{"id":"CVE-2024-23656","state":"PUBLISHED","title":"Dex 2.37.0 is discarding TLSconfig and always serves deprecated TLS 1.0/1.1 and insecure ciphers","description":"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.","publishedAt":"2024-01-25T19:45:41.237Z","updatedAt":"2025-06-03T18:20:38.271Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["dexidp dex"],"affected":[{"vendor":"dexidp","product":"dex","versions":[{"version":"= 2.37.0","status":"affected"}]}],"references":["https://github.com/dexidp/dex/security/advisories/GHSA-gr79-9v6v-gc9r","https://github.com/dexidp/dex/issues/2848","https://github.com/dexidp/dex/pull/2964","https://github.com/dexidp/dex/commit/5bbdb4420254ba73b9c4df4775fe7bdacf233b17","https://github.com/dexidp/dex/blob/70d7a2c7c1bb2646b1a540e49616cbc39622fb83/cmd/dex/serve.go#L425"],"weaknesses":["CWE-326","CWE-757"],"ingestedAt":"2026-10-29T20:06:59.846Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/23xxx/CVE-2024-23656.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-23656","state":"PUBLISHED","datePublished":"2024-01-25T19:45:41.237Z","dateUpdated":"2025-06-03T18:20:38.271Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2024-01-19T00:18:53.235Z"},"containers":{"cna":{"title":"Dex 2.37.0 is discarding TLSconfig and always serves deprecated TLS 1.0/1.1 and insecure ciphers","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"dexidp","product":"dex","versions":[{"version":"= 2.37.0","status":"affected"}]}],"references":[{"url":"https://github.com/dexidp/dex/security/advisories/GHSA-gr79-9v6v-gc9r","name":"https://github.com/dexidp/dex/security/advisories/GHSA-gr79-9v6v-gc9r","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/dexidp/dex/issues/2848","name":"https://github.com/dexidp/dex/issues/2848","tags":["x_refsource_MISC"]},{"url":"https://github.com/dexidp/dex/pull/2964","name":"https://github.com/dexidp/dex/pull/2964","tags":["x_refsource_MISC"]},{"url":"https://github.com/dexidp/dex/commit/5bbdb4420254ba73b9c4df4775fe7bdacf233b17","name":"https://github.com/dexidp/dex/commit/5bbdb4420254ba73b9c4df4775fe7bdacf233b17","tags":["x_refsource_MISC"]},{"url":"https://github.com/dexidp/dex/blob/70d7a2c7c1bb2646b1a540e49616cbc39622fb83/cmd/dex/serve.go#L425","name":"https://github.com/dexidp/dex/blob/70d7a2c7c1bb2646b1a540e49616cbc39622fb83/cmd/dex/serve.go#L425","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-326","lang":"en","description":"CWE-326: Inadequate Encryption Strength","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-757","lang":"en","description":"CWE-757: Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2024-01-25T19:45:41.237Z"},"source":{"advisory":"GHSA-gr79-9v6v-gc9r","discovery":"UNKNOWN"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://github.com/dexidp/dex/security/advisories/GHSA-gr79-9v6v-gc9r","name":"https://github.com/dexidp/dex/security/advisories/GHSA-gr79-9v6v-gc9r","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://github.com/dexidp/dex/issues/2848","name":"https://github.com/dexidp/dex/issues/2848","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://github.com/dexidp/dex/pull/2964","name":"https://github.com/dexidp/dex/pull/2964","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://github.com/dexidp/dex/commit/5bbdb4420254ba73b9c4df4775fe7bdacf233b17","name":"https://github.com/dexidp/dex/commit/5bbdb4420254ba73b9c4df4775fe7bdacf233b17","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://github.com/dexidp/dex/blob/70d7a2c7c1bb2646b1a540e49616cbc39622fb83/cmd/dex/serve.go#L425","name":"https://github.com/dexidp/dex/blob/70d7a2c7c1bb2646b1a540e49616cbc39622fb83/cmd/dex/serve.go#L425","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-01T23:06:25.321Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-06-03T18:20:22.340742Z","id":"CVE-2024-23656","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-06-03T18:20:38.271Z"}}]}}}