diff options
Diffstat (limited to 'sshconnect.c')
| -rw-r--r-- | sshconnect.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/sshconnect.c b/sshconnect.c index 7b3f260ee..b67812610 100644 --- a/sshconnect.c +++ b/sshconnect.c @@ -1,4 +1,4 @@ -/* $OpenBSD: sshconnect.c,v 1.358 2022/08/26 08:16:27 djm Exp $ */ +/* $OpenBSD: sshconnect.c,v 1.359 2022/10/24 22:43:36 djm Exp $ */ /* * Author: Tatu Ylonen <ylo@cs.hut.fi> * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland @@ -935,7 +935,7 @@ check_host_key(char *hostname, const struct ssh_conn_info *cinfo, char *ip = NULL, *host = NULL; char hostline[1000], *hostp, *fp, *ra; char msg[1024]; - const char *type, *fail_reason; + const char *type, *fail_reason = NULL; const struct hostkey_entry *host_found = NULL, *ip_found = NULL; int len, cancelled_forwarding = 0, confirmed; int local = sockaddr_is_local(hostaddr); @@ -1018,6 +1018,13 @@ 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 |