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.

CVSS v3 7.1 HIGH
CVSS v2.0 3.6 LOW

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

3.6^/10

CVSS v2.0 : LOW

Vector : AV:L/AC:L/Au:N/C:P/I:P/A:N

Exploitability : 3.9 / Impact : 4.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://bugs.launchpad.net/cloud-init/+bug/1781094	Patch Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1574338	Issue Tracking Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10896	Issue Tracking Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:canonical:cloud-init:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2018-08-01 17:29

Updated : 2024-02-28 16:48

NVD link : CVE-2018-10896

Mitre link : CVE-2018-10896

CVE.ORG link : CVE-2018-10896

JSON object : View

Products Affected

canonical

cloud-init

CWE

CWE-321

Use of Hard-coded Cryptographic Key

NVD-CWE-noinfo

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