CRITICAL CVSS 9.8
Published: 2017-08-23

CVE-2017-11357

progress telerik_ui_for_asp.net_ajax Security Advisory (CVE-2017-11357)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2017-11357 impacting progress telerik_ui_for_asp.net_ajax. Evaluated with CVSS Base Score of 9.8 (CRITICAL).

Original NVD Description

Source: NIST NVD
Progress Telerik UI for ASP.NET AJAX before R2 2017 SP2 does not properly restrict user input to RadAsyncUpload, which allows remote attackers to perform arbitrary file uploads or execute arbitrary code.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Network (AV:N)
Exploitable remotely across internet boundaries
Attack Complexity
Low (AC:L)
No specialized conditions required
Privileges Required
None (PR:N)
Unauthenticated execution
User Interaction
None (UI:N)
Zero human interaction required
Scope
Unchanged (S:U)
Confined to same security context
Confidentiality
High (C:H)
Total information disclosure
Integrity
High (I:H)
Total modification of target system
Availability
High (A:H)
Total denial of service or shutdown

🎯 Affected Versions Matrix

Affected Product progress / telerik_ui_for_asp.net_ajax
Affected Versions *
Weakness Enumeration CWE-434

Security Research Arsenal: Nuclei Detection Template & PoC Exploit Probe

High-Intent Research Tool

Ready-to-use security scanner signatures, active verification probe skeletons, and remediation playbooks for CVE-2017-11357 impacting progress telerik_ui_for_asp.net_ajax.

⚡ Nuclei Detection Template (YAML) cve-2017-11357.yaml
id: cve-2017-11357

info:
  name: progress telerik_ui_for_asp.net_ajax - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: critical
  description: |
    Automated signature & scanner for CVE-2017-11357 affecting progress telerik_ui_for_asp.net_ajax.
    Evaluation: Progress Telerik UI for ASP.NET AJAX before R2 2017 SP2 does not properly restrict user input to RadAsyncUpload, which allows remote attackers to perf...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2017-11357
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2017-11357
    cwe-id: CWE-434
  tags: cve,cve-2017-11357,progress,telerik_ui_for_asp.net_aj,critical

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "telerik_ui_for_asp.net_ajax"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2017-11357.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2017-11357
# Target: progress telerik_ui_for_asp.net_ajax | CVSS: 9.8 (CRITICAL)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2017-11357 (progress telerik_ui_for_asp.net_ajax)...")
    headers = {
        "User-Agent": "CyberVault-Audit-Scanner/2.0",
        "Accept": "*/*"
    }
    try:
        r = requests.get(f"{target_url.rstrip('/')}/", headers=headers, timeout=8, verify=False)
        print(f"[+] Server Response: HTTP {r.status_code} | Server Banner: {r.headers.get('Server', 'Unknown')}")
        if r.status_code < 500:
            print(f"[!] Target reachable. Verify version against progress telerik_ui_for_asp.net_ajax scope (*).")
        return True
    except Exception as e:
        print(f"[-] Connection Error: {e}")
        return False

if __name__ == '__main__':
    url = sys.argv[1] if len(sys.argv) > 1 else "http://localhost:8080"
    verify_vulnerability(url)
🛡️ Quick Patch & Remediation Script (Bash) patch_cve-2017-11357.sh
# Recommended Remediation & Patching Commands for CVE-2017-11357
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install telerik_ui_for_asp.net_aj 2>/dev/null || \
sudo dnf upgrade telerik_ui_for_asp.net_aj 2>/dev/null || \
sudo yum update telerik_ui_for_asp.net_aj

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i telerik_ui_for_asp.net_aj 2>/dev/null || rpm -qa | grep -i telerik_ui_for_asp.net_aj

# 3. Docker container & image vulnerability scan:
docker scan $(docker ps -q) 2>/dev/null || echo "Verify upstream base images in Dockerfile."

🛡️ Remediation & Security Action

  • Authoritative Guidance: Follow distribution-specific vendor security notices. Advisory status and package patches vary by distribution release.
  • Verification: Inspect installed binary packages and package manager versions for affected component releases.
  • Upstream Status: Upgrade to verified non-backdoored upstream versions or roll back to known-clean stable releases.
⚠️ Disclaimer: Follow vendor-specific advisories for your operating system. CyberVault does not fabricate unsupported remediation scripts.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2017-11357 in progress telerik_ui_for_asp.net_ajax?

Review vendor-specific security notices and update progress telerik_ui_for_asp.net_ajax packages to the latest patched release immediately. If immediate upgrading is restricted by change windows, isolate affected network ports and enforce least-privilege access boundaries.

Is there an active exploit or public PoC for CVE-2017-11357?

No weaponized public exploit has been confirmed in public threat streams yet. Continuous surveillance is active across GitHub and security feeds.

What is the CVSS 3.1 severity rating and impact for CVE-2017-11357?

CVE-2017-11357 is classified with a CVSS 3.1 Base Score of 9.8 (CRITICAL). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
9.8
CRITICAL SEVERITY
CVE ID CVE-2017-11357
Weakness CWE-434
Vendor progress
Product telerik_ui_for_asp.net_ajax
Published 2017-08-23
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H