CVE-2024-23656

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.

• CWE-326
• CWE-757
• CWE-326

• https://github.com/dexidp/dex/blob/70d7a2c7c1bb2646b1a540e49616cbc39622fb83/cmd/dex/serve.go#L425Product
• https://github.com/dexidp/dex/commit/5bbdb4420254ba73b9c4df4775fe7bdacf233b17Patch
• https://github.com/dexidp/dex/issues/2848Issue Tracking
• https://github.com/dexidp/dex/pull/2964Issue Tracking, Patch
• https://github.com/dexidp/dex/security/advisories/GHSA-gr79-9v6v-gc9rExploit
• https://github.com/dexidp/dex/blob/70d7a2c7c1bb2646b1a540e49616cbc39622fb83/cmd/dex/serve.go#L425Product
• https://github.com/dexidp/dex/commit/5bbdb4420254ba73b9c4df4775fe7bdacf233b17Patch
• https://github.com/dexidp/dex/issues/2848Issue Tracking
• https://github.com/dexidp/dex/pull/2964Issue Tracking, Patch
• https://github.com/dexidp/dex/security/advisories/GHSA-gr79-9v6v-gc9rExploit

Published

Jan 25, 2024

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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