Home/CVE/Telerik UI for ASP.NET AJAX Unrestricted File Upload Vulnerability
CVE

CVE-2017-11317

Telerik UI for ASP.NET AJAX Unrestricted File Upload Vulnerability

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.

CRITICAL · CVSS 9.8 ⚠ CISA KEV EPSS 0.91967
Act now
  • Listed on CISA KEV (known exploited in the wild)
  • SSVC exploitation status: active
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 0% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬢

Required Remediation

Apply updates per vendor instructions.

⬡

Weakness Classification

CWE-326Inadequate Encryption Strength
CWE-326Inadequate Encryption Strength
▤

Affected Products & Versions

2
telerik ui for asp.net ajax<= 2016.3.1027
telerik ui for asp.net ajaxall versions
⚠

Public Exploits & PoCs

3
webappsTelerik UI for ASP.NET AJAX 2012.3.1308 < 2017.1.118 - Arbitrary File Upload2018-01-24
pocpacketstormsecurity.com · Telerik-UI-ASP.NET-AJAX-RadAsyncUpload-Deserialization.htmlpacketstormsecurity.com
pocwww.exploit-db.com · 43874www.exploit-db.com
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD23 Aug 2017 · 05:29 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
active
Automatable
yes
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

2
cisaKEV-CVE-2017-11317
cisa-csafcisa-csaf-csaf_files-OT-white-2021-icsa-21-077-03
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.telerik.com/support/kb/aspnet-ajax/upload-%28async%29/details/unrestricted-file-uploadMitigationVendor Advisory
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0006Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-11317US Government Resource
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