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.)
Is CVE-2019-18935 exploited?
Listed in the CISA KEV catalog on 2021-11-03.
Federal remediation due 2022-05-03.
Past that date by 1588 days.
Used in ransomware campaigns.
EPSS puts exploitation in the next 30 days at 99.7%.
Public exploit code: packaged in a public tool.
Which products and versions are affected?
telerik · ui for asp.net ajax · >= 2011.1.315, <= 2020.1.114