---
cve: "CVE-2023-3036"
severity: "HIGH"
cvss: 8.6
epss: "2.2%"
vendor: "Cloudflare"
kev: false
exploited: false
published: "2023-06-14 12:15:09"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T09:13:49+02:00"
---

# CVE-2023-3036

> 8.6 HIGH · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Keine | good |
| I Integrität | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Referenzen

- <https://github.com/cloudflare/cfnts/security/advisories/GHSA-pwx6-gw47-96cp>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2023-3036) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_