CVE-2018-10896

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.

Category

7.1
CVSS
Severity: High
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.04%
Third-Party Advisory launchpad.net Third-Party Advisory redhat.com Third-Party Advisory redhat.com
Affected: Canonical cloud-init
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10896 patch third party advisory issue tracking
https://bugs.launchpad.net/cloud-init/+bug/1781094 third party advisory patch
https://bugzilla.redhat.com/show_bug.cgi?id=1574338 third party advisory issue tracking

Frequently Asked Questions

What is the severity of CVE-2018-10896?
CVE-2018-10896 has been scored as a high severity vulnerability.
How to fix CVE-2018-10896?
To fix CVE-2018-10896, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-10896 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-10896 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-10896?
CVE-2018-10896 affects Canonical cloud-init.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.