Bug 2160349 (CVE-2023-0229) - CVE-2023-0229 openshift/apiserver-library-go: Bypass of SCC seccomp profile restrictions
Summary: CVE-2023-0229 openshift/apiserver-library-go: Bypass of SCC seccomp profile r...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2023-0229
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
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Depends On:
Blocks: 2155150 2160352
TreeView+ depends on / blocked
 
Reported: 2023-01-12 06:11 UTC by Sam Fowler
Modified: 2024-04-17 11:40 UTC (History)
7 users (show)

Fixed In Version:
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A flaw was found in github.com/openshift/apiserver-library-go, used in OpenShift 4.12 and 4.11, that contains an issue that can allow low-privileged users to set the seccomp profile for pods they control to "unconfined." By default, the seccomp profile used in the restricted-v2 Security Context Constraint (SCC) is "runtime/default," allowing users to disable seccomp for pods they can create and modify.
Clone Of:
Environment:
Last Closed: 2023-05-18 06:31:36 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2023:1325 0 None None None 2023-05-17 22:53:39 UTC

Description Sam Fowler 2023-01-12 06:11:03 UTC 
In github.com/openshift/apiserver-library-go, used in OpenShift 4.12 and 4.11, a bug was found that can allows low privileged users to set the seccomp profile for pods they control to "unconfined". By default the seccomp profile used in the restricted-v2 Security Context Contstraint (SCC) is "runtime/default", thus this bug allows users disable seccomp for pods they can create and/or modify.

Seccomp is one of many security layers used in OpenShift, including SELinux, dropping of capabilities and running as non-root, so on its own disabling of seccomp does not allow a direct path to privilege escalation. However, it is possible that exploit of this bug could be used in combination with another vulnerability, e.g. a potential kernel privilege escalation flaw, to allow a user to escape a container.
Comment 7 errata-xmlrpc 2023-05-17 22:53:37 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.13

Via RHSA-2023:1325 https://access.redhat.com/errata/RHSA-2023:1325
Comment 8 Product Security DevOps Team 2023-05-18 06:31:34 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2023-0229
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