{"id":"BIT-envoy-2023-27496","summary":"Envoy may crash when a redirect url without a state param is received in the oauth filter","details":"Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, the OAuth filter assumes that a `state` query param is present on any response that looks like an OAuth redirect response. Sending it a request with the URI path equivalent to the redirect path, without the `state` parameter, will lead to abnormal termination of Envoy process. Versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9 contain a patch. The issue can also be mitigated by locking down OAuth traffic, disabling the filter, or by filtering traffic before it reaches the OAuth filter (e.g. via a lua script).","aliases":["CVE-2023-27496","GHSA-j79q-2g66-2xv5"],"modified":"2026-09-08T08:47:26.093546508Z","published":"2024-03-06T10:53:33.396Z","database_specific":{"cpes":["cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*"],"severity":"High"},"references":[{"type":"ADVISORY","url":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-j79q-2g66-2xv5"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-27496"}],"affected":[{"package":{"name":"envoy","ecosystem":"Bitnami","purl":"pkg:bitnami/envoy"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.22.9"},{"introduced":"1.23.0"},{"fixed":"1.23.6"},{"introduced":"1.24.0"},{"fixed":"1.24.4"},{"introduced":"1.25.0"},{"fixed":"1.25.3"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/envoy/BIT-envoy-2023-27496.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}],"schema_version":"1.9.0"}