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Cover image for Fix Let’s Encrypt Root Certificate DST Root CA X3 expired (OpenSSL 1.0.2)
Lorenzo Garuti
Lorenzo Garuti

Posted on • Updated on • Originally published at garutilorenzo.github.io

Fix Let’s Encrypt Root Certificate DST Root CA X3 expired (OpenSSL 1.0.2)

letsencrypt

If you are experiencing problems reaching https sites with let's encrypt certificate try to check your CA cert trusted bundles.
On most linux distributions there is a package named ca-certificates, this package provide the CA cert trusted bundles.

The cert bundles are under /etc/ssl/certs directory.

To solve the problem with DST Root CA X3 certificate you can:

  • try to check if there is a new version of the ca-certificates package
  • remove/blacklist the DST Root CA X3

To remove/blacklist the DST Root CA X3:

  • ubuntu:
    • sudo rm /usr/share/ca-certificates/mozilla/DST_Root_CA_X3.crt
    • sudo update-ca-certificates
  • centos/redhat:
    • vim /etc/pki/ca-trust/source/blacklist/X3.crt
    • paste the content of DST Root CA X3 (**DST Root CA X3 )
    • update-ca-trust

***DST Root CA X3*

# DST Root CA X3 (expired)
-----BEGIN TRUSTED CERTIFICATE-----
MIIDSjCCAjKgAwIBAgIQRK+wgNajJ7qJMDmGLvhAazANBgkqhkiG9w0BAQUFADA/
MSQwIgYDVQQKExtEaWdpdGFsIFNpZ25hdHVyZSBUcnVzdCBDby4xFzAVBgNVBAMT
DkRTVCBSb290IENBIFgzMB4XDTAwMDkzMDIxMTIxOVoXDTIxMDkzMDE0MDExNVow
PzEkMCIGA1UEChMbRGlnaXRhbCBTaWduYXR1cmUgVHJ1c3QgQ28uMRcwFQYDVQQD
Ew5EU1QgUm9vdCBDQSBYMzCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEB
AN+v6ZdQCINXtMxiZfaQguzH0yxrMMpb7NnDfcdAwRgUi+DoM3ZJKuM/IUmTrE4O
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ikugdB/OEIKcdBodfpga3csTS7MgROSR6cz8faXbauX+5v3gTt23ADq1cEmv8uXr
AvHRAosZy5Q6XkjEGB5YGV8eAlrwDPGxrancWYaLbumR9YbK+rlmM6pZW87ipxZz
R8srzJmwN0jP41ZL9c8PDHIyh8bwRLtTcm1D9SZImlJnt1ir/md2cXjbDaJWFBM5
JDGFoqgCWjBH4d1QB7wCCZAA62RjYJsWvIjJEubSfZGL+T0yjWW06XyxV3bqxbYo
Ob8VZRzI9neWagqNdwvYkQsEjgfbKbYK7p2CNTUQMBwwCgYIKwYBBQUHAwEMDkRT
VCBSb290IENBIFgz
-----END TRUSTED CERTIFICATE-----
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