>Number:         17440
>Category:       bin
>Synopsis:       ssh doesn't work: servname not supported for ai_socktype
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Jun 30 06:17:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Ben Harris
>Release:        1.6_BETA4
>Organization:
>Environment:
NetBSD/acorn32, autobuilt RPC_WSCONS kernel:
NetBSD 1.6_BETA4 (RPC_WSCONS) #0: Sun Jun 30 10:27:36 UTC 2002
    autobuild@tgm.daemon.org:/autobuild/acorn32/OBJ/autobuild/src/sys/arch/acorn32/compile/RPC_WSCONS

>Description:
Attempting to make any ssh connection fails with:
ssh: <hostname>: servname not supported for ai_socktype

breakpointing getaddrinfo() shows that ssh is passing a port of "1441814"
which unsurprisingly fails.  This is 0x160016, which seems to come about
from a call to snprintf from sshconnect.c::ssh_connect() where a u_short
is used as an argument for a %u format:

ssh_connect(const char *host, struct sockaddr_storage * hostaddr,
    u_short port, int family, int connection_attempts,
    int needpriv, const char *proxy_command)
{
[...]
        snprintf(strport, sizeof strport, "%u", port);

>How-To-Repeat:
southeast-iceland# ssh cvs.netbsd.org
ssh: cvs.netbsd.org: servname not supported for ai_socktype

/etc/ssh/ssh_config contains only comments, ~/.ssh is missing.
nsswitch.conf contains:

group:          compat
group_compat:   nis
hosts:          files dns
netgroup:       files [notfound=return] nis
networks:       files
passwd:         compat
passwd_compat:  nis
shells:         files

resolv.conf contains:

search 11md.local.
nameserver 172.17.11.61

/etc/hosts contains:

::1                     localhost
127.0.0.1               localhost

>Fix:
Probably cast the port to "unsigned int" before passing it to snprintf().

>Release-Note:
>Audit-Trail:
>Unformatted: