CVE-2018-10896

Summary

CVECVE-2018-10896
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2018-08-01 17:29:00 UTC
Updated2023-02-13 04:51:00 UTC
DescriptionThe 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.

Risk And Classification

Problem Types: CWE-321

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Canonical Cloud-init All All All All
Application Canonical Cloud-init All All All All

References

ReferenceSourceLinkTags
Bug #1781094 “cloud.cfg.tmpl should not include “ssh_deletekeys:...” : Bugs : cloud-init CONFIRM bugs.launchpad.net Patch, Third Party Advisory
Red Hat Customer Portal - Access to 24x7 support and knowledge MISC access.redhat.com
Red Hat Customer Portal - Access to 24x7 support and knowledge MISC access.redhat.com
1574338 – CVE-2018-10896 cloud-init: SSH host keys are not regenerated for the new instances [rhel-7] CONFIRM bugzilla.redhat.com Issue Tracking, Third Party Advisory
1598831 – (CVE-2018-10896) CVE-2018-10896 cloud-init: default configuration disabled deletion of SSH host keys CONFIRM bugzilla.redhat.com Issue Tracking, Patch, Third Party Advisory
CVE-2018-10896 - Red Hat Customer Portal MISC access.redhat.com
Red Hat Customer Portal - Access to 24x7 support and knowledge MISC access.redhat.com
1598831 – (CVE-2018-10896) CVE-2018-10896 cloud-init: default configuration disabled deletion of SSH host keys MISC bugzilla.redhat.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 377271 Alibaba Cloud Linux Security Update for cloud-init (ALINUX2-SA-2020:0167)
  • 671398 EulerOS Security Update for cloud-init (EulerOS-SA-2022-1318)
  • 671661 EulerOS Security Update for cloud-init (EulerOS-SA-2022-1709)
  • 900171 CBL-Mariner Linux Security Update for cloud-init 19.1
  • 902792 Common Base Linux Mariner (CBL-Mariner) Security Update for cloud-init (1889)
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