CVE-2024-8676: Cri-o: checkpoint restore can be triggered from different namespaces
A vulnerability was found in CRI-O, where it can be requested to take a checkpoint archive of a container and later be asked to restore it. When it does that restoration, it attempts to restore the mounts from the restore archive instead of the pod request. As a result, the validations run on the pod spec, verifying that the pod has access to the mounts it specifies are not applicable to a restored container. This flaw allows a malicious user to trick CRI-O into restoring a pod that doesn't have access to host mounts. The user needs access to the kubelet or cri-o socket to call the restore endpoint and trigger the restore.
Security readout for executives and security teams
Plain-English summary
CVE-2024-8676 lets CRI-O restore a container checkpoint using mounts from the archive, bypassing pod mount validation. If an attacker can reach the kubelet or CRI-O socket, they may restore a pod with unauthorized host mounts, risking host data exposure or modification.
Executive priority
Prioritize remediation for OpenShift or Kubernetes environments with shared administration, multi-tenant workloads, or broad node socket access. This is not reported as actively exploited, but unauthorized host mount access can materially affect confidentiality and integrity.
Technical view
The flaw is an authorization bypass in CRI-O checkpoint restore. During restore, CRI-O validates the requested pod spec but restores mount definitions from the checkpoint archive. That mismatch can permit host mounts not authorized for the pod. Red Hat rates it high, CVSS 7.4, CWE-285.
Likely exposure
Highest concern is Kubernetes/OpenShift nodes where untrusted users, workloads, or automation can access the kubelet or CRI-O socket. Red Hat lists affected OpenShift 4.15, 4.16, 4.17, 4.18 components and some RHEL container packages. Product status varies by package and advisory.
Exploitation context
The provided sources do not show CISA KEV listing or confirmed active exploitation. Exploitation requires access to the kubelet or CRI-O socket and ability to trigger the restore endpoint, making socket exposure and node-level access controls central to risk.
Researcher notes
Key issue is validation confusion between pod spec mounts and checkpoint archive mounts during restore. Do not assume network-only exposure; practical exploitability depends on access to kubelet or CRI-O socket. Red Hat package impact is nuanced, so validate by advisory and installed package.
Mitigation direction
Apply applicable Red Hat errata for affected OpenShift, RHCOS, and RHEL container packages.
Review Red Hat CVE guidance for exact package status and fixed builds.
Restrict kubelet and CRI-O socket access to trusted node components only.
Disable or tightly control checkpoint/restore workflows where not operationally required.
Validation and detection
Inventory OpenShift, RHCOS, CRI-O, podman, and conmon versions against Red Hat advisories.
Confirm affected nodes have received the relevant Red Hat security or bugfix errata.
Verify untrusted users and workloads cannot access kubelet or CRI-O sockets.
Review cluster policies governing checkpoint and restore capability usage.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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cwe · low confidence lookup
CWE-285: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
The affected technology mentions containers, so container-specific ATT&CK technique review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
1CVSS vectors
5Timeline events
1ADP providers
9Source links
SSVC decision data
CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: total
CVSS vector scores
1 official score
We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE-285 · source CWE mapping
Improper Authorization
Improper Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.