Backporting algorithm tightening may make sense, but I don't want to end up in a situation where users are trying to deal with interoperability issues but none of the upstream docs make sense. If we're advocating specific changes that upstream aren't currently already considering, we should take that up with upstream.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to openssh in Ubuntu. https://bugs.launchpad.net/bugs/1499392 Title: OpenSSH Security and SHA1 Status in openssh package in Ubuntu: Confirmed Bug description: We should enhance Security by disabling SHA1 or, if not possible (older Clients) by changing the KexAlgorithms, Ciphers and MACs order. For e.g. by : 1. If we add Support for older Clients we should change this: #### OpenSSH Security #### KexAlgorithms [email protected],diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1 Ciphers [email protected],[email protected],[email protected],aes256-ctr,aes192-ctr,aes128-ctr MACs [email protected],[email protected],[email protected],[email protected],hmac-sha2-512,hmac-sha2-256,hmac-ripemd160,[email protected] 2. If we just Support new Clients we should change this : [...] HostKey /etc/ssh/ssh_host_rsa_key HostKey /etc/ssh/ssh_host_ed25519_key [...] #### OpenSSH Security #### KexAlgorithms [email protected],diffie-hellman-group-exchange-sha256 Ciphers [email protected],[email protected],[email protected],aes256-ctr,aes192-ctr,aes128-ctr MACs [email protected],[email protected],[email protected],[email protected],hmac-sha2-512,hmac-sha2-256,hmac-ripemd160,[email protected] For more Information about my report go here: https://github.com/scaleway/image-ubuntu/pull/35 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1499392/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
