#VU77480 Insufficiently protected credentials in UI for ASP.NET AJAX - CVE-2017-9248

Vulnerability identifier: #VU77480

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-2017-9248

CWE-ID: CWE-522

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 compromise the target system.

The vulnerability exists due to the affected application does not properly protect Telerik.Web.UI.DialogParametersEncryptionKey or the MachineKey. A remote attacker can defeat cryptographic protection mechanisms.

Mitigation
Install update from vendor's website.

Vulnerable software versions

UI for ASP.NET AJAX: before R2 2017 SP1

---

External links
https://www.securityfocus.com/bid/99965
https://www.telerik.com/blogs/security-alert-for-telerik-ui-for-asp.net-ajax-and-progress-sitefinity
https://www.telerik.com/support/kb/aspnet-ajax/details/cryptographic-weakness
https://www.exploit-db.com/exploits/43873/

---

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.