CVE-2018-10896
Last modified
CVE-2018-10896 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. 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.. EPSS estimates a 0.35% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Canonical | Cloud-Init | >= 0.6.2, < 18.4 |
References
- https://bugs.launchpad.net/cloud-init/+bug/1781094Patch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1574338Issue Tracking, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10896Issue Tracking, Patch, Third Party Advisory
- https://bugs.launchpad.net/cloud-init/+bug/1781094Patch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1574338Issue Tracking, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10896Issue Tracking, Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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