Hi! We have identified an issue in FreeRADIUS version 3.2.7 where a segmentation fault occurs when performing EAP-FAST authentication after modifying only the pac_opaque_key. Below is the debug log captured at the time of the segmentation fault: ==================== FreeRADIUS Version 3.2.7 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/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/totp 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/proxy_rate_limit 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/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" } unlang { group_stop_return = no policy_stop_return = 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_pool my_auth_failover { type = fail-over home_server = localhost } realm example.com { auth_pool = my_auth_failover } realm LOCAL { } radiusd: #### Loading Clients #### client localhost { ipaddr = 0.0.0.0 secret = <<< secret >>> nas_type = "other" proto = "*" limit { max_connections = 16 lifetime = 0 idle_timeout = 900 } } Shared secret for client localhost is short, and likely can be broken by an attacker. client localhost_ipv6 { ipv6addr = ::1 secret = <<< secret >>> limit { max_connections = 16 lifetime = 0 idle_timeout = 30 } } Shared secret for client localhost_ipv6 is short, and likely can be broken by an attacker. Debugger not attached Configuration version: 92f8-a19c-a8b2-e589 # 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 # Creating Autz-Type = New-TLS-Connection radiusd: #### Instantiating modules #### modules { # Loaded module rlm_expr # Loading module "expr" from file /usr/local/etc/raddb/mods-enabled/expr expr { safe_characters = "@abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.-_: /äéöüàâæçèéêëîïôœùûüaÿÄÉÖÜßÀÂÆÇÈÉÊËÎÏÔŒÙÛÜŸ" } # 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 } # Loading module "attr_filter.coa" from file /usr/local/etc/raddb/mods-enabled/attr_filter attr_filter attr_filter.coa { filename = "/usr/local/etc/raddb/mods-config/attr_filter/coa" 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_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 } # Loaded module rlm_detail # 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_totp # Loading module "totp" from file /usr/local/etc/raddb/mods-enabled/totp totp { time_step = 30 otp_length = 6 lookback_steps = 1 lookback_interval = 30 lookforward_steps = 0 } # 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_proxy_rate_limit # Loading module "proxy_rate_limit" from file /usr/local/etc/raddb/mods-enabled/proxy_rate_limit proxy_rate_limit { max_entries = 2048 idle_timeout = 10 num_subtables = 256 window = 1 } # 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 "attr_filter.coa" from file /usr/local/etc/raddb/mods-enabled/attr_filter reading pairlist file /usr/local/etc/raddb/mods-config/attr_filter/coa # 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 "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 "totp" from file /usr/local/etc/raddb/mods-enabled/totp # 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 # 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 >>> 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 = "" 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 } } # Linked to sub-module rlm_eap_ttls ttls { tls = "tls-common" default_eap_type = "fast" 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 } # Linked to sub-module rlm_eap_mschapv2 mschapv2 { with_ntdomain_hack = no send_error = no identity = "freeradius.example" } # Linked to sub-module rlm_eap_fast fast { tls = "tls-common" default_eap_type = "mschapv2" virtual_server = "inner-tunnel" cipher_list = "ALL:!EXPORT:!eNULL:!SSLv2" require_client_cert = no pac_lifetime = 604800 authority_identity = "freeradius" pac_opaque_key = "D3EF443DF29944EB5E27B236F8086065" copy_request_to_tunnel = yes use_tunneled_reply = no } tls: Using cached TLS configuration from previous invocation # 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 # Instantiating module "proxy_rate_limit" from file /usr/local/etc/raddb/mods-enabled/proxy_rate_limit } # 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) Compiling Autz-Type New-TLS-Connection for attr Autz-Type # Loading preacct {...} # Loading accounting {...} # Loading post-auth {...} Compiling Post-Auth-Type REJECT for attr Post-Auth-Type Compiling Post-Auth-Type Challenge for attr Post-Auth-Type Compiling Post-Auth-Type Client-Lost for attr Post-Auth-Type } # server default 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 post-proxy {...} # Loading post-auth {...} # Skipping contents of 'if' as it is always 'false' -- /usr/local/etc/raddb/sites-enabled/inner-tunnel:366 Compiling Post-Auth-Type REJECT for attr Post-Auth-Type } # server inner-tunnel radiusd: #### Opening IP addresses and Ports #### listen { type = "auth" ipaddr = * port = 0 limit { max_connections = 16 lifetime = 0 idle_timeout = 900 } } listen { type = "acct" ipaddr = * port = 0 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 = "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 auth address 127.0.0.1 port 18120 bound to server inner-tunnel Listening on proxy address * port 35763 Listening on proxy address :: port 43914 Ready to process requests (0) Received Access-Request Id 0 from 10.27.253.116:35453 to 10.27.253.187:1812 length 132 (0) User-Name = "anonymous" (0) NAS-IP-Address = 127.0.0.1 (0) Calling-Station-Id = "02-00-00-00-00-01" (0) Framed-MTU = 1400 (0) NAS-Port-Type = Wireless-802.11 (0) Service-Type = Framed-User (0) Connect-Info = "CONNECT 11Mbps 802.11b" (0) EAP-Message = 0x020a000e01616e6f6e796d6f7573 (0) Message-Authenticator = 0xcab062291ef86f8250861f7f1ff96e62 (0) # Executing section authorize from file /usr/local/etc/raddb/sites-enabled/default (0) authorize { (0) policy filter_username { (0) if (&User-Name) { (0) if (&User-Name) -> TRUE (0) if (&User-Name) { (0) if (&User-Name =~ / /) { (0) if (&User-Name =~ / /) -> FALSE (0) if (&User-Name =~ /@[^@]*@/ ) { (0) if (&User-Name =~ /@[^@]*@/ ) -> FALSE (0) if (&User-Name =~ /\.\./ ) { (0) if (&User-Name =~ /\.\./ ) -> FALSE (0) if ((&User-Name =~ /@/) && (&User-Name !~ /@(.+)\.(.+)$/)) { (0) if ((&User-Name =~ /@/) && (&User-Name !~ /@(.+)\.(.+)$/)) -> FALSE (0) if (&User-Name =~ /\.$/) { (0) if (&User-Name =~ /\.$/) -> FALSE (0) if (&User-Name =~ /@\./) { (0) if (&User-Name =~ /@\./) -> FALSE (0) } # if (&User-Name) = notfound (0) } # policy filter_username = notfound (0) [preprocess] = ok (0) [chap] = noop (0) [mschap] = noop (0) [digest] = noop (0) suffix: Checking for suffix after "@" (0) suffix: No '@' in User-Name = "anonymous", looking up realm NULL (0) suffix: No such realm "NULL" (0) [suffix] = noop (0) eap: Peer sent EAP Response (code 2) ID 10 length 14 (0) eap: EAP-Identity reply, returning 'ok' so we can short-circuit the rest of authorize (0) [eap] = ok (0) } # authorize = ok (0) Found Auth-Type = eap (0) # Executing group from file /usr/local/etc/raddb/sites-enabled/default (0) authenticate { (0) eap: Peer sent packet with method EAP Identity (1) (0) eap: Using default_eap_type = MD5 (0) eap: Calling submodule eap_md5 to process data (0) eap_md5: Issuing MD5 Challenge (0) eap: Sending EAP Request (code 1) ID 11 length 22 (0) eap: EAP session adding &reply:State = 0xaee826abaee32297 (0) [eap] = handled (0) } # authenticate = handled (0) Using Post-Auth-Type Challenge (0) # Executing group from file /usr/local/etc/raddb/sites-enabled/default (0) Challenge { ... } # empty sub-section is ignored (0) Sent Access-Challenge Id 0 from 10.27.253.187:1812 to 10.27.253.116:35453 length 80 (0) EAP-Message = 0x010b001604105828ed1880462a5b6a241c1404973cb6 (0) Message-Authenticator = 0x00000000000000000000000000000000 (0) State = 0xaee826abaee32297218f24d02553b7f2 (0) Finished request Waking up in 4.9 seconds. (1) Received Access-Request Id 1 from 10.27.253.116:35453 to 10.27.253.187:1812 length 142 (1) User-Name = "anonymous" (1) NAS-IP-Address = 127.0.0.1 (1) Calling-Station-Id = "02-00-00-00-00-01" (1) Framed-MTU = 1400 (1) NAS-Port-Type = Wireless-802.11 (1) Service-Type = Framed-User (1) Connect-Info = "CONNECT 11Mbps 802.11b" (1) EAP-Message = 0x020b0006032b (1) State = 0xaee826abaee32297218f24d02553b7f2 (1) Message-Authenticator = 0x8151d591e61e8ebebf6d360d2ba40588 (1) session-state: No cached attributes (1) # Executing section authorize from file /usr/local/etc/raddb/sites-enabled/default (1) authorize { (1) policy filter_username { (1) if (&User-Name) { (1) if (&User-Name) -> TRUE (1) if (&User-Name) { (1) if (&User-Name =~ / /) { (1) if (&User-Name =~ / /) -> FALSE (1) if (&User-Name =~ /@[^@]*@/ ) { (1) if (&User-Name =~ /@[^@]*@/ ) -> FALSE (1) if (&User-Name =~ /\.\./ ) { (1) if (&User-Name =~ /\.\./ ) -> FALSE (1) if ((&User-Name =~ /@/) && (&User-Name !~ /@(.+)\.(.+)$/)) { (1) if ((&User-Name =~ /@/) && (&User-Name !~ /@(.+)\.(.+)$/)) -> FALSE (1) if (&User-Name =~ /\.$/) { (1) if (&User-Name =~ /\.$/) -> FALSE (1) if (&User-Name =~ /@\./) { (1) if (&User-Name =~ /@\./) -> FALSE (1) } # if (&User-Name) = notfound (1) } # policy filter_username = notfound (1) [preprocess] = ok (1) [chap] = noop (1) [mschap] = noop (1) [digest] = noop (1) suffix: Checking for suffix after "@" (1) suffix: No '@' in User-Name = "anonymous", looking up realm NULL (1) suffix: No such realm "NULL" (1) [suffix] = noop (1) eap: Peer sent EAP Response (code 2) ID 11 length 6 (1) eap: No EAP Start, assuming it's an on-going EAP conversation (1) [eap] = updated (1) [files] = noop (1) [expiration] = noop (1) [logintime] = noop Not doing PAP as Auth-Type is already set. (1) [pap] = noop (1) } # authorize = updated (1) Found Auth-Type = eap (1) # Executing group from file /usr/local/etc/raddb/sites-enabled/default (1) authenticate { (1) eap: Removing EAP session with state 0xaee826abaee32297 (1) eap: Previous EAP request found for state 0xaee826abaee32297, released from the list (1) eap: Peer sent packet with method EAP NAK (3) (1) eap: Found mutually acceptable type FAST (43) (1) eap: Found compatible type in NAK - EAP-Type = FAST (1) eap: Calling submodule eap_fast to process data (1) eap_fast: (TLS) FAST -Initiating new session (1) eap_fast: Over-riding main cipher list with 'ALL:!EXPORT:!eNULL:!SSLv2' (1) eap_fast: Setting security level to 0 to allow anonymous cipher suites (1) eap: Sending EAP Request (code 1) ID 12 length 26 (1) eap: EAP session adding &reply:State = 0xaee826abafe40d97 (1) [eap] = handled (1) } # authenticate = handled (1) Using Post-Auth-Type Challenge (1) # Executing group from file /usr/local/etc/raddb/sites-enabled/default (1) Challenge { ... } # empty sub-section is ignored (1) session-state: Saving cached attributes (1) Framed-MTU = 984 (1) Sent Access-Challenge Id 1 from 10.27.253.187:1812 to 10.27.253.116:35453 length 84 (1) EAP-Message = 0x010c001a2b2100040010ebad53172137d2c5c387b6351e705ae2 (1) Message-Authenticator = 0x00000000000000000000000000000000 (1) State = 0xaee826abafe40d97218f24d02553b7f2 (1) Finished request Waking up in 4.9 seconds. (2) Received Access-Request Id 2 from 10.27.253.116:35453 to 10.27.253.187:1812 length 434 (2) User-Name = "anonymous" (2) NAS-IP-Address = 127.0.0.1 (2) Calling-Station-Id = "02-00-00-00-00-01" (2) Framed-MTU = 1400 (2) NAS-Port-Type = Wireless-802.11 (2) Service-Type = Framed-User (2) Connect-Info = "CONNECT 11Mbps 802.11b" (2) EAP-Message = 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 (2) State = 0xaee826abafe40d97218f24d02553b7f2 (2) Message-Authenticator = 0x0c43e6875536fdfc2f51ff168369acf8 (2) Restoring &session-state (2) &session-state:Framed-MTU = 984 (2) # Executing section authorize from file /usr/local/etc/raddb/sites-enabled/default (2) authorize { (2) policy filter_username { (2) if (&User-Name) { (2) if (&User-Name) -> TRUE (2) if (&User-Name) { (2) if (&User-Name =~ / /) { (2) if (&User-Name =~ / /) -> FALSE (2) if (&User-Name =~ /@[^@]*@/ ) { (2) if (&User-Name =~ /@[^@]*@/ ) -> FALSE (2) if (&User-Name =~ /\.\./ ) { (2) if (&User-Name =~ /\.\./ ) -> FALSE (2) if ((&User-Name =~ /@/) && (&User-Name !~ /@(.+)\.(.+)$/)) { (2) if ((&User-Name =~ /@/) && (&User-Name !~ /@(.+)\.(.+)$/)) -> FALSE (2) if (&User-Name =~ /\.$/) { (2) if (&User-Name =~ /\.$/) -> FALSE (2) if (&User-Name =~ /@\./) { (2) if (&User-Name =~ /@\./) -> FALSE (2) } # if (&User-Name) = notfound (2) } # policy filter_username = notfound (2) [preprocess] = ok (2) [chap] = noop (2) [mschap] = noop (2) [digest] = noop (2) suffix: Checking for suffix after "@" (2) suffix: No '@' in User-Name = "anonymous", looking up realm NULL (2) suffix: No such realm "NULL" (2) [suffix] = noop (2) eap: Peer sent EAP Response (code 2) ID 12 length 296 (2) eap: Continuing tunnel setup (2) [eap] = ok (2) } # authorize = ok (2) Found Auth-Type = eap (2) # Executing group from file /usr/local/etc/raddb/sites-enabled/default (2) authenticate { (2) eap: Removing EAP session with state 0xaee826abafe40d97 (2) eap: Previous EAP request found for state 0xaee826abafe40d97, released from the list (2) eap: Peer sent packet with method EAP FAST (43) (2) eap: Calling submodule eap_fast to process data (2) eap_fast: Authenticate (2) eap_fast: (TLS) EAP Done initial handshake (2) eap_fast: (TLS) FAST - Handshake state - before SSL initialization (2) eap_fast: (TLS) FAST - Handshake state - Server before SSL initialization (2) eap_fast: (TLS) FAST - Handshake state - Server before SSL initialization (2) eap_fast: (TLS) FAST - recv TLS 1.3 Handshake, ClientHello (2) eap_fast: PAC provided via ClientHello SessionTicket extension zsh: segmentation fault sudo /usr/local/sbin/radiusd -X ==================== Steps to reproduce: ・Perform EAP-FAST authentication successfully. ・Stop FreeRADIUS and modify only the pac_opaque_key. ・Attempt EAP-FAST authentication again with the same user. ・FreeRADIUS crashes due to a segmentation fault. Cause: We have confirmed that the EVP_DecryptFinal_ex function returns either 1 or 0, but the return value is being checked using a condition that evaluates whether it is less than 0. This leads to a segmentation fault. Resolution: Our investigation revealed that the issue can be avoided by applying the following modification: src/modules/rlm_eap/types/rlm_eap_fast/eap_fast_crypto.c ==================== - if (ret < 0) return -1; + if (ret == 0) return -1; ==================== /早川