Bug 2215555 (CVE-2023-2431)

Summary:	CVE-2023-2431 kubernetes: Bypass of seccomp profile enforcement
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	adudiak, akarol, amctagga, aveerama, bbuckingham, bcourt, cwelton, dfreiber, dhughes, dmetzger, dsimansk, dymurray, eglynn, ehelms, ellin, gmccullo, gtanzill, jburrell, jchaloup, jhardy, jjoyce, jkoehler, jmatthew, jsherril, kshier, lball, lhh, lzap, matzew, mburns, mgarciac, mhulan, muagarwa, myarboro, nbecker, nmoumoul, nobody, orabin, pcreech, pgrist, rchan, rgarg, rhos-maint, rhuss, rjohnson, rogbas, roliveri, scorneli, shbose, simaishi, skontopo, smallamp, stcannon, tfister, ubhargav, vkumar, whayutin, yguenane
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in Kubernetes. This issue occurs when Kubernetes allows a local authenticated attacker to bypass security restrictions, caused by a flaw when using the localhost type for a seccomp profile but specifying an empty profile field. An attacker can bypass the seccomp profile enforcement by sending a specially crafted request.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2215560, 2219239, 2219241, 2219242, 2219260, 2215556, 2215559, 2215561, 2219238, 2219240
Bug Blocks:	2215557

Description Guilherme de Almeida Suckevicz 2023-06-16 13:59:30 UTC

A security issue was discovered in Kubelet that allows pods to bypass the seccomp profile enforcement. Pods that use localhost type for seccomp profile but specify an empty profile field, are affected by this issue. In this scenario, this vulnerability allows the pod to run in unconfined (seccomp disabled) mode. This bug affects Kubelet.

References:
https://groups.google.com/g/kubernetes-security-announce/c/QHmx0HOQa10
https://github.com/kubernetes/kubernetes/issues/118690

Comment 1 Guilherme de Almeida Suckevicz 2023-06-16 13:59:52 UTC

Created kubernetes tracking bugs for this issue:

Affects: fedora-all [bug 2215556]

Comment 4 Fedora Update System 2023-06-27 10:55:07 UTC

FEDORA-2023-c7f63322b5 has been pushed to the Fedora 38 stable repository.
If problem still persists, please make note of it in this bug report.