CVE-2023-3036
8.6 · HIGHOverview
CVE-2023-3036 is a high-severity vulnerability affecting cloudflare cfnts. It was published on June 14, 2023 and has a CVSS 3.1 base score of 8.6 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
An unchecked read in NTP server in github.com/cloudflare/cfnts prior to commit 783490b https://github.com/cloudflare/cfnts/commit/783490b913f05e508a492cd7b02e3c4ec2297b71 enabled a remote attacker to trigger a panic by sending an NTSAuthenticator packet with extension length longer than the packet contents.
Remediation
Check the references section for vendor advisories and patches from cloudflare. Update cfnts to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| cloudflare | cfnts | >= 0, < 2023-06-01 | Affected |
Frequently Asked Questions
What is CVE-2023-3036?
CVE-2023-3036 is a high-severity vulnerability affecting cloudflare cfnts. It was published on June 14, 2023 and has a CVSS 3.1 base score of 8.6 (HIGH).
How severe is CVE-2023-3036?
This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2023-3036?
Check the references section for vendor advisories and patches from cloudflare. Update cfnts to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2023-3036?
CyberStrike's AI-powered security agents can automatically detect CVE-2023-3036 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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