#VU9686 Improper security restrictions in UI for ASP.NET AJAX - CVE-2017-11357

Vulnerability identifier: #VU9686

Vulnerability risk: High

CVSSv4.0: 9.3 [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-2017-11357

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
UI for ASP.NET AJAX
Client/Desktop applications / Other client software

Vendor: Progress Telerik

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists in Progress Telerik User Interface (UI) for ASP.NET AJAX due to use of user-supplied input by RadAsyncUpload without modification or validation. A remote attacker can upload arbitrary files and execute arbitrary code with elevated privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Update to version 2017.2.711.

Vulnerable software versions

UI for ASP.NET AJAX: 2016.3.1027 - 2017.2.621

---

External links
https://www.telerik.com/support/kb/aspnet-ajax/upload-%28async%29/details/insecure-direct-object-ref...

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.