I have configured SAML 2.0 SSO with our own IdP.
My local splunk app http://khal:8000/ successfully redirect to Assertion consumer URL. Then I enter user and pass there and get an error message on spunk login page:
Verification of SAML assertion using the IDP's certificate provided failed. Error: Failed to verify signature with cert
Here is /opt/splunk/var/log/splunk/splunkd.log:
11-27-2019 16:59:30.229 +0200 ERROR XmlParser - func=xmlSecOpenSSLX509StoreVerify:file=x509vfy.c:line=341:obj=x509-store:subj=unknown:error=71:certificate verification failed:X509_verify_cert: subject=/CN=selfSi
gned; issuer=/CN=selfSignedCA; err=20; msg=unable to get local issuer certificate
11-27-2019 16:59:30.229 +0200 ERROR XmlParser - func=xmlSecOpenSSLX509StoreVerify:file=x509vfy.c:line=380:obj=x509-store:subj=unknown:error=71:certificate verification failed:subject=/CN=selfSigned; issuer=/CN=s
elfSignedCA; err=20; msg=unable to get local issuer certificate
11-27-2019 16:59:30.229 +0200 ERROR XmlParser - func=xmlSecOpenSSLKeyDataX509VerifyAndExtractKey:file=x509.c:line=1505:obj=x509:subj=unknown:error=72:certificate is not found:details=NULL
11-27-2019 16:59:30.229 +0200 ERROR XmlParser - func=xmlSecOpenSSLKeyDataX509XmlRead:file=x509.c:line=655:obj=x509:subj=xmlSecOpenSSLKeyDataX509VerifyAndExtractKey:error=1:xmlsec library function failed:
11-27-2019 16:59:30.229 +0200 ERROR XmlParser - func=xmlSecKeyInfoNodeRead:file=keyinfo.c:line=117:obj=x509:subj=xmlSecKeyDataXmlRead:error=1:xmlsec library function failed:node=X509Data
11-27-2019 16:59:30.229 +0200 ERROR XmlParser - func=xmlSecKeysMngrGetKey:file=keys.c:line=1230:obj=unknown:subj=xmlSecKeyInfoNodeRead:error=1:xmlsec library function failed:node=KeyInfo
11-27-2019 16:59:30.229 +0200 ERROR XmlParser - func=xmlSecDSigCtxProcessKeyInfoNode:file=xmldsig.c:line=790:obj=unknown:subj=unknown:error=45:key is not found:details=NULL
11-27-2019 16:59:30.229 +0200 ERROR XmlParser - func=xmlSecDSigCtxProcessSignatureNode:file=xmldsig.c:line=503:obj=unknown:subj=xmlSecDSigCtxProcessKeyInfoNode:error=1:xmlsec library function failed:
11-27-2019 16:59:30.229 +0200 ERROR XmlParser - func=xmlSecDSigCtxVerify:file=xmldsig.c:line=341:obj=unknown:subj=xmlSecDSigCtxSignatureProcessNode:error=1:xmlsec library function failed:
11-27-2019 16:59:30.229 +0200 ERROR Saml - Error: Failed to verify signature with cert :/opt/splunk/etc/auth/idpCerts/idpCert.pem;
11-27-2019 16:59:30.229 +0200 ERROR Saml - Unable to verify Saml document
11-27-2019 16:59:30.229 +0200 ERROR UiSAML - Verification of SAML assertion using the IDP's certificate provided failed. Error: Failed to verify signature with cert
Here is /opt/splunk/etc/system/local/authentication.conf:
[saml]
entityId = splunkEntityId
fqdn = http://khal
idpSLOUrl = https://idp.cloud.imprivata.com/BOE/saml2/slo/post
idpSSOUrl = https://idp.cloud.imprivata.com/BOE/saml2/sso/post
inboundSignatureAlgorithm = RSA-SHA1;RSA-SHA256
issuerId = https://idp.cloud.imprivata.com/BOE/saml2
redirectPort = 8000
replicateCertificates = true
signAuthnRequest = true
signatureAlgorithm = RSA-SHA256
signedAssertion = true
sloBinding = HTTP-POST
sslKeysfile = /opt/splunk/etc/auth/server.pem
sslKeysfilePassword = $7$3creInbv0FSAruNBlecI/Ax+eJmCOy2kaKaGi/AYzwNChCylHgv/cQ==
ssoBinding = HTTP-POST
Environment:
OS: 18.04.1-Ubuntu.
Splunk Enterprise: splunk-7.3.3-7af3758d0d5e-linux-2.6-amd64 and splunk-8.0.0-1357bef0a7f6-linux-2.6-amd64
P.S: We are using self signed certificates, so answer in https://answers.splunk.com/answers/543221/problem-with-saml-cert-error-uisaml-verification-o.html doesn't apply.
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