CVE-2017-9248

Known Exploited Public Exploit

Description

Telerik.Web.UI.dll in Progress Telerik UI for ASP.NET AJAX before R2 2017 SP1 and Sitefinity before 10.0.6412.0 does not properly protect Telerik.Web.UI.DialogParametersEncryptionKey or the MachineKey, which makes it easier for remote attackers to defeat cryptographic protection mechanisms, leading to a MachineKey leak, arbitrary file uploads or downloads, XSS, or ASP.NET ViewState compromise.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 85.30% Top 5%
KEV Since 
Vendor Advisory telerik.com Vendor Advisory telerik.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.telerik.com/support/kb/aspnet-ajax/details/cryptographic-weakness mitigation vendor advisory
https://www.exploit-db.com/exploits/43873/ exploit vdb entry third party advisory
http://www.telerik.com/blogs/security-alert-for-telerik-ui-for-asp.net-ajax-and-progress-sitefinity vendor advisory
http://www.securityfocus.com/bid/99965 vdb entry third party advisory broken link

Frequently Asked Questions

What is the severity of CVE-2017-9248?
CVE-2017-9248 has been scored as a critical severity vulnerability.
How to fix CVE-2017-9248?
To fix CVE-2017-9248, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-9248 being actively exploited in the wild?
It is confirmed that CVE-2017-9248 is actively exploited. Be extra cautious if you are using vulnerable components. According to its EPSS score, there is a ~85% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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