Werk #15671: SAML: use RSA-SHA256 to sign authentication requests
Component | Setup, site management |
Title | SAML: use RSA-SHA256 to sign authentication requests |
Date | Apr 24, 2023 |
Checkmk Edition | Checkmk Enterprise (CEE) |
Checkmk Version | 2.3.0b1 2.2.0b7 |
Level | Trivial Change |
Class | New Feature |
Compatibility | Compatible - no manual interaction needed |
Checkmk would sign its authentication requests with RSA-SHA512. However, some identity providers (e.g. some versions of Microsoft ADFS) do not support any signature algorithms beyond SHA256. As a result, the authentication requests would be rejected with an error message similar to
"Error details: MSIS7093: The message is not signed with expected signature algorithm. Message is signed with signature algorithm http://www.w3.org/2001/04/xmldsig-more#rsa-sha512. Expected signature algorithm http://www.w3.org/2001/04/xmldsig-more#rsa-sha256."
For this reason, Checkmk now uses RSA-SHA256 to sign its authentication requests.