---
cve: "CVE-2023-3773"
severity: "MEDIUM"
cvss: 5.5
epss: "25%"
vendor: "Red Hat"
kev: false
exploited: false
published: "2023-07-25 16:15:11"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-13T02:13:36+02:00"
---

# CVE-2023-3773

> 5.5 MEDIUM

## Beschreibung

A flaw was found in the Linux kernel’s IP framework for transforming packets (XFRM subsystem). This issue may allow a malicious user with CAP_NET_ADMIN privileges to cause a 4 byte out-of-bounds read of XFRMA_MTIMER_THRESH when parsing netlink attributes, leading to potential leakage of sensitive heap data to userspace.

## CVSS-Vektor

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

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

## Referenzen

- <https://access.redhat.com/errata/RHSA-2023:6583>
- <https://access.redhat.com/security/cve/CVE-2023-3773>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2218944>
- <https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html>
- <https://www.debian.org/security/2023/dsa-5492>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2023-3773) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_