CVE-2018-2475
Due to missing network isolation a shoot's apiserver can access services/endpoints in the private network of its corresponding seed cluster.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.35%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.0
- 8.5 HIGHCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 1.35% probability · 70th percentile
- CISA KEV
- Not listed
- Affected
- gardener/gardener
- Source
- cna@sap.com
References
- http://www.securityfocus.com/bid/105579Third Party Advisory, VDB Entry
- https://groups.google.com/forum/#%21topic/gardener/OjfKEe1LwXo
- https://launchpad.support.sap.com/#/notes/2699726Permissions Required, Vendor Advisory
- https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=500633095Vendor Advisory
- http://www.securityfocus.com/bid/105579Third Party Advisory, VDB Entry
- https://groups.google.com/forum/#%21topic/gardener/OjfKEe1LwXo
- https://launchpad.support.sap.com/#/notes/2699726Permissions Required, Vendor Advisory
- https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=500633095Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.