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  1. Jenkins
  2. JENKINS-72372

Gerrit Trigger fails to connect Gerrit 2.11.3 - com.jcraft.jsch.JSchAlgoNegoFailException: Algorithm negotiation fail...serverProposal="diffie-hellman-group14-sha1,diffie-hellman-group1-sha1"

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    • Icon: Bug Bug
    • Resolution: Unresolved
    • Icon: Major Major
    • gerrit-trigger-plugin, jsch-plugin
    • None
    • jenkins2.414.1
      jsch 0.28
      gerrit trigger 2.39.3
      gerrit 2.11.3

      Gerrit Trigger fails to connect Gerrit 2.11.3

      Connection error : com.jcraft.jsch.JSchAlgoNegoFailException: Algorithm negotiation fail: algorithmName="kex" jschProposal="curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256,ext-info-c" serverProposal="diffie-hellman-group14-sha1,diffie-hellman-group1-sha1"

          [JENKINS-72372] Gerrit Trigger fails to connect Gerrit 2.11.3 - com.jcraft.jsch.JSchAlgoNegoFailException: Algorithm negotiation fail...serverProposal="diffie-hellman-group14-sha1,diffie-hellman-group1-sha1"

          wang added a comment - - edited

          I have added the following configuration to JAVA_OPT, but it seems to doesn't work.
          -Djsch.client_pubkey="ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,rsa-sha2-512,rsa-sha2-256,ssh-rsa"-Djsch.server_host_key="ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,rsa-sha2-512,rsa-sha2-256,ssh-rsa"

          wang added a comment - - edited I have added the following configuration to JAVA_OPT, but it seems to doesn't work. -Djsch.client_pubkey="ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,rsa-sha2-512,rsa-sha2-256,ssh-rsa"-Djsch.server_host_key="ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,rsa-sha2-512,rsa-sha2-256,ssh-rsa"

          Markus Winter added a comment -

          gerrit 2.11.3 is over 8 years old. It uses outdated algorithms that are considered insecure. You should look into upgrading gerrit to a recent version

          Markus Winter added a comment - gerrit 2.11.3 is over 8 years old. It uses outdated algorithms that are considered insecure. You should look into upgrading gerrit to a recent version

          Felipe Santos added a comment -

          This issue can probably be closed as duplicate of https://issues.jenkins.io/browse/JENKINS-71273.

          Felipe Santos added a comment - This issue can probably be closed as duplicate of https://issues.jenkins.io/browse/JENKINS-71273 .

            rsandell rsandell
            captain wang
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              Created:
              Updated: