Telerik UI for ASP.NET AJAX RadAsyncUpload .NET Deserialization Vulnerability

According to its self-reported version number, the version of Telerik UI for ASP.NET AJAX prior to 2019.3.1023 contains a .NET deserialization vulnerability in the RadAsyncUpload function. This is exploitable when the encryption keys are known due to the presence of CVE-2017-11317 or CVE-2017-11357, or other means. Exploitation can result in remote code execution. As of 2020.1.114, a default setting prevents the exploit. In 2019.3.1023, but not earlier versions, a non-default setting can prevent exploitation.

Note that the scanner has not tested for these issues but has instead relied only on the application’s self-reported version number.