Segmentation Fault Issue in FreeRADIUS v3.2.5

15 Jan 2025

      Hi!

I hope this message finds you well.

I am writing to report a critical issue we have encountered with FreeRADIUS v3.2.5. When the home server does not respond and a proxy request to the user fails, it results in a segmentation fault.

To reproduce the issue, please add the following configuration:

==========================================================================
radiusd.conf:
client redundant-2 {
    ipaddr = "192.168.1.216"
    secret = "testing1234"
}
==========================================================================
sites-enabled/redundant-radrelay-2:
home_server redundant-2-server {
    type = acct
    ipaddr = 192.168.1.216
    port = 1813
    secret = "testing5678"
    status_check = status-server
    response_window = 5
    response_timeouts = 1
    zombie_period = 20
}

home_server_pool redundant-2-pool {
    home_server = redundant-2-server
}

realm redundant-2 {
    acct_pool = redundant-2-pool
}

server redundant-2-server {
    listen {
        type = detail
        filename = /var/data/redundant2/detail
        load_factor = 30
        track = yes
        unlink_work_detail_keep_limit = 1000
    }
    accounting {
        update control {
            Proxy-To-Realm := "redundant-2"
        }
    }
}
==========================================================================
mods-enabled/redundant:
detail detail_redundant2 {
    filename = /var/data/redundant2/detail
    permissions = 0600
    locking = yes
    detail_size_limit = 1048576
    detail_keep_limit_for_size = 1010
}
==========================================================================

When the RADIUS service is started and an Accounting Start packet is received, it results in a segmentation fault.

It appears that the segmentation fault occurs due to a failure to access "request->packet->code" at the following commit:
https://github.com/FreeRADIUS/freeradius-server/commit/67e58e67f7ba0efaa73cf...

Please find the debug log below for your reference:

==========================================================================
freeradius thayakawa% sudo /usr/local/sbin/radiusd -X
FreeRADIUS Version 3.2.5
Copyright (C) 1999-2023 The FreeRADIUS server project and contributors
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE
You may redistribute copies of FreeRADIUS under the terms of the
GNU General Public License
For more information about these matters, see the file named COPYRIGHT
Starting - reading configuration files ...
including dictionary file /usr/local/share/freeradius/dictionary
including dictionary file /usr/local/share/freeradius/dictionary.dhcp
including dictionary file /usr/local/share/freeradius/dictionary.vqp
including dictionary file /usr/local/etc/raddb/dictionary
including configuration file /usr/local/etc/raddb/radiusd.conf
including configuration file /usr/local/etc/raddb/proxy.conf
including configuration file /usr/local/etc/raddb/clients.conf
including files in directory /usr/local/etc/raddb/mods-enabled/
including configuration file /usr/local/etc/raddb/mods-enabled/expr
including configuration file /usr/local/etc/raddb/mods-enabled/attr_filter
including configuration file /usr/local/etc/raddb/mods-enabled/preprocess
including configuration file /usr/local/etc/raddb/mods-enabled/linelog
including configuration file /usr/local/etc/raddb/mods-enabled/redundant
including configuration file /usr/local/etc/raddb/mods-enabled/sradutmp
including configuration file /usr/local/etc/raddb/mods-enabled/replicate
including configuration file /usr/local/etc/raddb/mods-enabled/passwd
including configuration file /usr/local/etc/raddb/mods-enabled/detail.log
including configuration file /usr/local/etc/raddb/mods-enabled/radutmp
including configuration file /usr/local/etc/raddb/mods-enabled/unix
including configuration file /usr/local/etc/raddb/mods-enabled/digest
including configuration file /usr/local/etc/raddb/mods-enabled/always
including configuration file /usr/local/etc/raddb/mods-enabled/ntlm_auth
including configuration file /usr/local/etc/raddb/mods-enabled/realm
including configuration file /usr/local/etc/raddb/mods-enabled/cache_eap
including configuration file /usr/local/etc/raddb/mods-enabled/unpack
including configuration file /usr/local/etc/raddb/mods-enabled/echo
including configuration file /usr/local/etc/raddb/mods-enabled/detail
including configuration file /usr/local/etc/raddb/mods-enabled/dynamic_clients
including configuration file /usr/local/etc/raddb/mods-enabled/files
including configuration file /usr/local/etc/raddb/mods-enabled/chap
including configuration file /usr/local/etc/raddb/mods-enabled/logintime
including configuration file /usr/local/etc/raddb/mods-enabled/pap
including configuration file /usr/local/etc/raddb/mods-enabled/eap
including configuration file /usr/local/etc/raddb/mods-enabled/mschap
including configuration file /usr/local/etc/raddb/mods-enabled/expiration
including configuration file /usr/local/etc/raddb/mods-enabled/soh
including configuration file /usr/local/etc/raddb/mods-enabled/date
including configuration file /usr/local/etc/raddb/mods-enabled/utf8
including configuration file /usr/local/etc/raddb/mods-enabled/exec
including files in directory /usr/local/etc/raddb/policy.d/
including configuration file /usr/local/etc/raddb/policy.d/control
including configuration file /usr/local/etc/raddb/policy.d/filter
including configuration file /usr/local/etc/raddb/policy.d/canonicalization
including configuration file /usr/local/etc/raddb/policy.d/moonshot-targeted-ids
including configuration file /usr/local/etc/raddb/policy.d/operator-name
including configuration file /usr/local/etc/raddb/policy.d/cui
including configuration file /usr/local/etc/raddb/policy.d/dhcp
including configuration file /usr/local/etc/raddb/policy.d/debug
including configuration file /usr/local/etc/raddb/policy.d/abfab-tr
including configuration file /usr/local/etc/raddb/policy.d/eap
including configuration file /usr/local/etc/raddb/policy.d/rfc7542
including configuration file /usr/local/etc/raddb/policy.d/accounting
including files in directory /usr/local/etc/raddb/sites-enabled/
including configuration file /usr/local/etc/raddb/sites-enabled/default
including configuration file /usr/local/etc/raddb/sites-enabled/redundant-radrelay-2
including configuration file /usr/local/etc/raddb/sites-enabled/inner-tunnel
main {
 security {
 	allow_core_dumps = no
 }
	name = "radiusd"
	prefix = "/usr/local"
	localstatedir = "/usr/local/var"
	logdir = "/usr/local/var/log/radius"
	run_dir = "/usr/local/var/run/radiusd"
}
main {
	name = "radiusd"
	prefix = "/usr/local"
	localstatedir = "/usr/local/var"
	sbindir = "/usr/local/sbin"
	logdir = "/usr/local/var/log/radius"
	run_dir = "/usr/local/var/run/radiusd"
	libdir = "/usr/local/lib"
	radacctdir = "/usr/local/var/log/radius/radacct"
	hostname_lookups = no
	max_request_time = 30
	proxy_dedup_window = 1
	cleanup_delay = 5
	max_requests = 16384
	max_fds = 512
	postauth_client_lost = no
	pidfile = "/usr/local/var/run/radiusd/radiusd.pid"
	checkrad = "/usr/local/sbin/checkrad"
	debug_level = 0
	proxy_requests = yes
 log {
 	stripped_names = no
 	auth = no
 	auth_badpass = no
 	auth_goodpass = no
 	colourise = yes
 	msg_denied = "You are already logged in - access denied"
 }
 resources {
 }
 security {
 	max_attributes = 200
 	reject_delay = 1.000000
 	status_server = yes
 	require_message_authenticator = "auto"
 	limit_proxy_state = "auto"
 	allow_vulnerable_openssl = "no"
 }
}
radiusd: #### Loading Realms and Home Servers ####
 proxy server {
 	retry_delay = 5
 	retry_count = 3
 	default_fallback = no
 	dead_time = 120
 	wake_all_if_all_dead = no
 }
 home_server localhost {
 	nonblock = no
 	ipaddr = 127.0.0.1
 	port = 1812
 	type = "auth"
 	secret = <<< secret >>>
 	response_window = 20.000000
 	response_timeouts = 1
 	max_outstanding = 65536
 	zombie_period = 40
 	status_check = "status-server"
 	ping_interval = 30
 	check_interval = 30
 	check_timeout = 4
 	num_answers_to_alive = 3
 	revive_interval = 120
  limit {
  	max_connections = 16
  	max_requests = 0
  	lifetime = 0
  	idle_timeout = 0
  }
  coa {
  	irt = 2
  	mrt = 16
  	mrc = 5
  	mrd = 30
  }
 }
 home_server redundant-2-server {
 	nonblock = no
 	ipaddr = 192.168.1.216
 	port = 1813
 	type = "acct"
 	secret = <<< secret >>>
 	response_window = 5.000000
 	response_timeouts = 1
 	max_outstanding = 65536
 	zombie_period = 20
 	status_check = "status-server"
 	ping_interval = 30
 	check_timeout = 4
 	num_answers_to_alive = 3
 	revive_interval = 300
  limit {
  	max_connections = 16
  	max_requests = 0
  	lifetime = 0
  	idle_timeout = 0
  }
  coa {
  	irt = 2
  	mrt = 16
  	mrc = 5
  	mrd = 30
  }
 }
 home_server_pool my_auth_failover {
	type = fail-over
	home_server = localhost
 }
 realm example.com {
	auth_pool = my_auth_failover
 }
 realm LOCAL {
 }
 home_server_pool redundant-2-pool {
	home_server = redundant-2-server
 }
 realm redundant-2 {
	acct_pool = redundant-2-pool
 }
radiusd: #### Loading Clients ####
 client localhost {
 	ipaddr = 127.0.0.1
 	require_message_authenticator = "no"
 	secret = <<< secret >>>
 	nas_type = "other"
 	proto = "*"
  limit {
  	max_connections = 16
  	lifetime = 0
  	idle_timeout = 30
  }
 }
 client localhost_ipv6 {
 	ipv6addr = ::1
 	secret = <<< secret >>>
  limit {
  	max_connections = 16
  	lifetime = 0
  	idle_timeout = 30
  }
 }
 client private-network {
 	ipaddr = 0.0.0.0/0
 	secret = <<< secret >>>
  limit {
  	max_connections = 16
  	lifetime = 0
  	idle_timeout = 30
  }
 }
 client redundant-2 {
 	ipaddr = 192.168.1.216
 	secret = <<< secret >>>
  limit {
  	max_connections = 16
  	lifetime = 0
  	idle_timeout = 30
  }
 }
Debugger not attached
 # Creating Auth-Type = mschap
 # Creating Auth-Type = digest
 # Creating Auth-Type = eap
 # Creating Auth-Type = PAP
 # Creating Auth-Type = CHAP
 # Creating Auth-Type = MS-CHAP
radiusd: #### Instantiating modules ####
 modules {
  # Loaded module rlm_expr
  # Loading module "expr" from file /usr/local/etc/raddb/mods-enabled/expr
  expr {
  	safe_characters = "@abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.-_: /aeouaaaceeeeiio?uuuayAEOUsAAACEEEEIIO?UUU?"
  }
  # Loaded module rlm_attr_filter
  # Loading module "attr_filter.post-proxy" from file /usr/local/etc/raddb/mods-enabled/attr_filter
  attr_filter attr_filter.post-proxy {
  	filename = "/usr/local/etc/raddb/mods-config/attr_filter/post-proxy"
  	key = "%{Realm}"
  	relaxed = no
  }
  # Loading module "attr_filter.pre-proxy" from file /usr/local/etc/raddb/mods-enabled/attr_filter
  attr_filter attr_filter.pre-proxy {
  	filename = "/usr/local/etc/raddb/mods-config/attr_filter/pre-proxy"
  	key = "%{Realm}"
  	relaxed = no
  }
  # Loading module "attr_filter.access_reject" from file /usr/local/etc/raddb/mods-enabled/attr_filter
  attr_filter attr_filter.access_reject {
  	filename = "/usr/local/etc/raddb/mods-config/attr_filter/access_reject"
  	key = "%{User-Name}"
  	relaxed = no
  }
  # Loading module "attr_filter.access_challenge" from file /usr/local/etc/raddb/mods-enabled/attr_filter
  attr_filter attr_filter.access_challenge {
  	filename = "/usr/local/etc/raddb/mods-config/attr_filter/access_challenge"
  	key = "%{User-Name}"
  	relaxed = no
  }
  # Loading module "attr_filter.accounting_response" from file /usr/local/etc/raddb/mods-enabled/attr_filter
  attr_filter attr_filter.accounting_response {
  	filename = "/usr/local/etc/raddb/mods-config/attr_filter/accounting_response"
  	key = "%{User-Name}"
  	relaxed = no
  }
  # Loaded module rlm_preprocess
  # Loading module "preprocess" from file /usr/local/etc/raddb/mods-enabled/preprocess
  preprocess {
  	huntgroups = "/usr/local/etc/raddb/mods-config/preprocess/huntgroups"
  	hints = "/usr/local/etc/raddb/mods-config/preprocess/hints"
  	with_ascend_hack = no
  	ascend_channels_per_line = 23
  	with_ntdomain_hack = no
  	with_specialix_jetstream_hack = no
  	with_cisco_vsa_hack = no
  	with_alvarion_vsa_hack = no
  }
  # Loaded module rlm_linelog
  # Loading module "linelog" from file /usr/local/etc/raddb/mods-enabled/linelog
  linelog {
  	filename = "/usr/local/var/log/radius/linelog"
  	escape_filenames = no
  	syslog_severity = "info"
  	permissions = 384
  	format = "This is a log message for %{User-Name}"
  	reference = "messages.%{%{reply:Packet-Type}:-default}"
  }
  # Loading module "log_accounting" from file /usr/local/etc/raddb/mods-enabled/linelog
  linelog log_accounting {
  	filename = "/usr/local/var/log/radius/linelog-accounting"
  	escape_filenames = no
  	syslog_severity = "info"
  	permissions = 384
  	format = ""
  	reference = "Accounting-Request.%{%{Acct-Status-Type}:-unknown}"
  }
  # Loaded module rlm_detail
  # Loading module "detail_redundant2" from file /usr/local/etc/raddb/mods-enabled/redundant
  detail detail_redundant2 {
  	filename = "/var/data/redundant2/detail"
  	header = "%t"
  	permissions = 384
  	locking = yes
  	dates_as_integer = no
  	escape_filenames = no
  	log_packet_header = no
  }
  # Loaded module rlm_radutmp
  # Loading module "sradutmp" from file /usr/local/etc/raddb/mods-enabled/sradutmp
  radutmp sradutmp {
  	filename = "/usr/local/var/log/radius/sradutmp"
  	username = "%{User-Name}"
  	case_sensitive = yes
  	check_with_nas = yes
  	permissions = 420
  	caller_id = no
  }
  # Loaded module rlm_replicate
  # Loading module "replicate" from file /usr/local/etc/raddb/mods-enabled/replicate
  # Loaded module rlm_passwd
  # Loading module "etc_passwd" from file /usr/local/etc/raddb/mods-enabled/passwd
  passwd etc_passwd {
  	filename = "/etc/passwd"
  	format = "*User-Name:Crypt-Password:"
  	delimiter = ":"
  	ignore_nislike = no
  	ignore_empty = yes
  	allow_multiple_keys = no
  	hash_size = 100
  }
  # Loading module "auth_log" from file /usr/local/etc/raddb/mods-enabled/detail.log
  detail auth_log {
  	filename = "/usr/local/var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/auth-detail-%Y%m%d"
  	header = "%t"
  	permissions = 384
  	locking = no
  	dates_as_integer = no
  	escape_filenames = no
  	log_packet_header = no
  }
  # Loading module "reply_log" from file /usr/local/etc/raddb/mods-enabled/detail.log
  detail reply_log {
  	filename = "/usr/local/var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/reply-detail-%Y%m%d"
  	header = "%t"
  	permissions = 384
  	locking = no
  	dates_as_integer = no
  	escape_filenames = no
  	log_packet_header = no
  }
  # Loading module "pre_proxy_log" from file /usr/local/etc/raddb/mods-enabled/detail.log
  detail pre_proxy_log {
  	filename = "/usr/local/var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/pre-proxy-detail-%Y%m%d"
  	header = "%t"
  	permissions = 384
  	locking = no
  	dates_as_integer = no
  	escape_filenames = no
  	log_packet_header = no
  }
  # Loading module "post_proxy_log" from file /usr/local/etc/raddb/mods-enabled/detail.log
  detail post_proxy_log {
  	filename = "/usr/local/var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/post-proxy-detail-%Y%m%d"
  	header = "%t"
  	permissions = 384
  	locking = no
  	dates_as_integer = no
  	escape_filenames = no
  	log_packet_header = no
  }
  # Loading module "radutmp" from file /usr/local/etc/raddb/mods-enabled/radutmp
  radutmp {
  	filename = "/usr/local/var/log/radius/radutmp"
  	username = "%{User-Name}"
  	case_sensitive = yes
  	check_with_nas = yes
  	permissions = 384
  	caller_id = yes
  }
  # Loaded module rlm_unix
  # Loading module "unix" from file /usr/local/etc/raddb/mods-enabled/unix
  unix {
  	radwtmp = "/usr/local/var/log/radius/radwtmp"
  }
Creating attribute Unix-Group
  # Loaded module rlm_digest
  # Loading module "digest" from file /usr/local/etc/raddb/mods-enabled/digest
  # Loaded module rlm_always
  # Loading module "reject" from file /usr/local/etc/raddb/mods-enabled/always
  always reject {
  	rcode = "reject"
  	simulcount = 0
  	mpp = no
  }
  # Loading module "fail" from file /usr/local/etc/raddb/mods-enabled/always
  always fail {
  	rcode = "fail"
  	simulcount = 0
  	mpp = no
  }
  # Loading module "ok" from file /usr/local/etc/raddb/mods-enabled/always
  always ok {
  	rcode = "ok"
  	simulcount = 0
  	mpp = no
  }
  # Loading module "handled" from file /usr/local/etc/raddb/mods-enabled/always
  always handled {
  	rcode = "handled"
  	simulcount = 0
  	mpp = no
  }
  # Loading module "invalid" from file /usr/local/etc/raddb/mods-enabled/always
  always invalid {
  	rcode = "invalid"
  	simulcount = 0
  	mpp = no
  }
  # Loading module "userlock" from file /usr/local/etc/raddb/mods-enabled/always
  always userlock {
  	rcode = "userlock"
  	simulcount = 0
  	mpp = no
  }
  # Loading module "notfound" from file /usr/local/etc/raddb/mods-enabled/always
  always notfound {
  	rcode = "notfound"
  	simulcount = 0
  	mpp = no
  }
  # Loading module "noop" from file /usr/local/etc/raddb/mods-enabled/always
  always noop {
  	rcode = "noop"
  	simulcount = 0
  	mpp = no
  }
  # Loading module "updated" from file /usr/local/etc/raddb/mods-enabled/always
  always updated {
  	rcode = "updated"
  	simulcount = 0
  	mpp = no
  }
  # Loaded module rlm_exec
  # Loading module "ntlm_auth" from file /usr/local/etc/raddb/mods-enabled/ntlm_auth
  exec ntlm_auth {
  	wait = yes
  	program = "/path/to/ntlm_auth --request-nt-key --domain=MYDOMAIN --username=%{mschap:User-Name} --password=%{User-Password}"
  	shell_escape = yes
  }
  # Loaded module rlm_realm
  # Loading module "IPASS" from file /usr/local/etc/raddb/mods-enabled/realm
  realm IPASS {
  	format = "prefix"
  	delimiter = "/"
  	ignore_default = no
  	ignore_null = no
  }
  # Loading module "suffix" from file /usr/local/etc/raddb/mods-enabled/realm
  realm suffix {
  	format = "suffix"
  	delimiter = "@"
  	ignore_default = no
  	ignore_null = no
  }
  # Loading module "bangpath" from file /usr/local/etc/raddb/mods-enabled/realm
  realm bangpath {
  	format = "prefix"
  	delimiter = "!"
  	ignore_default = no
  	ignore_null = no
  }
  # Loading module "realmpercent" from file /usr/local/etc/raddb/mods-enabled/realm
  realm realmpercent {
  	format = "suffix"
  	delimiter = "%"
  	ignore_default = no
  	ignore_null = no
  }
  # Loading module "ntdomain" from file /usr/local/etc/raddb/mods-enabled/realm
  realm ntdomain {
  	format = "prefix"
  	delimiter = "\"
  	ignore_default = no
  	ignore_null = no
  }
  # Loaded module rlm_cache
  # Loading module "cache_eap" from file /usr/local/etc/raddb/mods-enabled/cache_eap
  cache cache_eap {
  	driver = "rlm_cache_rbtree"
  	key = "%{%{control:State}:-%{%{reply:State}:-%{State}}}"
  	ttl = 15
  	max_entries = 0
  	epoch = 0
  	add_stats = no
  }
  # Loaded module rlm_unpack
  # Loading module "unpack" from file /usr/local/etc/raddb/mods-enabled/unpack
  # Loading module "echo" from file /usr/local/etc/raddb/mods-enabled/echo
  exec echo {
  	wait = yes
  	program = "/bin/echo %{User-Name}"
  	input_pairs = "request"
  	output_pairs = "reply"
  	shell_escape = yes
  }
  # Loading module "detail" from file /usr/local/etc/raddb/mods-enabled/detail
  detail {
  	filename = "/usr/local/var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/detail-%Y%m%d"
  	header = "%t"
  	permissions = 384
  	locking = no
  	dates_as_integer = no
  	escape_filenames = no
  	log_packet_header = no
  }
  # Loaded module rlm_dynamic_clients
  # Loading module "dynamic_clients" from file /usr/local/etc/raddb/mods-enabled/dynamic_clients
  # Loaded module rlm_files
  # Loading module "files" from file /usr/local/etc/raddb/mods-enabled/files
  files {
  	filename = "/usr/local/etc/raddb/mods-config/files/authorize"
  	acctusersfile = "/usr/local/etc/raddb/mods-config/files/accounting"
  	preproxy_usersfile = "/usr/local/etc/raddb/mods-config/files/pre-proxy"
  }
  # Loaded module rlm_chap
  # Loading module "chap" from file /usr/local/etc/raddb/mods-enabled/chap
  # Loaded module rlm_logintime
  # Loading module "logintime" from file /usr/local/etc/raddb/mods-enabled/logintime
  logintime {
  	minimum_timeout = 60
  }
  # Loaded module rlm_pap
  # Loading module "pap" from file /usr/local/etc/raddb/mods-enabled/pap
  pap {
  	normalise = yes
  }
  # Loaded module rlm_eap
  # Loading module "eap" from file /usr/local/etc/raddb/mods-enabled/eap
  eap {
  	default_eap_type = "md5"
  	timer_expire = 60
  	max_eap_type = 52
  	ignore_unknown_eap_types = no
  	cisco_accounting_username_bug = no
  	max_sessions = 16384
  	dedup_key = ""
  }
  # Loaded module rlm_mschap
  # Loading module "mschap" from file /usr/local/etc/raddb/mods-enabled/mschap
  mschap {
  	use_mppe = yes
  	require_encryption = no
  	require_strong = no
  	with_ntdomain_hack = yes
   passchange {
   }
  	allow_retry = yes
  	winbind_retry_with_normalised_username = no
  }
  # Loaded module rlm_expiration
  # Loading module "expiration" from file /usr/local/etc/raddb/mods-enabled/expiration
  # Loaded module rlm_soh
  # Loading module "soh" from file /usr/local/etc/raddb/mods-enabled/soh
  soh {
  	dhcp = yes
  }
  # Loaded module rlm_date
  # Loading module "date" from file /usr/local/etc/raddb/mods-enabled/date
  date {
  	format = "%b %e %Y %H:%M:%S %Z"
  	utc = no
  }
  # Loading module "wispr2date" from file /usr/local/etc/raddb/mods-enabled/date
  date wispr2date {
  	format = "%Y-%m-%dT%H:%M:%S"
  	utc = no
  }
  # Loaded module rlm_utf8
  # Loading module "utf8" from file /usr/local/etc/raddb/mods-enabled/utf8
  # Loading module "exec" from file /usr/local/etc/raddb/mods-enabled/exec
  exec {
  	wait = no
  	input_pairs = "request"
  	shell_escape = yes
  	timeout = 10
  }
  instantiate {
  }
  # Instantiating module "attr_filter.post-proxy" from file /usr/local/etc/raddb/mods-enabled/attr_filter
reading pairlist file /usr/local/etc/raddb/mods-config/attr_filter/post-proxy
  # Instantiating module "attr_filter.pre-proxy" from file /usr/local/etc/raddb/mods-enabled/attr_filter
reading pairlist file /usr/local/etc/raddb/mods-config/attr_filter/pre-proxy
  # Instantiating module "attr_filter.access_reject" from file /usr/local/etc/raddb/mods-enabled/attr_filter
reading pairlist file /usr/local/etc/raddb/mods-config/attr_filter/access_reject
  # Instantiating module "attr_filter.access_challenge" from file /usr/local/etc/raddb/mods-enabled/attr_filter
reading pairlist file /usr/local/etc/raddb/mods-config/attr_filter/access_challenge
  # Instantiating module "attr_filter.accounting_response" from file /usr/local/etc/raddb/mods-enabled/attr_filter
reading pairlist file /usr/local/etc/raddb/mods-config/attr_filter/accounting_response
  # Instantiating module "preprocess" from file /usr/local/etc/raddb/mods-enabled/preprocess
reading pairlist file /usr/local/etc/raddb/mods-config/preprocess/huntgroups
reading pairlist file /usr/local/etc/raddb/mods-config/preprocess/hints
  # Instantiating module "linelog" from file /usr/local/etc/raddb/mods-enabled/linelog
  # Instantiating module "log_accounting" from file /usr/local/etc/raddb/mods-enabled/linelog
  # Instantiating module "detail_redundant2" from file /usr/local/etc/raddb/mods-enabled/redundant
  # Instantiating module "etc_passwd" from file /usr/local/etc/raddb/mods-enabled/passwd
rlm_passwd: nfields: 3 keyfield 0(User-Name) listable: no
  # Instantiating module "auth_log" from file /usr/local/etc/raddb/mods-enabled/detail.log
rlm_detail (auth_log): 'User-Password' suppressed, will not appear in detail output
  # Instantiating module "reply_log" from file /usr/local/etc/raddb/mods-enabled/detail.log
  # Instantiating module "pre_proxy_log" from file /usr/local/etc/raddb/mods-enabled/detail.log
  # Instantiating module "post_proxy_log" from file /usr/local/etc/raddb/mods-enabled/detail.log
  # Instantiating module "reject" from file /usr/local/etc/raddb/mods-enabled/always
  # Instantiating module "fail" from file /usr/local/etc/raddb/mods-enabled/always
  # Instantiating module "ok" from file /usr/local/etc/raddb/mods-enabled/always
  # Instantiating module "handled" from file /usr/local/etc/raddb/mods-enabled/always
  # Instantiating module "invalid" from file /usr/local/etc/raddb/mods-enabled/always
  # Instantiating module "userlock" from file /usr/local/etc/raddb/mods-enabled/always
  # Instantiating module "notfound" from file /usr/local/etc/raddb/mods-enabled/always
  # Instantiating module "noop" from file /usr/local/etc/raddb/mods-enabled/always
  # Instantiating module "updated" from file /usr/local/etc/raddb/mods-enabled/always
  # Instantiating module "IPASS" from file /usr/local/etc/raddb/mods-enabled/realm
  # Instantiating module "suffix" from file /usr/local/etc/raddb/mods-enabled/realm
  # Instantiating module "bangpath" from file /usr/local/etc/raddb/mods-enabled/realm
  # Instantiating module "realmpercent" from file /usr/local/etc/raddb/mods-enabled/realm
  # Instantiating module "ntdomain" from file /usr/local/etc/raddb/mods-enabled/realm
  # Instantiating module "cache_eap" from file /usr/local/etc/raddb/mods-enabled/cache_eap
rlm_cache (cache_eap): Driver rlm_cache_rbtree (module rlm_cache_rbtree) loaded and linked
  # Instantiating module "detail" from file /usr/local/etc/raddb/mods-enabled/detail
  # Instantiating module "files" from file /usr/local/etc/raddb/mods-enabled/files
reading pairlist file /usr/local/etc/raddb/mods-config/files/authorize
reading pairlist file /usr/local/etc/raddb/mods-config/files/accounting
reading pairlist file /usr/local/etc/raddb/mods-config/files/pre-proxy
  # Instantiating module "logintime" from file /usr/local/etc/raddb/mods-enabled/logintime
  # Instantiating module "pap" from file /usr/local/etc/raddb/mods-enabled/pap
  # Instantiating module "eap" from file /usr/local/etc/raddb/mods-enabled/eap
   # Linked to sub-module rlm_eap_md5
rlm_eap (EAP): Ignoring EAP method 'leap', because it is no longer supported
   # Linked to sub-module rlm_eap_gtc
   gtc {
   	challenge = "Password: "
   	auth_type = "PAP"
   }
   # Linked to sub-module rlm_eap_tls
   tls {
   	tls = "tls-common"
   }
   tls-config tls-common {
   	verify_depth = 0
   	ca_path = "/usr/local/etc/raddb/certs"
   	pem_file_type = yes
   	private_key_file = "/usr/local/etc/raddb/certs/server.pem"
   	certificate_file = "/usr/local/etc/raddb/certs/server.pem"
   	ca_file = "/usr/local/etc/raddb/certs/ca.pem"
   	private_key_password = <<< secret >>>
   	dh_file = "/usr/local/etc/raddb/certs/dh"
   	fragment_size = 1024
   	include_length = yes
   	auto_chain = yes
   	check_crl = no
   	check_all_crl = no
   	ca_path_reload_interval = 0
   	cipher_list = "DEFAULT"
   	cipher_server_preference = no
   	reject_unknown_intermediate_ca = no
   	ecdh_curve = "prime256v1"
   	disable_tlsv1 = yes
   	disable_tlsv1_1 = yes
   	tls_max_version = "1.2"
   	tls_min_version = "1.2"
    cache {
    	enable = no
    	lifetime = 24
    	max_entries = 255
    }
    verify {
    	skip_if_ocsp_ok = no
    }
    ocsp {
    	enable = no
    	override_cert_url = yes
    	url = http://127.0.0.1/ocsp/
    	use_nonce = yes
    	timeout = 0
    	softfail = no
    }
   }
tls: Please use 'tls_min_version' and 'tls_max_version' instead of 'disable_tlsv1'
tls: Please use 'tls_min_version' and 'tls_max_version' instead of 'disable_tlsv1_1'
tls: Setting DH parameters from /usr/local/etc/raddb/certs/dh - this is no longer necessary.
tls: You should comment out the 'dh_file' configuration item.
   # Linked to sub-module rlm_eap_ttls
   ttls {
   	tls = "tls-common"
   	default_eap_type = "md5"
   	copy_request_to_tunnel = no
   	use_tunneled_reply = no
   	virtual_server = "inner-tunnel"
   	include_length = yes
   	require_client_cert = no
   }
tls: Using cached TLS configuration from previous invocation
   # Linked to sub-module rlm_eap_peap
   peap {
   	tls = "tls-common"
   	default_eap_type = "mschapv2"
   	copy_request_to_tunnel = no
   	use_tunneled_reply = no
   	proxy_tunneled_request_as_eap = yes
   	virtual_server = "inner-tunnel"
   	soh = no
   	require_client_cert = no
   }
tls: Using cached TLS configuration from previous invocation
   # Linked to sub-module rlm_eap_mschapv2
   mschapv2 {
   	with_ntdomain_hack = no
   	send_error = no
   }
  # Instantiating module "mschap" from file /usr/local/etc/raddb/mods-enabled/mschap
rlm_mschap (mschap): using internal authentication
  # Instantiating module "expiration" from file /usr/local/etc/raddb/mods-enabled/expiration
 } # modules
radiusd: #### Loading Virtual Servers ####
server { # from file /usr/local/etc/raddb/radiusd.conf
} # server
server default { # from file /usr/local/etc/raddb/sites-enabled/default
 # Loading authenticate {...}
Compiling Auth-Type PAP for attr Auth-Type
Compiling Auth-Type CHAP for attr Auth-Type
Compiling Auth-Type MS-CHAP for attr Auth-Type
 # Loading authorize {...}
Ignoring "sql" (see raddb/mods-available/README.rst)
Ignoring "ldap" (see raddb/mods-available/README.rst)
 # Loading preacct {...}
 # Loading accounting {...}
 # Loading post-proxy {...}
 # Loading post-auth {...}
Compiling Post-Auth-Type REJECT for attr Post-Auth-Type
Compiling Post-Auth-Type Challenge for attr Post-Auth-Type
} # server default
server redundant-2-server { # from file /usr/local/etc/raddb/sites-enabled/redundant-radrelay-2
 # Loading accounting {...}
} # server redundant-2-server
server inner-tunnel { # from file /usr/local/etc/raddb/sites-enabled/inner-tunnel
 # Loading authenticate {...}
Compiling Auth-Type PAP for attr Auth-Type
Compiling Auth-Type CHAP for attr Auth-Type
Compiling Auth-Type MS-CHAP for attr Auth-Type
 # Loading authorize {...}
 # Loading session {...}
 # Loading post-proxy {...}
 # Loading post-auth {...}
 # Skipping contents of 'if' as it is always 'false' -- /usr/local/etc/raddb/sites-enabled/inner-tunnel:336
Compiling Post-Auth-Type REJECT for attr Post-Auth-Type
} # server inner-tunnel
radiusd: #### Opening IP addresses and Ports ####
listen {
  	type = "auth"
  	ipaddr = *
  	port = 1812
   limit {
   	max_connections = 16
   	lifetime = 0
   	idle_timeout = 30
   }
}
listen {
  	type = "acct"
  	ipaddr = *
  	port = 1813
   limit {
   	max_connections = 16
   	lifetime = 0
   	idle_timeout = 30
   }
}
listen {
  	type = "auth"
  	ipv6addr = ::
  	port = 0
   limit {
   	max_connections = 16
   	lifetime = 0
   	idle_timeout = 30
   }
}
listen {
  	type = "acct"
  	ipv6addr = ::
  	port = 0
   limit {
   	max_connections = 16
   	lifetime = 0
   	idle_timeout = 30
   }
}
listen {
  	type = "detail"
  listen {
  	filename = "/var/data/redundant2/detail"
  	load_factor = 30
  	poll_interval = 1
  	retry_interval = 30
  	one_shot = no
  	track = yes
  }
}
listen {
  	type = "auth"
  	ipaddr = 127.0.0.1
  	port = 18120
}
Listening on auth address * port 1812 bound to server default
Listening on acct address * port 1813 bound to server default
Listening on auth address :: port 1812 bound to server default
Listening on acct address :: port 1813 bound to server default
Listening on detail file /var/data/redundant2/detail as server redundant-2-server
Listening on auth address 127.0.0.1 port 18120 bound to server inner-tunnel
Listening on proxy address * port 44103
Listening on proxy address :: port 55513
Ready to process requests
detail (/var/data/redundant2/detail): Polling for detail file
detail (/var/data/redundant2/detail): Detail listener state unopened waiting 0.943258 sec
detail (/var/data/redundant2/detail): Polling for detail file
detail (/var/data/redundant2/detail): Detail listener state unopened waiting 1.104944 sec
detail (/var/data/redundant2/detail): Polling for detail file
detail (/var/data/redundant2/detail): Detail listener state unopened waiting 0.828299 sec
detail (/var/data/redundant2/detail): Polling for detail file
detail (/var/data/redundant2/detail): Detail listener state unopened waiting 0.909490 sec
detail (/var/data/redundant2/detail): Polling for detail file
detail (/var/data/redundant2/detail): Detail listener state unopened waiting 0.912661 sec
detail (/var/data/redundant2/detail): Polling for detail file
detail (/var/data/redundant2/detail): Detail listener state unopened waiting 1.220833 sec
detail (/var/data/redundant2/detail): Polling for detail file
detail (/var/data/redundant2/detail): Detail listener state unopened waiting 1.118784 sec
(0) Received Accounting-Request Id 1 from 192.168.1.200:61807 to 192.168.1.204:1813 length 42
(0)   User-Name = "testuser"
(0)   Acct-Status-Type = Start
(0)   Acct-Session-Id = "8592"
(0) # Executing section preacct from file /usr/local/etc/raddb/sites-enabled/default
(0)   preacct {
(0)     [preprocess] = ok
(0)     policy acct_unique {
(0)       update request {
(0)         &Tmp-String-9 := "ai:"
(0)       } # update request = noop
(0)       if (("%{hex:&Class}" =~ /^%{hex:&Tmp-String-9}/) && 	    ("%{string:&Class}" =~ /^ai:([0-9a-f]{32})/i)) {
(0)       EXPAND %{hex:&Class}
(0)          -->
(0)       EXPAND ^%{hex:&Tmp-String-9}
(0)          --> ^61693a
(0)       if (("%{hex:&Class}" =~ /^%{hex:&Tmp-String-9}/) && 	    ("%{string:&Class}" =~ /^ai:([0-9a-f]{32})/i))  -> FALSE
(0)       else {
(0)         update request {
(0)           EXPAND %{md5:%{User-Name},%{Acct-Session-ID},%{%{NAS-IPv6-Address}:-%{NAS-IP-Address}},%{NAS-Identifier},%{NAS-Port-ID},%{NAS-Port}}
(0)              --> 2ce36d08ca5e9d33e496de3dacaa4328
(0)           &Acct-Unique-Session-Id := 2ce36d08ca5e9d33e496de3dacaa4328
(0)         } # update request = noop
(0)       } # else = noop
(0)     } # policy acct_unique = noop
(0) suffix: Checking for suffix after "@"
(0) suffix: No '@' in User-Name = "testuser", looking up realm NULL
(0) suffix: No such realm "NULL"
(0)     [suffix] = noop
(0)     [files] = noop
(0)   } # preacct = ok
(0) # Executing section accounting from file /usr/local/etc/raddb/sites-enabled/default
(0)   accounting {
(0) detail: EXPAND /usr/local/var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/detail-%Y%m%d
(0) detail:    --> /usr/local/var/log/radius/radacct/192.168.1.200/detail-20250115
(0) detail: /usr/local/var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/detail-%Y%m%d expands to /usr/local/var/log/radius/radacct/192.168.1.200/detail-20250115
(0) detail: EXPAND %t
(0) detail:    --> Wed Jan 15 13:54:49 2025
(0)     [detail] = ok
(0)     [unix] = ok
(0)     [exec] = noop
(0) attr_filter.accounting_response: EXPAND %{User-Name}
(0) attr_filter.accounting_response:    --> testuser
(0) attr_filter.accounting_response: Matched entry DEFAULT at line 12
(0)     [attr_filter.accounting_response] = updated
(0)     policy is_redundant_partner {
(0)       if ( "%{Packet-src-IP-Address}" == "192.168.1.216" ) {
(0)       EXPAND %{Packet-src-IP-Address}
(0)          --> 192.168.1.200
(0)       if ( "%{Packet-src-IP-Address}" == "192.168.1.216" )  -> FALSE
(0)       [noop] = noop
(0)     } # policy is_redundant_partner = noop
(0)     if (noop) {
(0)     if (noop)  -> TRUE
(0)     if (noop)  {
(0) detail_redundant2: EXPAND /var/data/redundant2/detail
(0) detail_redundant2:    --> /var/data/redundant2/detail
(0) detail_redundant2: /var/data/redundant2/detail expands to /var/data/redundant2/detail
(0) detail_redundant2: EXPAND %t
(0) detail_redundant2:    --> Wed Jan 15 13:54:49 2025
(0)       [detail_redundant2] = ok
(0)     } # if (noop)  = ok
(0)   } # accounting = updated
(0) Sent Accounting-Response Id 1 from 192.168.1.204:1813 to 192.168.1.200:61807 length 20
(0) Finished request
(0) Cleaning up request packet ID 1 with timestamp +6 due to done
Ready to process requests
detail (/var/data/redundant2/detail): Polling for detail file
detail (/var/data/redundant2/detail): Renaming /var/data/redundant2/detail -> /var/data/redundant2/detail.work
detail (/var/data/redundant2/detail): Read packet from /var/data/redundant2/detail.work
	User-Name = "testuser"
	Acct-Status-Type = Start
	Acct-Session-Id = "8592"
	NAS-IP-Address = 192.168.1.200
	Event-Timestamp = "Jan 15 2025 13:54:49 JST"
	Tmp-String-9 = "ai:"
	Acct-Unique-Session-Id = "2ce36d08ca5e9d33e496de3dacaa4328"
	Packet-Original-Timestamp = "Jan 15 2025 13:54:48 JST"
	Acct-Delay-Time = 0
	Packet-Transmit-Counter = 1
(1) # Executing section accounting from file /usr/local/etc/raddb/sites-enabled/redundant-radrelay-2
(1)   accounting {
(1)     update control {
(1)       Proxy-To-Realm := "redundant-2"
(1)     } # update control = noop
(1)   } # accounting = noop
(1) Starting proxy to home server 192.168.1.216 port 1813
(1) server redundant-2-server {
(1) }
(1) Proxying request to home server 192.168.1.216 port 1813 timeout 5.000000
Waking up in 0.3 seconds.
(1) Expecting proxy response no later than 4.666454 seconds from now
Waking up in 4.6 seconds.
(1) No proxy response, giving up on request and marking it done
Marking home server 192.168.1.216 port 1813 as zombie (it has not responded in 5.000000 seconds).
PING: Waiting 4 seconds for response to ping
(2) Sent Status-Server Id 74 from 0.0.0.0:44103 to 192.168.1.216:1813 length 70
(2)   Message-Authenticator := 0x00
(2)   NAS-Identifier := "Status Check 0. Are you alive?"
PING: Next status packet in 30 seconds
(1) ERROR: Failing proxied request for user "testuser", due to lack of any response from home server 192.168.1.216 port 1813
(1) Clearing existing &reply: attributes
(1) Found Post-Proxy-Type Fail-Accounting
(1) server redundant-2-server {
(1)   Post-Proxy-Type sub-section not found.  Ignoring.
(1) }
(1) detail (/var/data/redundant2/detail): No response to request.  Will retry in 30 seconds
(1) Finished request
(1) Cleaning up request packet ID 0 with timestamp +7 due to done
Waking up in 3.9 seconds.
No response to status check 2 ID 74 for home server 192.168.1.216 port 1813
zsh: segmentation fault  sudo /usr/local/sbin/radiusd -X

==========================================================================

This issue has been reported previously:
https://github.com/FreeRADIUS/freeradius-server/issues/5485

We would appreciate your prompt assistance in resolving this issue.

Thank you for your attention to this matter.

Best regards,

Segmentation Fault Issue in FreeRADIUS v3.2.5

早川 拓人

早川拓人