CVE-2017-9248: Progress Telerik UI for ASP.NET AJAX and Sitefinity Cryptographic Weakness Vulnerability
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, and/or upload and download files.
| Vendor | Progress |
|---|---|
| Product | ASP.NET AJAX and Sitefinity |
| Date added to KEV | 2021-11-03 |
| Due date (BOD 22-01) | 2022-05-03 |
| Known ransomware campaign use | Unknown |
| CWE | CWE-522 |
| Required action | Apply updates per vendor instructions. |
What to do
- Identify every instance of Progress ASP.NET AJAX and Sitefinity in your environment (asset inventory, EDR, vulnerability scanner).
- Apply CISA's required action: Apply updates per vendor instructions.
- Federal civilian agencies must act by 2022-05-03 under BOD 22-01; other organizations can use the same date as a target.
- Check the vendor advisory and NVD entry linked below for affected versions, then record the fix in your change log.
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Sources
- NVD entry for CVE-2017-9248 (severity scores, if any, live there)
- CISA KEV catalog entry
- https://nvd.nist.gov/vuln/detail/CVE-2017-9248