{"id":"CVE-2024-23656","summary":"Dex 2.37.0 is discarding TLSconfig and always serves deprecated TLS 1.0/1.1 and insecure ciphers","details":"Dex is an identity service that uses OpenID Connect to drive authentication for other apps. Dex 2.37.0 serves HTTPS with insecure TLS 1.0 and TLS 1.1. `cmd/dex/serve.go` line 425 seemingly sets TLS 1.2 as minimum version, but the whole `tlsConfig` is ignored after `TLS cert reloader` was introduced in v2.37.0. Configured cipher suites are not respected either. This issue is fixed in Dex 2.38.0.","aliases":["GHSA-gr79-9v6v-gc9r","GO-2024-2476"],"modified":"2026-08-12T03:51:42.639718604Z","published":"2024-01-25T19:45:41.237Z","related":["CGA-c697-ggf8-xx55"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-326","CWE-757"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/23xxx/CVE-2024-23656.json"},"references":[{"type":"WEB","url":"https://github.com/dexidp/dex/blob/70d7a2c7c1bb2646b1a540e49616cbc39622fb83/cmd/dex/serve.go#L425"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/23xxx/CVE-2024-23656.json"},{"type":"ADVISORY","url":"https://github.com/dexidp/dex/security/advisories/GHSA-gr79-9v6v-gc9r"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-23656"},{"type":"REPORT","url":"https://github.com/dexidp/dex/issues/2848"},{"type":"FIX","url":"https://github.com/dexidp/dex/commit/5bbdb4420254ba73b9c4df4775fe7bdacf233b17"},{"type":"FIX","url":"https://github.com/dexidp/dex/pull/2964"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/dexidp/dex","events":[{"introduced":"08bb7fb98b164ab078be17ecda4077b2d21c9bb3"},{"fixed":"5bbdb4420254ba73b9c4df4775fe7bdacf233b17"}],"database_specific":{"source":["CPE_STRING","REFERENCES"],"cpe":"cpe:2.3:a:linuxfoundation:dex:2.37.0:*:*:*:*:*:*:*","extracted_events":[{"introduced":"2.37.0"},{"last_affected":"2.37.0"}]}}],"versions":["2.37.0","= 2.37.0","v2.37.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-23656.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}