CISA KEV · Known exploitedCritical

CVE-2017-9248

Progress ASP.NET AJAX and Sitefinity

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.

CVSS: 9.8
EPSS: 75.1%
CISA KEV: Listed
Published: 2017.07.04

PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV

Exploit probability75.1%

Technical severityCVSS 9.8

Vulnerability overview

Affected product and versions

Product: Progress ASP.NET AJAX and Sitefinity
Affected versions: < 10.0.6412.0, <= 2017.2.503
Fixed versions: 10.0.6412.0

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

CISA required action

Apply updates per vendor instructions.

Due date: 2022.05.03

1
Identify
Confirm that Progress ASP.NET AJAX and Sitefinity and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-522
KEV added: 2021.11.03
Ransomware use: 미확인