Are you sure you are in ubuntu 14.04.5? Trusty's latest apache2 is 2.4.7-1ubuntu4.20
I assume you meant xenial, which does have 2.4.18-2ubuntu3.8 in security but has 3.9 in updates. 3.8 has security fixes around "nonce generation": * SECURITY UPDATE: insecure nonce generation - debian/patches/CVE-2018-1312.patch: actually use the secret when generating nonces in modules/aaa/mod_auth_digest.c. - CVE-2018-1312 ** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-1312 -- You received this bug notification because you are a member of Ubuntu Server, which is subscribed to apache2 in Ubuntu. https://bugs.launchpad.net/bugs/1790430 Title: None issues with auth_digest when running behind an reverse proxy To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apache2/+bug/1790430/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs