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    [INFO] Critical denial of service vulnerability in OpenVPN servers

    Scheduled Pinned Locked Moved OpenVPN
    16 Posts 7 Posters 3.3k Views
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    • jimpJ
      jimp Rebel Alliance Developer Netgate
      last edited by

      No, not a "public" VPN server as in one open to the world. A "public" VPN server like PIA, VyprVPN, and so on that accepts public clients where anyone can get a certificate and authenticate.

      If it's a private VPN for just you or a company or so on and you don't hand out certs like candy, then you're fine.

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      • K
        kejianshi
        last edited by

        Hmmmm.  Seems like upgrading will be smart for me.  Thanks.
        Any other changes getting into 2.3.6?

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        • jimpJ
          jimp Rebel Alliance Developer Netgate
          last edited by

          Not sure what all changed in OpenVPN 2.3.6, the OpenVPN site should have a changelog.

          Since this is a DoS ONLY and NOT one that could lead to information disclosure, if someone is worried about their VPN server dying the Service Watchdog package could help. It would restart the VPN server if it is down.

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          • J
            Jamerson
            last edited by

            hi guys a questiions,
            is this update requested from the Pfsense side or the client side ?
            thank you

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            • jimpJ
              jimp Rebel Alliance Developer Netgate
              last edited by

              The server side is the one that really needs updated to fix the potential DoS.

              Though the client export package has the new 2.3.6 installers already, you can update those as needed as well.

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              • J
                Jamerson
                last edited by

                @jimp:

                The server side is the one that really needs updated to fix the potential DoS.

                Though the client export package has the new 2.3.6 installers already, you can update those as needed as well.

                i've checked the latest Openvpn client export on the Pfsense it shows version of 1.2.15 as attached picture.
                is this the latest  version of Pfsense ?

                external users are updated to 2.3.6 version

                thanks

                ![Pfsense -openvpn.jpg](/public/imported_attachments/1/Pfsense -openvpn.jpg)
                ![Pfsense -openvpn.jpg_thumb](/public/imported_attachments/1/Pfsense -openvpn.jpg_thumb)

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                • jimpJ
                  jimp Rebel Alliance Developer Netgate
                  last edited by

                  That is the version of the export package. That version of the export package does include the OpenVPN 2.3.6 installers.

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                  • K
                    kejianshi
                    last edited by

                    Its too bad that the current stable version of pfsense won't get a minor maintenance release for this… 
                    I'm not sure how far out the stable release of 2.2 is.

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                    • jimpJ
                      jimp Rebel Alliance Developer Netgate
                      last edited by

                      2.2 RC should be out by the end of the day tomorrow. Release won't be that far behind given the current bug list and what's left to do.

                      To put out a 2.1.x release we would have to bring 2.2 development to a complete halt and focus on backporting and testing things in 2.1.x again. It's not worth the effort for this with 2.2 so close.

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                      • K
                        kejianshi
                        last edited by

                        Cool.  I wasn't expecting a release in the next 6 months.  I'm used to beta staying beta for a good long while.

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                        • P
                          phil.davis
                          last edited by

                          I'm with jimp - the 2.2-BETA really has got out all the bugs I can think of in the parts I use. I also think that 2.2-RC will not need to live for long before an official release.

                          As the Greek philosopher Isosceles used to say, "There are 3 sides to every triangle."
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