High severity · published Jan 25, 2024
CVE-2024-23656
Dex is an identity service that uses OpenID Connect to drive authentication for other apps
7.5
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DE
Dex · Linuxfoundation
2.37.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-23656
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-23656
Product
https://github.com/dexidp/dex/blob/70d7a2c7c1bb2646b1a540e49616cbc39622fb83/cmd/dex/serve.go#L425
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
More from Dex
9.8
CVE-2020-27847
A vulnerability exists in the SAML connector of the github.com/dexidp/dex library used to process SAML Signature Validation
9.6
CVE-2020-26290
Dex is a federated OpenID Connect provider written in Go
6.5
CVE-2022-39222
OAuth authorization code exposure in Dex