CVE-2023-27595

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Summary

CVECVE-2023-27595
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-03-17 22:15:00 UTC
Updated2023-03-24 16:37:00 UTC
DescriptionCilium is a networking, observability, and security solution with an eBPF-based dataplane. In version 1.13.0, when Cilium is started, there is a short period when Cilium eBPF programs are not attached to the host. During this period, the host does not implement any of Cilium's featureset. This can cause disruption to newly established connections during this period due to the lack of Load Balancing, or can cause Network Policy bypass due to the lack of Network Policy enforcement during the window. This vulnerability impacts any Cilium-managed endpoints on the node (such as Kubernetes Pods), as well as the host network namespace (including Host Firewall). This vulnerability is fixed in Cilium 1.13.1 or later. Cilium releases 1.12.x, 1.11.x, and earlier are not affected. There are no known workarounds.

Risk And Classification

Problem Types: CWE-755

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Cilium Cilium 1.13.0 All All All

References

ReferenceSourceLinkTags
Release 1.13.1 · cilium/cilium · GitHub MISC github.com
Cilium eBPF filters may be temporarily removed during agent restart · Advisory · cilium/cilium · GitHub MISC github.com
bpf,init.sh: make netdev bpf filter cleanup less eager by ti-mo · Pull Request #24336 · cilium/cilium · GitHub MISC github.com
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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