{"id":"BIT-envoy-2024-23324","summary":"Envoy ext auth can be bypassed when Proxy protocol filter sets invalid UTF-8 metadata","details":"Envoy is a high-performance edge/middle/service proxy. External authentication can be bypassed by downstream connections. Downstream clients can force invalid gRPC requests to be sent to ext_authz, circumventing ext_authz checks when failure_mode_allow is set to true. This issue has been addressed in released 1.29.1, 1.28.1, 1.27.3, and 1.26.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.","aliases":["CVE-2024-23324","GHSA-gq3v-vvhj-96j6"],"modified":"2026-09-08T08:47:25.901361661Z","published":"2024-03-06T10:51:54.396Z","database_specific":{"cpes":["cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*"],"severity":"High"},"references":[{"type":"ADVISORY","url":"https://github.com/envoyproxy/envoy/commit/29989f6cc8bfd8cd2ffcb7c42711eb02c7a5168a"},{"type":"ADVISORY","url":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-gq3v-vvhj-96j6"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-23324"}],"affected":[{"package":{"name":"envoy","ecosystem":"Bitnami","purl":"pkg:bitnami/envoy"},"ranges":[{"type":"SEMVER","events":[{"introduced":"1.26.0"},{"fixed":"1.26.7"},{"introduced":"1.27.0"},{"fixed":"1.27.3"},{"introduced":"1.28.0"},{"fixed":"1.28.1"},{"introduced":"1.29.0"},{"fixed":"1.29.1"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/envoy/BIT-envoy-2024-23324.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}],"schema_version":"1.9.0"}