Vulnerability record

CVE-2017-11317

Telerik UI for ASP.NET AJAX Unrestricted File Upload Vulnerability

Severity: CriticalExploitation: Exploitation confirmedCISA KEV
What should I do?

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run User Interface (UI) for ASP.NET AJAX, fix it now.

CISA required action: Apply updates per vendor instructions.

US federal civilian agencies must remediate by May 2, 2022.

Patch status

No official fix confirmed yet

Until a fix ships, follow the vendor's mitigations and CISA's required action, limit exposure of affected systems, and watch this record for a patch.

Description

Telerik.Web.UI in Progress Telerik UI for ASP.NET AJAX before R1 2017 and R2 before R2 2017 SP2 uses weak RadAsyncUpload encryption, which allows remote attackers to perform arbitrary file uploads or execute arbitrary code.

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Affected products

Products affected by this vulnerability, with versions and the source of each entry
ProductVendorSource
User Interface (UI) for ASP.NET AJAXTelerikKEV

Sources: KEV = CISA Known Exploited Vulnerabilities catalog. Version details have not been published yet.

Intelligence timeline

Developments from the last 30 days, newest first.

  1. CVSS scoredUpdateKEV

    CVE-2017-11317 scored CVSS 9.8: Telerik User Interface (UI) for ASP.NET AJAX, Telerik UI for ASP.NET AJAX Unrestricted File Upload Vulnerability

    CISA lists this as exploited in the wild. Unpatched User Interface (UI) for ASP.NET AJAX systems are exposed to active attacks now.

    Basis: NIST National Vulnerability Database

1 earlier event is available with a subscription. See plans.

Coverage

We have not published a story about this vulnerability yet.

References

  • nvd.nist.gov https://nvd.nist.gov/vuln/detail/CVE-2017-11317
  • packetstormsecurity.com http://packetstormsecurity.com/files/159653/Telerik-UI-ASP.NET-AJAX-RadAsyncUpload-Deserialization.html
  • telerik.com http://www.telerik.com/support/kb/aspnet-ajax/upload-%28async%29/details/unrestricted-file-upload
  • psirt.global.sonicwall.com https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0006
  • exploit-db.com https://www.exploit-db.com/exploits/43874/
  • cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-11317