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-rw-r--r--servconf.c39
1 files changed, 29 insertions, 10 deletions
diff --git a/servconf.c b/servconf.c
index df93fc450e85..6c7a91e6b22f 100644
--- a/servconf.c
+++ b/servconf.c
@@ -1,4 +1,5 @@
-/* $OpenBSD: servconf.c,v 1.274 2015/07/01 02:32:17 djm Exp $ */
+
+/* $OpenBSD: servconf.c,v 1.280 2015/08/06 14:53:21 deraadt Exp $ */
/*
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
* All rights reserved
@@ -107,6 +108,7 @@ initialize_server_options(ServerOptions *options)
options->hostbased_authentication = -1;
options->hostbased_uses_name_from_packet_only = -1;
options->hostbased_key_types = NULL;
+ options->hostkeyalgorithms = NULL;
options->rsa_authentication = -1;
options->pubkey_authentication = -1;
options->pubkey_key_types = NULL;
@@ -222,7 +224,7 @@ fill_default_server_options(ServerOptions *options)
if (options->key_regeneration_time == -1)
options->key_regeneration_time = 3600;
if (options->permit_root_login == PERMIT_NOT_SET)
- options->permit_root_login = PERMIT_YES;
+ options->permit_root_login = PERMIT_NO_PASSWD;
if (options->ignore_rhosts == -1)
options->ignore_rhosts = 1;
if (options->ignore_user_known_hosts == -1)
@@ -257,14 +259,12 @@ fill_default_server_options(ServerOptions *options)
options->hostbased_authentication = 0;
if (options->hostbased_uses_name_from_packet_only == -1)
options->hostbased_uses_name_from_packet_only = 0;
- if (options->hostbased_key_types == NULL)
- options->hostbased_key_types = xstrdup("*");
+ if (options->hostkeyalgorithms == NULL)
+ options->hostkeyalgorithms = xstrdup(KEX_DEFAULT_PK_ALG);
if (options->rsa_authentication == -1)
options->rsa_authentication = 1;
if (options->pubkey_authentication == -1)
options->pubkey_authentication = 1;
- if (options->pubkey_key_types == NULL)
- options->pubkey_key_types = xstrdup("*");
if (options->kerberos_authentication == -1)
options->kerberos_authentication = 0;
if (options->kerberos_or_local_passwd == -1)
@@ -341,6 +341,16 @@ fill_default_server_options(ServerOptions *options)
options->fwd_opts.streamlocal_bind_unlink = 0;
if (options->fingerprint_hash == -1)
options->fingerprint_hash = SSH_FP_HASH_DEFAULT;
+
+ if (kex_assemble_names(KEX_SERVER_ENCRYPT, &options->ciphers) != 0 ||
+ kex_assemble_names(KEX_SERVER_MAC, &options->macs) != 0 ||
+ kex_assemble_names(KEX_SERVER_KEX, &options->kex_algorithms) != 0 ||
+ kex_assemble_names(KEX_DEFAULT_PK_ALG,
+ &options->hostbased_key_types) != 0 ||
+ kex_assemble_names(KEX_DEFAULT_PK_ALG,
+ &options->pubkey_key_types) != 0)
+ fatal("%s: kex_assemble_names failed", __func__);
+
/* Turn privilege separation on by default */
if (use_privsep == -1)
use_privsep = PRIVSEP_NOSANDBOX;
@@ -399,6 +409,7 @@ typedef enum {
sXAuthLocation, sSubsystem, sMaxStartups, sMaxAuthTries, sMaxSessions,
sBanner, sUseDNS, sHostbasedAuthentication,
sHostbasedUsesNameFromPacketOnly, sHostbasedAcceptedKeyTypes,
+ sHostKeyAlgorithms,
sClientAliveInterval, sClientAliveCountMax, sAuthorizedKeysFile,
sGssAuthentication, sGssCleanupCreds, sGssStrictAcceptor,
sAcceptEnv, sPermitTunnel,
@@ -449,6 +460,7 @@ static struct {
{ "hostbasedauthentication", sHostbasedAuthentication, SSHCFG_ALL },
{ "hostbasedusesnamefrompacketonly", sHostbasedUsesNameFromPacketOnly, SSHCFG_ALL },
{ "hostbasedacceptedkeytypes", sHostbasedAcceptedKeyTypes, SSHCFG_ALL },
+ { "hostkeyalgorithms", sHostKeyAlgorithms, SSHCFG_GLOBAL },
{ "rsaauthentication", sRSAAuthentication, SSHCFG_ALL },
{ "pubkeyauthentication", sPubkeyAuthentication, SSHCFG_ALL },
{ "pubkeyacceptedkeytypes", sPubkeyAcceptedKeyTypes, SSHCFG_ALL },
@@ -904,6 +916,7 @@ static const struct multistate multistate_addressfamily[] = {
};
static const struct multistate multistate_permitrootlogin[] = {
{ "without-password", PERMIT_NO_PASSWD },
+ { "prohibit-password", PERMIT_NO_PASSWD },
{ "forced-commands-only", PERMIT_FORCED_ONLY },
{ "yes", PERMIT_YES },
{ "no", PERMIT_NO },
@@ -1175,13 +1188,17 @@ process_server_config_line(ServerOptions *options, char *line,
if (!arg || *arg == '\0')
fatal("%s line %d: Missing argument.",
filename, linenum);
- if (!sshkey_names_valid2(arg, 1))
+ if (!sshkey_names_valid2(*arg == '+' ? arg + 1 : arg, 1))
fatal("%s line %d: Bad key types '%s'.",
filename, linenum, arg ? arg : "<NONE>");
if (*activep && *charptr == NULL)
*charptr = xstrdup(arg);
break;
+ case sHostKeyAlgorithms:
+ charptr = &options->hostkeyalgorithms;
+ goto parse_keytypes;
+
case sRSAAuthentication:
intptr = &options->rsa_authentication;
goto parse_flag;
@@ -1424,7 +1441,7 @@ process_server_config_line(ServerOptions *options, char *line,
arg = strdelim(&cp);
if (!arg || *arg == '\0')
fatal("%s line %d: Missing argument.", filename, linenum);
- if (!ciphers_valid(arg))
+ if (!ciphers_valid(*arg == '+' ? arg + 1 : arg))
fatal("%s line %d: Bad SSH2 cipher spec '%s'.",
filename, linenum, arg ? arg : "<NONE>");
if (options->ciphers == NULL)
@@ -1435,7 +1452,7 @@ process_server_config_line(ServerOptions *options, char *line,
arg = strdelim(&cp);
if (!arg || *arg == '\0')
fatal("%s line %d: Missing argument.", filename, linenum);
- if (!mac_valid(arg))
+ if (!mac_valid(*arg == '+' ? arg + 1 : arg))
fatal("%s line %d: Bad SSH2 mac spec '%s'.",
filename, linenum, arg ? arg : "<NONE>");
if (options->macs == NULL)
@@ -1447,7 +1464,7 @@ process_server_config_line(ServerOptions *options, char *line,
if (!arg || *arg == '\0')
fatal("%s line %d: Missing argument.",
filename, linenum);
- if (!kex_names_valid(arg))
+ if (!kex_names_valid(*arg == '+' ? arg + 1 : arg))
fatal("%s line %d: Bad SSH2 KexAlgorithms '%s'.",
filename, linenum, arg ? arg : "<NONE>");
if (options->kex_algorithms == NULL)
@@ -2279,6 +2296,8 @@ dump_config(ServerOptions *o)
o->kex_algorithms ? o->kex_algorithms : KEX_SERVER_KEX);
dump_cfg_string(sHostbasedAcceptedKeyTypes, o->hostbased_key_types ?
o->hostbased_key_types : KEX_DEFAULT_PK_ALG);
+ dump_cfg_string(sHostKeyAlgorithms, o->hostkeyalgorithms ?
+ o->hostkeyalgorithms : KEX_DEFAULT_PK_ALG);
dump_cfg_string(sPubkeyAcceptedKeyTypes, o->pubkey_key_types ?
o->pubkey_key_types : KEX_DEFAULT_PK_ALG);
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-02 06:17:22 +0000