CVE-2019-18935

HIGH

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.)

References

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

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

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

https://github.com/bao7uo/RAU_crypto

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

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

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

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

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

Details

Source: MITRE

Published: 2019-12-11

Updated: 2020-10-20

Type: CWE-502

Risk Information

CVSS v2.0

Base Score: 7.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 10

Severity: HIGH

CVSS v3.0

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL