Back to KEVs

CVE-2019-18935

Progress Telerik UI for ASP.NET AJAX through 2019.3.1023 contains a .NET deserialization vulnerability in the RadAsyncUpload function. This is...

Basic Information

CVE State
PUBLISHED
Reserved Date
November 13, 2019
Published Date
December 11, 2019
Last Updated
February 04, 2025
Vendor
n/a
Product
n/a
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.)

CVSS Scores

SSVC Information

Exploitation
active
Automatable
Yes
Technical Impact
total

Exploit Status

Exploited in the Wild
Yes (added 2021-11-03 00:00:00 UTC) Source
Proof of Concept Available
Yes (added 2023-12-25 06:45:11 UTC) Source
Used in Malware
Yes (added 2021-11-03 00:00:00 UTC) Source

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/

Known Exploited Vulnerability Information

Source Added Date
CISA 2021-11-03 00:00:00 UTC

Scanner Integrations

Scanner URL Date Detected
Metasploit https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/telerik_rau_deserialization.rb 2025-04-29 11:01:39 UTC

Potential Proof of Concepts

Warning: These PoCs have not been tested and could contain malware. Use at your own risk.

telerik_rau_deserialization

Type: metasploit • Created: Unknown

Metasploit module for CVE-2019-18935

dust-life/CVE-2019-18935-memShell

Type: github • Created: 2023-12-25 06:45:11 UTC • Stars: 6

random-robbie/CVE-2019-18935

Type: github • Created: 2020-09-30 10:00:16 UTC • Stars: 5

CVE-2019-18935

murataydemir/CVE-2019-18935

Type: github • Created: 2020-08-19 17:11:02 UTC • Stars: 15

[CVE-2019-18935] Telerik UI for ASP.NET AJAX (RadAsyncUpload Handler) .NET JSON Deserialization

ThanHuuTuan/Telerik_CVE-2019-18935

Type: github • Created: 2020-05-25 08:37:51 UTC • Stars: 12

TelerikUI Vulnerability Scanner (CVE-2019-18935)

noperator/CVE-2019-18935

Type: github • Created: 2019-12-12 07:58:11 UTC • Stars: 351

RCE exploit for a .NET JSON deserialization vulnerability in Telerik UI for ASP.NET AJAX.