{"id":"CVE-2023-30851","summary":"Potential HTTP policy bypass when using header rules in Cilium","details":"Cilium is a networking, observability, and security solution with an eBPF-based dataplane. This issue only impacts users who have a HTTP policy that applies to multiple `toEndpoints` AND have an allow-all rule in place that affects only one of those endpoints. In such cases, a wildcard rule will be appended to the set of HTTP rules, which could cause bypass of HTTP policies. This issue has been patched in Cilium 1.11.16, 1.12.9, and 1.13.2.","aliases":["BIT-cilium-2023-30851","BIT-cilium-operator-2023-30851","BIT-cilium-proxy-2023-30851","BIT-hubble-2023-30851","BIT-hubble-relay-2023-30851","BIT-hubble-ui-2023-30851","BIT-hubble-ui-backend-2023-30851","GHSA-2h44-x2wx-49f4","GO-2023-1785"],"modified":"2026-04-21T04:08:15.425640Z","published":"2023-05-25T17:47:51.095Z","related":["CGA-xrqg-267f-7382"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/30xxx/CVE-2023-30851.json","cwe_ids":["CWE-693"],"cna_assigner":"GitHub_M"},"references":[{"type":"WEB","url":"https://github.com/cilium/cilium/releases/tag/v1.11.16"},{"type":"WEB","url":"https://github.com/cilium/cilium/releases/tag/v1.12.9"},{"type":"WEB","url":"https://github.com/cilium/cilium/releases/tag/v1.13.2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/30xxx/CVE-2023-30851.json"},{"type":"ADVISORY","url":"https://github.com/cilium/cilium/security/advisories/GHSA-2h44-x2wx-49f4"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-30851"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/cilium/cilium","events":[{"introduced":"c9723a8df3cfa336da1f8457a864105d8349acfe"},{"fixed":"8cb94c70f7105f29a69e754d2b8969117e681775"}]}],"versions":["1.13.0","1.13.1","v1.13.0","v1.13.1"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-30851.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N"}]}