CVE-2018-10896

high

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.

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

Details

Source: Mitre, NVD

Published: 2018-08-01

Risk Information

CVSS v2

Base Score: 3.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:N

Severity: Low

CVSS v3

Base Score: 7.1

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Severity: High