{"id":"GHSA-p4rx-7wvg-fwrc","summary":"CRI-O's pods can break out of resource confinement on cgroupv2","details":"### Impact\n_What kind of vulnerability is it? Who is impacted?_\nAll versions of CRI-O running on cgroupv2 nodes. \nUnchecked access to an experimental annotation allows a container to be unconfined. Back in 2021, [support was added](https://github.com/cri-o/cri-o/pull/4479) to support an experimental annotation that allows a user to request special resources in cgroupv2. It was supposed to be gated by an experimental annotation: `io.kubernetes.cri-o.UnifiedCgroup`, which was supposed to be filtered from the [list of allowed annotations](https://github.com/cri-o/cri-o/blob/main/pkg/config/workloads.go#L103-L107) . However, there is a bug in this code which allows any user to specify this annotation, regardless of whether it's enabled on the node. The consequences of this are a pod can specify any amount of memory/cpu and get it, circumventing the kubernetes scheduler, and potentially be able to DOS a node. \n### Patches\n_Has the problem been patched? What versions should users upgrade to?_\n1.29.1, 1.28.3, 1.27.3\n\n### Workarounds\n_Is there a way for users to fix or remediate the vulnerability without upgrading?_\nuse cgroupv1\n\n### References\n_Are there any links users can visit to find out more?_\n","aliases":["CVE-2023-6476","GO-2024-2458"],"modified":"2024-06-28T15:59:54.674723Z","published":"2024-01-10T15:27:45Z","database_specific":{"cwe_ids":["CWE-400","CWE-770"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2024-01-10T15:27:45Z","nvd_published_at":"2024-01-09T22:15:43Z"},"references":[{"type":"WEB","url":"https://github.com/cri-o/cri-o/security/advisories/GHSA-p4rx-7wvg-fwrc"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-6476"},{"type":"WEB","url":"https://github.com/cri-o/cri-o/pull/4479"},{"type":"WEB","url":"https://github.com/cri-o/cri-o/commit/75effcb1a25851a736e82dba1f7d8cee93ee159e"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2024:0195"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2024:0207"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2023-6476"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2253994"},{"type":"PACKAGE","url":"https://github.com/cri-o/cri-o"},{"type":"WEB","url":"https://github.com/cri-o/cri-o/blob/main/pkg/config/workloads.go#L103-L107"}],"affected":[{"package":{"name":"github.com/cri-o/cri-o","ecosystem":"Go","purl":"pkg:golang/github.com/cri-o/cri-o"},"ranges":[{"type":"SEMVER","events":[{"introduced":"1.29.0"},{"fixed":"1.29.1"}]}],"versions":["1.29.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/01/GHSA-p4rx-7wvg-fwrc/GHSA-p4rx-7wvg-fwrc.json"}},{"package":{"name":"github.com/cri-o/cri-o","ecosystem":"Go","purl":"pkg:golang/github.com/cri-o/cri-o"},"ranges":[{"type":"SEMVER","events":[{"introduced":"1.28.0"},{"fixed":"1.28.3"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/01/GHSA-p4rx-7wvg-fwrc/GHSA-p4rx-7wvg-fwrc.json"}},{"package":{"name":"github.com/cri-o/cri-o","ecosystem":"Go","purl":"pkg:golang/github.com/cri-o/cri-o"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.27.3"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/01/GHSA-p4rx-7wvg-fwrc/GHSA-p4rx-7wvg-fwrc.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}