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.
Published 2017-07-03 19:29:00
Updated 2019-10-03 00:03:26
Source MITRE
View at NVD,
Vulnerability category: Cross site scripting (XSS)

CVE-2017-9248 is in the CISA Known Exploited Vulnerabilities Catalog

CISA vulnerability name:
Progress Telerik UI for ASP.NET AJAX and Sitefinity Cryptographic Weakness Vulnerability
CISA required action:
Apply updates per vendor instructions.
CISA description:
Progress Telerik UI for ASP.NET AJAX and Sitefinity have a cryptographic weakness in Telerik.Web.UI.dll that can be exploited to disclose encryption keys (Telerik.Web.UI.DialogParametersEncryptionKey and/or the MachineKey), perform cross-site-scripting (XSS) attacks, compromise the ASP.NET ViewState
Added on 2021-11-03 Action due date 2022-05-03

Exploit prediction scoring system (EPSS) score for CVE-2017-9248

Probability of exploitation activity in the next 30 days: 17.89%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 96 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2017-9248

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source

CWE ids for CVE-2017-9248

  • The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.
    Assigned by: (Primary)

References for CVE-2017-9248

Products affected by CVE-2017-9248

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