Firefox 38 And Older TLS Sites

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All,

Red Hat released the source code for Firefox 38. We have (or willbe today) releasing this for CentOS-5, CentOS-6, and CentOS-7.

It does not, by default, connect to https sites with TLS less than 1.2. This means it will not connect to sites on CentOS-5, for example .. there are many others.

In any event, here is a wiki article that explains potential issues and workarounds:

http://wiki.CentOS.org/TipsAndTricks/Firefox38onCentOS

Thanks, Johnny Hughes

8 thoughts on - Firefox 38 And Older TLS Sites

  • Hi Johnny,

    My reading of https://access.redhat.com/node/1422403 is Firefox 38 will connect to sites using TLS 1.0 and 1.1. But ONLY if the server correctly negotiates the connection. This should only effect sites that close the initial connection due to not understanding TLS 1.2.

    A quick test connecting to a RHEL5 server over HTTPS with Firefox 38
    shows it has established a TLS 1.0 connection so this should not really effect CentOS 5.

    Tris

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  • Am 13.05.2015 um 13:57 schrieb Tris Hoar :

    I can establish a TLS1.0 connection between current EL6 with FF 38 and current EL5 with mod_ssl/httpd.

  • You are correct, it will not automatically negotiate a downgrade only. Thank goodness. Still will impact a lot of sites, but not all non TLS 1.2.

    Thanks, Johnny Hughes

  • Hey Johnny,

    firefox seems not to have multilanguage support anymore. After the update my firefox turned from german to english.

    Regards Tim

    Am 13.05.2015 um 12:12 schrieb Johnny Hughes:

  • Thank you. I can live with this as long multilanguage support will come back.

    Tim

    Am 13.05.2015 um 23:04 schrieb Akemi Yagi:

  • This type of response to the list is unacceptable, and will result in moderation or removal from the list if it continues.