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CVE-2019-18935

Published: Dec 11, 2019

Modified: Oct 21, 2025

PUBLISHED

Description

Progress Telerik UI for ASP.NET AJAX through 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.)

Vendor	Product	Versions
n/a	n/a	affected `n/a`

References

https://www.telerik.com/support/whats-new/release-history

https://codewhitesec.blogspot.com/2019/02/telerik-revisited.html

https://www.telerik.com/support/kb/aspnet-ajax/details/allows-javascriptserializer-deserialization

https://github.com/bao7uo/RAU_crypto

https://know.bishopfox.com/research/cve-2019-18935-remote-code-execution-in-telerik-ui

https://github.com/noperator/CVE-2019-18935

http://packetstormsecurity.com/files/155720/Telerik-UI-Remote-Code-Execution.html

https://www.telerik.com/support/whats-new/aspnet-ajax/release-history/ui-for-asp-net-ajax-r1-2020-%28version-2020-1-114%29

http://packetstormsecurity.com/files/159653/Telerik-UI-ASP.NET-AJAX-RadAsyncUpload-Deserialization.html

https://www.bleepingcomputer.com/news/security/us-federal-agency-hacked-using-old-telerik-bug-to-steal-data/

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