VULNERABILITY INTELLIGENCE

CVE-2018-10896

CVSS score7.1 HIGH
EPSS probability0.35%
CISA KEVNot currently listed
Published2018-08-01
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Description

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.

Weakness classification

  • CWE-321: Use of Hard-coded Cryptographic Key

Primary references