---
cve: "CVE-2024-12378"
severity: "CRITICAL"
cvss: 9.1
epss: "0.5%"
vendor: "Arista Networks"
kev: false
exploited: false
published: "2025-05-08 19:15:57"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-11-09T15:31:56+01:00"
---

# CVE-2024-12378

> 9.1 CRITICAL

## Beschreibung

On affected platforms running Arista EOS with secure Vxlan configured, restarting the Tunnelsec agent will result in packets being sent over the secure Vxlan tunnels in the clear.

## CNA-Record (Kanon, cvelistV5)

- CNA: **Arista**
- State: PUBLISHED
- Stand: 2025-05-08 19:18:27
- CNA-CVSS: **9.1** (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **yes**
  - Technical Impact: **total**

## CVSS-Vektor

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

| 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 | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Keine | good |

## Schwachstellen-Klasse

- **CWE-319** — Cleartext Transmission of Sensitive Information
  The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors.

## Angriffsmuster (CAPEC)

- [CAPEC-65 — Sniff Application Code](https://capec.mitre.org/data/definitions/65.html) _(Severity: High)_
- [CAPEC-102 — Session Sidejacking](https://capec.mitre.org/data/definitions/102.html) _(Severity: High)_
- [CAPEC-117 — Interception](https://capec.mitre.org/data/definitions/117.html) _(Severity: Medium)_
- [CAPEC-383 — Harvesting Information via API Event Monitoring](https://capec.mitre.org/data/definitions/383.html) _(Severity: Low)_
- [CAPEC-477 — Signature Spoofing by Mixing Signed and Unsigned Content](https://capec.mitre.org/data/definitions/477.html) _(Severity: High)_

## ATT&CK-Techniken

- [T1040 — Network Sniffing](https://attack.mitre.org/techniques/T1040/)
- [T1056.004 — Input Capture: Credential API Hooking](https://attack.mitre.org/techniques/T1056/004/)

## BSI-Hinweise (deutsch)

- [Arista EOS: Schwachstelle ermöglicht Offenlegung von Informationen](https://wid.cert-bund.de/portal/wid/sicherheitshinweis/WID-SEC-W-2025-0767) — _BSI-Einstufung: hoch_
  Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Arista EOS ausnutzen, um Informationen offenzulegen.

## Referenzen

- <https://www.arista.com/en/support/advisories-notices/security-advisory/21289-security-advisory-0113>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2024-12378/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_