CVE-2018-10896

7.1 highEPSS 0.4%

High (7.1) in canonical cloud-init. EPSS 0.4% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.1 high

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

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 28% of CVEs (scores of 2026-10-31)
CWE: CWE-321
Published: 2018-08-01
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

canonical:cloud-init

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

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