CVE-2024-23656

moderate-risk
Published 2024-01-25

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.

Do I need to act?

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0.24% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (1)

Dex

Affected Vendors

Linuxfoundation

References (10)

Product https://github.com/dexidp/dex/blob/70d7a2c7c1bb2646b1a540e49616cbc39622fb83/cmd/...
Patch https://github.com/dexidp/dex/commit/5bbdb4420254ba73b9c4df4775fe7bdacf233b17
Issue Tracking https://github.com/dexidp/dex/issues/2848
Issue Tracking https://github.com/dexidp/dex/pull/2964
Exploit https://github.com/dexidp/dex/security/advisories/GHSA-gr79-9v6v-gc9r
Product https://github.com/dexidp/dex/blob/70d7a2c7c1bb2646b1a540e49616cbc39622fb83/cmd/...
Patch https://github.com/dexidp/dex/commit/5bbdb4420254ba73b9c4df4775fe7bdacf233b17
Issue Tracking https://github.com/dexidp/dex/issues/2848
Issue Tracking https://github.com/dexidp/dex/pull/2964
Exploit https://github.com/dexidp/dex/security/advisories/GHSA-gr79-9v6v-gc9r
32
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 1/34 · Minimal
Exposure 5/34 · Minimal