Deserialization of Untrusted Data in UI for ASP.NET AJAX - CVE-2019-18935
Published: December 11, 2019 / Updated: October 9, 2021
Vulnerability identifier: #VU47861
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber
CVE-ID: CVE-2019-18935
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: Progress Telerik
Affected software:
UI for ASP.NET AJAX
UI for ASP.NET AJAX
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insecure input validation when processing serialized data in the "RadAsyncUpload" function. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2019-18935
Install updates from vendor's website.
Sources
- 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