{"id":"GHSA-v6q2-4qr3-5cw6","summary":"Unencrypted traffic between nodes when using WireGuard and L7 policies","details":"### Impact\n\nIn Cilium clusters with WireGuard enabled and traffic matching Layer 7 policies:\n\n- Traffic that should be WireGuard-encrypted is sent unencrypted between a node's Envoy proxy and pods on other nodes.\n- Traffic that should be WireGuard-encrypted is sent unencrypted between a node's DNS proxy and pods on other nodes.\n\n### Patches\n\nThis issue affects:\n\n* In native routing mode (`routingMode=native`):\n  * Cilium v1.14 versions before v1.14.8\n  * Cilium v1.15 versions before v1.15.2\n* In tunneling mode (`routingMode=tunnel`):\n  * Cilium v1.14 versions before v1.14.4\n  * Cilium v1.14.4 if `encryption.wireguard.encapsulate` is set to `false` (default).\n\nThis issue has been resolved in:\n\n* In native routing mode (`routingMode=native`):\n  * Cilium v1.14.8\n  * Cilium v1.15.2\n* In tunneling mode (`routingMode=tunnel`):\n  * Cilium v1.14.4. **NOTE** `encryption.wireguard.encapsulate` must be set to `true`.\n   \n### Workarounds\n\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 @brb, @giorio94, @gandro and @jschwinger233 for their work on triaging and remediating 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 found a related vulnerability, we strongly encourage you to report security vulnerabilities to our private security mailing list at [security@cilium.io](mailto:security@cilium.io). This is a private mailing list where only members of the Cilium internal security team are subscribed to, and your report will be treated as top priority.\n","aliases":["BIT-cilium-2024-28250","BIT-cilium-operator-2024-28250","BIT-cilium-proxy-2024-28250","BIT-hubble-2024-28250","BIT-hubble-relay-2024-28250","BIT-hubble-ui-2024-28250","BIT-hubble-ui-backend-2024-28250","CVE-2024-28250","GO-2024-2657"],"modified":"2026-07-17T21:07:37.575631692Z","published":"2024-03-18T20:33:32Z","database_specific":{"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2024-03-18T20:33:32Z","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-v6q2-4qr3-5cw6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-28250"},{"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":"1.14.0"},{"fixed":"1.14.8"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/03/GHSA-v6q2-4qr3-5cw6/GHSA-v6q2-4qr3-5cw6.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-v6q2-4qr3-5cw6/GHSA-v6q2-4qr3-5cw6.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"}]}