---
cve: "CVE-2018-10896"
severity: "MEDIUM"
cvss: 4.6
epss: "35%"
vendor: "Canonical"
kev: false
exploited: false
published: "2018-08-01 17:29:00"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-11T00:41:37+02:00"
---

# CVE-2018-10896

> 4.6 MEDIUM

## Beschreibung

The default cloud-init configuration, in cloud-init 0.6.2 and newer, included "ssh_deletekeys: 0", disabling cloud-init's deletion of ssh host keys. In some environments, this could lead to instances created by cloning a golden master or template system, sharing ssh host keys, and being able to impersonate one another or conduct man-in-the-middle attacks.

## CVSS-Vektor

```
CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
```

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

## Patch verfügbar (OSV)

- e28000457591bde9f22d6b7a538b1fc33349d780 (Commit)

## Referenzen

- <https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10896>
- <https://bugs.launchpad.net/cloud-init/+bug/1781094>
- <https://bugzilla.redhat.com/show_bug.cgi?id=1574338>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2018-10896) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_