---
cve: "CVE-2023-23759"
severity: "HIGH"
cvss: 7.5
epss: "72%"
vendor: "Facebook"
kev: false
exploited: false
published: "2023-05-18 22:15:09"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T22:49:44+02:00"
---

# CVE-2023-23759

> 7.5 HIGH · 🧪 PoC

## Beschreibung

There is a vulnerability in the fizz library prior to v2023.01.30.00 where a CHECK failure can be triggered remotely. This behavior requires the client supported cipher advertisement changing between the original ClientHello and the second ClientHello, crashing the process (impact is limited to denial of service).

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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 | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- 378232e895c5ef87559127424ca5c6459b8a0abb (Commit)
- 8d3649841597bedfb6986c30431ebad0eb215265 (Commit)

## Referenzen

- <https://www.facebook.com/security/advisories/cve-2023-23759>
- <https://github.com/facebookincubator/fizz/commit/8d3649841597bedfb6986c30431ebad0eb215265>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2023-23759) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_