Detections
Analytics
CVE-2019-18935
critical
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.)
From the Tenable Blog
Copy-Paste Compromises: Threat Actors Target Telerik UI, Citrix, and SharePoint Vulnerabilities (CVE-2019-18935)
Published: 2020-07-22
Threat actors utilize publicly available proof of concept code and exploit scripts to target unpatched vulnerabilities within organizations and government entities.
References
https://thehackernews.com/2025/02/xe-hacker-group-exploits-veracore-zero.html
https://intezer.com/blog/research/xe-group-exploiting-zero-days/
https://www.cisa.gov/news-events/cybersecurity-advisories/aa24-317a
https://unit42.paloaltonetworks.com/silent-skimmer-latest-campaign/
https://services.google.com/fh/files/misc/m-trends-2024.pdf
https://www.tenable.com/cyber-exposure/a-look-inside-the-ransomware-ecosystem
https://www.cisa.gov/news-events/cybersecurity-advisories/aa22-117a
https://www.cisa.gov/news-events/cybersecurity-advisories/aa21-209a
https://www.cybereason.com/blog/research/cybereason-vs.-netwalker-ransomware
https://www.telerik.com/support/whats-new/release-history
https://www.telerik.com/support/kb/aspnet-ajax/details/allows-javascriptserializer-deserialization
https://know.bishopfox.com/research/cve-2019-18935-remote-code-execution-in-telerik-ui
https://github.com/noperator/CVE-2019-18935
https://github.com/bao7uo/RAU_crypto
https://codewhitesec.blogspot.com/2019/02/telerik-revisited.html