{"id":"GHSA-j89h-qrvr-xc36","summary":"Unencrypted traffic between nodes when using IPsec and L7 policies","details":"### Impact\n\nIn Cilium clusters with IPsec enabled and traffic matching Layer 7 policies:\n\n- Traffic that should be IPsec-encrypted between a node's Envoy proxy and pods on other nodes is sent unencrypted\n- Traffic that should be IPsec-encrypted between a node's DNS proxy and pods on other nodes is sent unencrypted\n\n**Note:** For clusters running in native routing mode, IPsec encryption is not applied to connections which are selected by a L7 Egress Network Policy or a DNS Policy. This is a known limitation of Cilium's IPsec encryption which will continue to apply after upgrading to the latest Cilium versions described below.\n\n### Patches\n\nThis issue affects: \n\n- Cilium v1.15 before v1.15.2\n- Cilium v1.14 before v1.14.8\n- Cilium v1.13 before v1.13.13\n- Cilium v1.4 to v1.12 inclusive\n\nThis issue has been resolved in:\n\n- Cilium v1.15.2\n-  Cilium v1.14.8\n-  Cilium v1.13.13\n\n### Workarounds\nThere is no workaround to this issue.\n\n### Acknowledgements\nThe Cilium community has worked together with members of Isovalent to prepare these mitigations. Special thanks to @jschwinger233, @julianwiedmann, @giorio94, and @jrajahalme for their work in triaging and resolving this issue.   \n\n### For more information\nIf you have any questions or comments about this advisory, please reach out on [Slack](https://docs.cilium.io/en/latest/community/community/#slack).\n\nIf you think you have found a vulnerability in Cilium, we strongly encourage you to report it to our private security mailing list at [security@cilium.io](mailto:security@cilium.io). This is a private mailing list that only members of the Cilium internal security team are subscribed to, and your report will be treated as top priority.","aliases":["BIT-cilium-2024-28249","BIT-cilium-operator-2024-28249","BIT-cilium-proxy-2024-28249","BIT-hubble-2024-28249","BIT-hubble-relay-2024-28249","BIT-hubble-ui-2024-28249","BIT-hubble-ui-backend-2024-28249","CVE-2024-28249","GO-2024-2656"],"modified":"2026-07-17T21:10:30.365203541Z","published":"2024-03-18T20:30:41Z","database_specific":{"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2024-03-18T20:30:41Z","nvd_published_at":"2024-03-18T22:15:08Z","cwe_ids":["CWE-311","CWE-319"]},"references":[{"type":"WEB","url":"https://github.com/cilium/cilium/security/advisories/GHSA-j89h-qrvr-xc36"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-28249"},{"type":"PACKAGE","url":"https://github.com/cilium/cilium"},{"type":"WEB","url":"https://github.com/cilium/cilium/releases/tag/v1.13.13"},{"type":"WEB","url":"https://github.com/cilium/cilium/releases/tag/v1.14.8"},{"type":"WEB","url":"https://github.com/cilium/cilium/releases/tag/v1.15.2"}],"affected":[{"package":{"name":"github.com/cilium/cilium","ecosystem":"Go","purl":"pkg:golang/github.com/cilium/cilium"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.13.13"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/03/GHSA-j89h-qrvr-xc36/GHSA-j89h-qrvr-xc36.json"}},{"package":{"name":"github.com/cilium/cilium","ecosystem":"Go","purl":"pkg:golang/github.com/cilium/cilium"},"ranges":[{"type":"SEMVER","events":[{"introduced":"1.14.0"},{"fixed":"1.14.8"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/03/GHSA-j89h-qrvr-xc36/GHSA-j89h-qrvr-xc36.json"}},{"package":{"name":"github.com/cilium/cilium","ecosystem":"Go","purl":"pkg:golang/github.com/cilium/cilium"},"ranges":[{"type":"SEMVER","events":[{"introduced":"1.15.0"},{"fixed":"1.15.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/03/GHSA-j89h-qrvr-xc36/GHSA-j89h-qrvr-xc36.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N"}]}