Remote code execution in Progress Telerik UI for ASP.NET AJAX

Published: 2017-12-19

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2017-11317 CVE-2017-11357
CWE-ID	CWE-264
Exploitation vector	Network
Public exploit	Vulnerability #1 is being exploited in the wild. Public exploit code for vulnerability #2 is available.
Vulnerable software Subscribe	UI for ASP.NET AJAX Client/Desktop applications / Other client software
Vendor	Progress Telerik

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Improper security restrictions

EUVDB-ID: #VU9684

Risk: High

CVSSv3.1: 9.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2017-11317

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: Yes

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 weak RadAsyncUpload control encryption mechanism for data encryption. 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 2017.1.118 and 2017.2.711.

Vulnerable software versions

UI for ASP.NET AJAX: 2016.3.1027 - 2017.2.621

CPE2.3

cpe:2.3:a:progress:ui_for_aspnet_ajax:2017.2.621:*:*:*:*:*:*:*
Full software list in CPE2.3 format available after registration.

External links

http://www.telerik.com/support/kb/aspnet-ajax/upload-%28async%29/details/unrestricted-file-upload

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.

2) Improper security restrictions

EUVDB-ID: #VU9686