CVE-2018-2475 Information

Description

Following the Gardener architecture the Kubernetes apiserver of a Gardener managed shoot cluster resides in the corresponding seed cluster. Due to missing network isolation a shoot’s apiserver can access services/endpoints in the private network of its corresponding seed cluster. Combined with other minor Kubernetes security issues the missing network isolation theoretically can lead to compromise other shoot or seed clusters in the \Gardener\ context. The issue is rated high due to the high impact of a potential exploitation in \Gardener\ context. This was fixed in Gardener release 0.12.4.

CVSS Vector

CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Reference

http://www.securityfocus.com/bid/105579 https://groups.google.com/forum/!topic/gardener/OjfKEe1LwXo https://launchpad.support.sap.com//notes/2699726 https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=500633095

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.5