Package: openssh-client Version: 1:6.7p1-3 Severity: normal Given an user ssh_config (~/.ssh/config) like this:
1 Host server*.example.com 2 User name 3 Port 1234 4 5 Host * 6 CanonicalizeHostname yes 7 CanonicalDomains example.com 8 CanonicalizeMaxDots 0 9 CanonicalizeFallbackLocal yes 10 ControlMaster auto 11 ControlPath /tmp/ssh_mux_%h_%p_%r 12 ControlPersist 1h Then run ``ssh -v server0``, here is the output: 1 OpenSSH_6.7p1 Debian-3, OpenSSL 1.0.1j 15 Oct 2014 2 debug1: Reading configuration data <home>/.ssh/config 3 debug1: <home>/.ssh/config line 5: Applying options for * 4 debug1: Reading configuration data /etc/ssh/ssh_config 5 debug1: /etc/ssh/ssh_config line 19: Applying options for * 6 debug1: Canonicalized hostname "server0" => "server0.example.com" 7 debug1: Hostname has changed; re-reading configuration 8 debug1: Reading configuration data <home>/.ssh/config 9 debug1: <home>/.ssh/config line 1: Applying options for server*.example.com 10 debug1: <home>/.ssh/config line 5: Applying options for * 11 debug1: Reading configuration data /etc/ssh/ssh_config 12 debug1: /etc/ssh/ssh_config line 19: Applying options for * 13 debug1: auto-mux: Trying existing master 14 debug1: Control socket "/tmp/ssh_mux_server0.example.com_1234_name" does not exist 15 debug1: Connecting to server0.example.com [127.0.0.1] port 22. 16 debug1: connect to address 127.0.0.1 port 22: Connection refused 17 ssh: connect to host server0.example.com port 22: Connection refused As you can see, ssh didn't use the specified port 1234, but the default port 22 to connect, while when creating ControlPath socket, it uses the given port. I have scanned the source code, and believe I have found the cause, but I don't know how to fix it nicely. So I just give my description to it. The source code is fetched with ``apt-get source openssh-client``. In ssh.c, the procedure is like this: * line 902, process_config_files(pw), now options.port is not set, since no config block with ``Port`` option is matched. * line 919, addrs = resolve_canonicalize(&host, options.port), now, port in ``addrs`` is default_ssh_port() * line 948-954, the target hostname has changed, so config files re-parsed. now, options.port is set to 1234 * line 1037-1052, expand control_path, %p is expanded to portstr(assigned in line 1007), which is 1234 * line 1073, ssh_connect(host, addrs, &hostaddr, options.port, ...), in ssh_connect() function, however, the ``options.port`` is not used, but directly use address info from ``addrs``, so ssh_connect actually uses port 22. Following this procedure, whenever "CanonicalizeHostname" is enabled, ``Port`` may not be handled as expected in ssh_config file. -- System Information: Debian Release: 8.0 APT prefers unstable APT policy: (500, 'unstable') Architecture: amd64 (x86_64) Kernel: Linux 3.16.0-4-amd64 (SMP w/8 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages openssh-client depends on: ii adduser 3.113+nmu3 ii dpkg 1.17.22 ii libc6 2.19-13 ii libedit2 3.1-20140620-2 ii libgssapi-krb5-2 1.12.1+dfsg-16 ii libselinux1 2.3-2 ii libssl1.0.0 1.0.1j-1 ii passwd 1:4.2-3 ii zlib1g 1:1.2.8.dfsg-2+b1 Versions of packages openssh-client recommends: ii xauth 1:1.0.9-1 Versions of packages openssh-client suggests: pn keychain <none> pn libpam-ssh <none> pn monkeysphere <none> pn ssh-askpass <none> -- no debconf information -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
