/or there are some issues, it's recommended to fall back to the original exploit tool. Exploitation can result in remote code execution. Learn more. In the example above, the application took at least 10 seconds to respond, indicating that the DLL payload successfully invoked Sleep(10000). Personal Access Token. you need to follow these steps: 1. If the key can’t be bruteforced, then probably the key has been set up securely and/or the application is not using a default installation of Telerik. An exploit can result in arbitrary file uploads and/or remote code execution. This may take some guesswork; the sleep payload is useful here. https://github.com/bao7uo/RAU_crypto Overview This exploit attacks a weak encryption implementation to discover the dialog handler key for vulnerable versions of Telerik UI for ASP.NET AJAX, then provides an encrypted link which gives access to a file manager, and arbitrary file upload (e.g. CVE-2017-11357CVE-2017-11317 . Combined exploit for Telerik UI for ASP.NET AJAX. CVE-2017-9248 . 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