| Summary: | Need additional cipher suites for LDAPS authentication | ||
|---|---|---|---|
| Product: | OpenShift Container Platform | Reporter: | Kenjiro Nakayama <knakayam> |
| Component: | apiserver-auth | Assignee: | Jordan Liggitt <jliggitt> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | weiwei jiang <wjiang> |
| Severity: | urgent | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 3.2.1 | CC: | aos-bugs, pep, wsun |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2016-10-28 07:39:32 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
OCP 3.3 is built with go 1.6 which already addresses the TLS handshake cipher suite negotiation reported here, so I'm closing this bug report as currentrelease. |
Description of problem: === - OpenShift(Golang) doesn't support enough ciphers suites. - The customer's environment(Windows AD) only allow: DHE-RSA-AES256-GCM-SHA384 DHE-RSA-AES128-GCM-SHA256 AES256-GCM-SHA384 AES128-GCM-SHA256 - We need to use OpenShift's LDAPS authentication with these cipher suites. Version-Release number of selected component (if applicable): === - OCP(OSE) 3.2 Additional info: === - The error message in Windows AD side is "An TLS 1.2 connection request was received from a remote client application, but none of the cipher suites supported by the client application are supported by the server. The SSL connection request has failed." - We confirmed that signature algorithm is sha256, so it is not the issue in https://access.redhat.com/solutions/2525721 $ openssl x509 -in ldaps.crt -text -noout ... Signature Algorithm: sha256WithRSAEncryption - We confirmed that AD administrator temporarily enabled TLS_RSA_WITH_AES_128_CBC_SHA and TLS_RSA_WITH_AES_256_CBC_SHA and it worked fine. However, they don't allow these ciphers in production environment. - Above requested cipher suites are included in TLS v1.2 cipher list. TLS v1.2 cipher suites - https://www.openssl.org/docs/manmaster/apps/ciphers.html (e.g) TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 DHE-RSA-AES256-GCM-SHA384