What is CVE-2018-10896?

CVE-2018-10896 is a high-severity vulnerability in Canonical Cloud-Init, classified under Use of Hard-coded Cryptographic Key. CVSS score: 7.1/10. Published 2018-08-01.

How severe is CVE-2018-10896?

High severity. CVSS v3 base score is 7.1 out of 10.

Vulnerability in Canonical Cloud-Init

CVE-2018-10896

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: 0.004 (28.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

Affected products

Canonical Cloud-init — versions 0.6.2

Weakness classification (CWE)

CWE-321 — Use of Hard-coded Cryptographic Key

References

secalert@redhat.com (x_refsource_CONFIRM, Patch, Third Party Advisory, Issue Tracking)
secalert@redhat.com (x_refsource_CONFIRM, Patch, Third Party Advisory)
secalert@redhat.com (x_refsource_CONFIRM, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2018-10896?: CVE-2018-10896 is a high-severity vulnerability in Canonical Cloud-Init, classified under Use of Hard-coded Cryptographic Key. CVSS score: 7.1/10. Published 2018-08-01.
How severe is CVE-2018-10896?: High severity. CVSS v3 base score is 7.1 out of 10.