Published on: Not Yet Published

Last Modified on: 03/17/2023 10:15:00 PM UTC

CVE-2023-27595 - advisory for GHSA-r5x6-w42p-jhpp

Source: Mitre Source: NIST CVE.ORG Print: PDF PDF

Certain versions of Cilium from Cilium contain the following vulnerability:

Cilium 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.

  • CVE-2023-27595 has been assigned by URL Logo [email protected] to track the vulnerability
  • Affected Vendor/Software: URL Logo cilium - cilium version = = 1.13.0

CVE References

Description Tags Link
Release 1.13.1 · cilium/cilium · GitHub
Cilium eBPF filters may be temporarily removed during agent restart · Advisory · cilium/cilium · GitHub
bpf, make netdev bpf filter cleanup less eager by ti-mo · Pull Request #24336 · cilium/cilium · GitHub

Known Affected Software

Vendor Product Version
Cilium cilium= = 1.13.0

Social Mentions

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Twitter Icon @CVEreport CVE-2023-27595 : Cilium is a networking, observability, and security solution with an eBPF-based dataplane. In vers…… 2023-03-17 22:02:11
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