CVE-2018-10896

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.

Score

CVSS 3.1 7.1 High

Status

Modified - secalert@redhat.com

Published

2018-08-01

Last modified

2024-08-05

Weaknesses

CWE-321

Affected products

• Cloud-init (Canonical)

References

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