CVE Vulnerability Advisory Database

[Affected Scope] Progress Telerik UI for ASP.NET AJAX versions through 2019.3.1023 (and certain configurations prior to 2020.1.114)

[Impact] If encryption keys are compromised or known, attackers can exploit the RadAsyncUpload function to deserialize malicious .NET objects, resulting in unauthorized Remote Code Execution (RCE) on the target web server.

[Mitigation] Upgrade Telerik UI to version 2020.1.114 or later, or immediately modify web.config to disable RadAsyncUpload or rotate the encryption keys.

[Affected Scope] Progress Telerik UI for ASP.NET AJAX versions prior to R2 2017 SP2

[Impact] Unauthenticated remote attackers can exploit the vulnerable RadAsyncUpload component to upload arbitrary malicious files (such as ASPX webshells) and execute arbitrary code with web server privileges

[Mitigation] Immediately upgrade Telerik UI for ASP.NET AJAX to R2 2017 SP2 or later, or apply workarounds by disabling RadAsyncUpload and hardening encryption keys

[Affected Scope] Progress Telerik UI for ASP.NET AJAX versions before R1 2017 and R2 before R2 2017 SP2

[Impact] Remote attackers can exploit weak encryption to perform unrestricted file uploads or execute arbitrary code on the target server

[Mitigation] Upgrade to the latest patched version of Telerik UI, or configure strong custom encryption keys in web.config

[Affected Scope] Progress Telerik UI for ASP.NET AJAX versions prior to R2 2017 SP1, and Sitefinity versions prior to 10.0.6412.0

[Impact] Attackers can compromise cryptographic protections to leak the MachineKey, perform arbitrary file uploads/downloads, execute XSS, or compromise ASP.NET ViewState to achieve Remote Code Execution (RCE)

[Mitigation] Upgrade to the latest secure version or manually configure a strong, unique DialogParametersEncryptionKey and MachineKey in web.config