---
cve: "CVE-2023-52557"
severity: "HIGH"
cvss: 7.5
epss: "56%"
vendor: "OpenBSD"
kev: false
exploited: false
published: "2024-03-01 17:15:07"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-05T06:02:42+02:00"
---

# CVE-2023-52557

> 7.5 HIGH · 🧪 PoC

## Beschreibung

In OpenBSD 7.3 before errata 016, npppd(8) could crash by a l2tp message which has an AVP (Attribute-Value Pair) with wrong length.

## 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 |

## Referenzen

- <https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/016_npppd.patch.sig>
- <https://github.com/openbsd/src/commit/abf3a29384c582c807a621e7fc6e7c68d0cafe9b>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2023-52557) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_