diff options
Diffstat (limited to 'sshconnect.c')
| -rw-r--r-- | sshconnect.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/sshconnect.c b/sshconnect.c index b6781261..0fca52b2 100644 --- a/sshconnect.c +++ b/sshconnect.c @@ -1,4 +1,4 @@ -/* $OpenBSD: sshconnect.c,v 1.359 2022/10/24 22:43:36 djm Exp $ */ +/* $OpenBSD: sshconnect.c,v 1.360 2022/11/03 21:59:20 djm Exp $ */ /* * Author: Tatu Ylonen <ylo@cs.hut.fi> * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland @@ -961,6 +961,17 @@ check_host_key(char *hostname, const struct ssh_conn_info *cinfo, } /* + * Don't ever try to write an invalid name to a known hosts file. + * Note: do this before get_hostfile_hostname_ipaddr() to catch + * '[' or ']' in the name before they are added. + */ + if (strcspn(hostname, "@?*#[]|'\'\"\\") != strlen(hostname)) { + debug_f("invalid hostname \"%s\"; will not record: %s", + hostname, fail_reason); + readonly = RDONLY; + } + + /* * Prepare the hostname and address strings used for hostkey lookup. * In some cases, these will have a port number appended. */ @@ -1018,13 +1029,6 @@ check_host_key(char *hostname, const struct ssh_conn_info *cinfo, (host_found != NULL && host_found->note != 0))) readonly = RDONLY; - /* Don't ever try to write an invalid name to a known hosts file */ - if (!valid_domain(hostname, 0, &fail_reason)) { - debug_f("invalid hostname \"%s\"; will not record: %s", - hostname, fail_reason); - readonly = RDONLY; - } - /* * Also perform check for the ip address, skip the check if we are * localhost, looking for a certificate, or the hostname was an ip |