View Issue Details
ID | Project | Category | View Status | Date Submitted | Last Update |
---|---|---|---|---|---|
0000479 | AlmaLinux-9 | freeradius | public | 2024-09-06 11:46 | 2024-11-21 11:25 |
Reporter | matejv | Assigned To | elkhan | ||
Priority | normal | Severity | crash | Reproducibility | always |
Status | assigned | Resolution | open | ||
Platform | x86_64 | OS | AlmaLinux | OS Version | 9.4 |
Summary | 0000479: freeradius crash when status-server enabled and proxy server is unresponsive | ||||
Description | freeradius-3.0.21-40.el9_4.x86_64 will crash when configured with a home_server and status_check = status-server and the home server is not responding. The issue also affects upstream freeradius versions v3.0.27 and v3.2.5. It is fixed in v3.2.6. The fix is in this commit (https://github.com/FreeRADIUS/freeradius-server/commit/3a9449539e4c5a74c85685cad6abe6edf412f701). It was also applied to v3.0.x branch (https://github.com/FreeRADIUS/freeradius-server/commit/3448cd0dc1c6fb7842cda2bb1223256062b39ff7). I have applied the patch to Almalinux version of freeradius RPM. It applies cleanly, RPM builds and the crash is fixed. Almalinux freeradius-3.0.21-39.el9_3.x86_64 is not affected, only release 40 is buggy. | ||||
Steps To Reproduce | yum -y install freeradius Add to end of /etc/raddb/proxy.conf: home_server server1 { type = auth ipaddr = 192.168.0.1 port = 1812 secret = secret1 status_check = status-server } home_server_pool server1_pool { home_server = server1 } realm DEFAULT { nostrip auth_pool = server1_pool } Start server: radiusd -X In another terminal try to login: radtest user@somewhere.com pass1 127.0.0.1 1 testing123 The server will try to proxy requests to server1, will receive no response and send access-reject back to radtest. It will also start sending status-server packets to server1 and crash: (0) Proxying request to home server 192.168.0.1 port 1812 timeout 30.000000 ... (0) No proxy response, giving up on request and marking it done Marking home server 192.168.0.1 port 1812 as zombie (it has not responded in 30.000000 seconds). PING: Waiting 4 seconds for response to ping (1) Sent Status-Server Id 0 from 0.0.0.0:39123 to 192.168.0.1:1812 length 70 (1) Message-Authenticator := 0x00 (1) NAS-Identifier := "Status Check 0. Are you alive?" PING: Next status packet in 30 seconds ... (0) Sent Access-Reject Id 251 from 127.0.0.1:1812 to 127.0.0.1:34426 length 38 (0) Finished request Waking up in 3.9 seconds. No response to status check 1 ID 0 for home server 192.168.0.1 port 1812 Segmentation fault (core dumped) | ||||
Tags | No tags attached. | ||||
Attached Files | freeradius_proxy_status-server_crash.txt (29,679 bytes)
# radiusd -X FreeRADIUS Version 3.0.21 Copyright (C) 1999-2019 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/share/freeradius/dictionary including dictionary file /usr/share/freeradius/dictionary.dhcp including dictionary file /usr/share/freeradius/dictionary.vqp including dictionary file /etc/raddb/dictionary including configuration file /etc/raddb/radiusd.conf including configuration file /etc/raddb/proxy.conf including configuration file /etc/raddb/clients.conf including files in directory /etc/raddb/mods-enabled/ including configuration file /etc/raddb/mods-enabled/detail including configuration file /etc/raddb/mods-enabled/radutmp including configuration file /etc/raddb/mods-enabled/realm including configuration file /etc/raddb/mods-enabled/replicate including configuration file /etc/raddb/mods-enabled/echo including configuration file /etc/raddb/mods-enabled/linelog including configuration file /etc/raddb/mods-enabled/chap including configuration file /etc/raddb/mods-enabled/exec including configuration file /etc/raddb/mods-enabled/soh including configuration file /etc/raddb/mods-enabled/pap including configuration file /etc/raddb/mods-enabled/cache_eap including configuration file /etc/raddb/mods-enabled/date including configuration file /etc/raddb/mods-enabled/digest including configuration file /etc/raddb/mods-enabled/mschap including configuration file /etc/raddb/mods-enabled/sradutmp including configuration file /etc/raddb/mods-enabled/preprocess including configuration file /etc/raddb/mods-enabled/passwd including configuration file /etc/raddb/mods-enabled/attr_filter including configuration file /etc/raddb/mods-enabled/ntlm_auth including configuration file /etc/raddb/mods-enabled/detail.log including configuration file /etc/raddb/mods-enabled/unix including configuration file /etc/raddb/mods-enabled/expiration including configuration file /etc/raddb/mods-enabled/unpack including configuration file /etc/raddb/mods-enabled/always including configuration file /etc/raddb/mods-enabled/files including configuration file /etc/raddb/mods-enabled/expr including configuration file /etc/raddb/mods-enabled/dynamic_clients including configuration file /etc/raddb/mods-enabled/utf8 including configuration file /etc/raddb/mods-enabled/logintime including configuration file /etc/raddb/mods-enabled/eap including files in directory /etc/raddb/policy.d/ including configuration file /etc/raddb/policy.d/dhcp including configuration file /etc/raddb/policy.d/filter including configuration file /etc/raddb/policy.d/control including configuration file /etc/raddb/policy.d/rfc7542 including configuration file /etc/raddb/policy.d/cui including configuration file /etc/raddb/policy.d/accounting including configuration file /etc/raddb/policy.d/debug including configuration file /etc/raddb/policy.d/operator-name including configuration file /etc/raddb/policy.d/canonicalization including configuration file /etc/raddb/policy.d/eap including files in directory /etc/raddb/sites-enabled/ including configuration file /etc/raddb/sites-enabled/inner-tunnel including configuration file /etc/raddb/sites-enabled/default main { security { user = "radiusd" group = "radiusd" allow_core_dumps = no } name = "radiusd" prefix = "/usr" localstatedir = "/var" logdir = "/var/log/radius" run_dir = "/var/run/radiusd" } main { name = "radiusd" prefix = "/usr" localstatedir = "/var" sbindir = "/usr/sbin" logdir = "/var/log/radius" run_dir = "/var/run/radiusd" libdir = "/usr/lib64/freeradius" radacctdir = "/var/log/radius/radacct" hostname_lookups = no max_request_time = 30 cleanup_delay = 5 max_requests = 16384 postauth_client_lost = no pidfile = "/var/run/radiusd/radiusd.pid" checkrad = "/usr/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" } } 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 server1 { nonblock = no ipaddr = 192.168.0.1 port = 1812 type = "auth" secret = <<< secret >>> response_window = 30.000000 response_timeouts = 1 max_outstanding = 65536 zombie_period = 40 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 server1_pool { home_server = server1 } realm DEFAULT { auth_pool = server1_pool nostrip } radiusd: #### Loading Clients #### client localhost { ipaddr = 127.0.0.1 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 } } Found debugger attached # Creating Auth-Type = mschap # Creating Auth-Type = eap # Creating Auth-Type = PAP # Creating Auth-Type = CHAP # Creating Auth-Type = MS-CHAP # Creating Auth-Type = digest radiusd: #### Instantiating modules #### modules { # Loaded module rlm_detail # Loading module "detail" from file /etc/raddb/mods-enabled/detail detail { filename = "/var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/detail-%Y%m%d" header = "%t" permissions = 384 locking = no escape_filenames = no log_packet_header = no } # Loaded module rlm_radutmp # Loading module "radutmp" from file /etc/raddb/mods-enabled/radutmp radutmp { filename = "/var/log/radius/radutmp" username = "%{User-Name}" case_sensitive = yes check_with_nas = yes permissions = 384 caller_id = yes } # Loaded module rlm_realm # Loading module "IPASS" from file /etc/raddb/mods-enabled/realm realm IPASS { format = "prefix" delimiter = "/" ignore_default = no ignore_null = no } # Loading module "suffix" from file /etc/raddb/mods-enabled/realm realm suffix { format = "suffix" delimiter = "@" ignore_default = no ignore_null = no } # Loading module "bangpath" from file /etc/raddb/mods-enabled/realm realm bangpath { format = "prefix" delimiter = "!" ignore_default = no ignore_null = no } # Loading module "realmpercent" from file /etc/raddb/mods-enabled/realm realm realmpercent { format = "suffix" delimiter = "%" ignore_default = no ignore_null = no } # Loading module "ntdomain" from file /etc/raddb/mods-enabled/realm realm ntdomain { format = "prefix" delimiter = "\\" ignore_default = no ignore_null = no } # Loaded module rlm_replicate # Loading module "replicate" from file /etc/raddb/mods-enabled/replicate # Loaded module rlm_exec # Loading module "echo" from file /etc/raddb/mods-enabled/echo exec echo { wait = yes program = "/bin/echo %{User-Name}" input_pairs = "request" output_pairs = "reply" shell_escape = yes } # Loaded module rlm_linelog # Loading module "linelog" from file /etc/raddb/mods-enabled/linelog linelog { filename = "/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 /etc/raddb/mods-enabled/linelog linelog log_accounting { filename = "/var/log/radius/linelog-accounting" escape_filenames = no syslog_severity = "info" permissions = 384 format = "" reference = "Accounting-Request.%{%{Acct-Status-Type}:-unknown}" } # Loaded module rlm_chap # Loading module "chap" from file /etc/raddb/mods-enabled/chap # Loading module "exec" from file /etc/raddb/mods-enabled/exec exec { wait = no input_pairs = "request" shell_escape = yes timeout = 10 } # Loaded module rlm_soh # Loading module "soh" from file /etc/raddb/mods-enabled/soh soh { dhcp = yes } # Loaded module rlm_pap # Loading module "pap" from file /etc/raddb/mods-enabled/pap pap { normalise = yes } # Loaded module rlm_cache # Loading module "cache_eap" from file /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_date # Loading module "date" from file /etc/raddb/mods-enabled/date date { format = "%b %e %Y %H:%M:%S %Z" utc = no } # Loading module "wispr2date" from file /etc/raddb/mods-enabled/date date wispr2date { format = "%Y-%m-%dT%H:%M:%S" utc = no } # Loaded module rlm_digest # Loading module "digest" from file /etc/raddb/mods-enabled/digest # Loaded module rlm_mschap # Loading module "mschap" from file /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 } # Loading module "sradutmp" from file /etc/raddb/mods-enabled/sradutmp radutmp sradutmp { filename = "/var/log/radius/sradutmp" username = "%{User-Name}" case_sensitive = yes check_with_nas = yes permissions = 420 caller_id = no } # Loaded module rlm_preprocess # Loading module "preprocess" from file /etc/raddb/mods-enabled/preprocess preprocess { huntgroups = "/etc/raddb/mods-config/preprocess/huntgroups" hints = "/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_passwd # Loading module "etc_passwd" from file /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_attr_filter # Loading module "attr_filter.post-proxy" from file /etc/raddb/mods-enabled/attr_filter attr_filter attr_filter.post-proxy { filename = "/etc/raddb/mods-config/attr_filter/post-proxy" key = "%{Realm}" relaxed = no } # Loading module "attr_filter.pre-proxy" from file /etc/raddb/mods-enabled/attr_filter attr_filter attr_filter.pre-proxy { filename = "/etc/raddb/mods-config/attr_filter/pre-proxy" key = "%{Realm}" relaxed = no } # Loading module "attr_filter.access_reject" from file /etc/raddb/mods-enabled/attr_filter attr_filter attr_filter.access_reject { filename = "/etc/raddb/mods-config/attr_filter/access_reject" key = "%{User-Name}" relaxed = no } # Loading module "attr_filter.access_challenge" from file /etc/raddb/mods-enabled/attr_filter attr_filter attr_filter.access_challenge { filename = "/etc/raddb/mods-config/attr_filter/access_challenge" key = "%{User-Name}" relaxed = no } # Loading module "attr_filter.accounting_response" from file /etc/raddb/mods-enabled/attr_filter attr_filter attr_filter.accounting_response { filename = "/etc/raddb/mods-config/attr_filter/accounting_response" key = "%{User-Name}" relaxed = no } # Loading module "ntlm_auth" from file /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 } # Loading module "auth_log" from file /etc/raddb/mods-enabled/detail.log detail auth_log { filename = "/var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/auth-detail-%Y%m%d" header = "%t" permissions = 384 locking = no escape_filenames = no log_packet_header = no } # Loading module "reply_log" from file /etc/raddb/mods-enabled/detail.log detail reply_log { filename = "/var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/reply-detail-%Y%m%d" header = "%t" permissions = 384 locking = no escape_filenames = no log_packet_header = no } # Loading module "pre_proxy_log" from file /etc/raddb/mods-enabled/detail.log detail pre_proxy_log { filename = "/var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/pre-proxy-detail-%Y%m%d" header = "%t" permissions = 384 locking = no escape_filenames = no log_packet_header = no } # Loading module "post_proxy_log" from file /etc/raddb/mods-enabled/detail.log detail post_proxy_log { filename = "/var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/post-proxy-detail-%Y%m%d" header = "%t" permissions = 384 locking = no escape_filenames = no log_packet_header = no } # Loaded module rlm_unix # Loading module "unix" from file /etc/raddb/mods-enabled/unix unix { radwtmp = "/var/log/radius/radwtmp" } Creating attribute Unix-Group # Loaded module rlm_expiration # Loading module "expiration" from file /etc/raddb/mods-enabled/expiration # Loaded module rlm_unpack # Loading module "unpack" from file /etc/raddb/mods-enabled/unpack # Loaded module rlm_always # Loading module "reject" from file /etc/raddb/mods-enabled/always always reject { rcode = "reject" simulcount = 0 mpp = no } # Loading module "fail" from file /etc/raddb/mods-enabled/always always fail { rcode = "fail" simulcount = 0 mpp = no } # Loading module "ok" from file /etc/raddb/mods-enabled/always always ok { rcode = "ok" simulcount = 0 mpp = no } # Loading module "handled" from file /etc/raddb/mods-enabled/always always handled { rcode = "handled" simulcount = 0 mpp = no } # Loading module "invalid" from file /etc/raddb/mods-enabled/always always invalid { rcode = "invalid" simulcount = 0 mpp = no } # Loading module "userlock" from file /etc/raddb/mods-enabled/always always userlock { rcode = "userlock" simulcount = 0 mpp = no } # Loading module "notfound" from file /etc/raddb/mods-enabled/always always notfound { rcode = "notfound" simulcount = 0 mpp = no } # Loading module "noop" from file /etc/raddb/mods-enabled/always always noop { rcode = "noop" simulcount = 0 mpp = no } # Loading module "updated" from file /etc/raddb/mods-enabled/always always updated { rcode = "updated" simulcount = 0 mpp = no } # Loaded module rlm_files # Loading module "files" from file /etc/raddb/mods-enabled/files files { filename = "/etc/raddb/mods-config/files/authorize" acctusersfile = "/etc/raddb/mods-config/files/accounting" preproxy_usersfile = "/etc/raddb/mods-config/files/pre-proxy" } # Loaded module rlm_expr # Loading module "expr" from file /etc/raddb/mods-enabled/expr expr { safe_characters = "@abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.-_: /äéöüàâæçèéêëîïôœùûüaÿÄÉÖÜßÀÂÆÇÈÉÊËÎÏÔŒÙÛÜŸ" } # Loaded module rlm_dynamic_clients # Loading module "dynamic_clients" from file /etc/raddb/mods-enabled/dynamic_clients # Loaded module rlm_utf8 # Loading module "utf8" from file /etc/raddb/mods-enabled/utf8 # Loaded module rlm_logintime # Loading module "logintime" from file /etc/raddb/mods-enabled/logintime logintime { minimum_timeout = 60 } # Loaded module rlm_eap # Loading module "eap" from file /etc/raddb/mods-enabled/eap eap { default_eap_type = "md5" timer_expire = 60 ignore_unknown_eap_types = no cisco_accounting_username_bug = no max_sessions = 16384 } instantiate { } # Instantiating module "detail" from file /etc/raddb/mods-enabled/detail # Instantiating module "IPASS" from file /etc/raddb/mods-enabled/realm # Instantiating module "suffix" from file /etc/raddb/mods-enabled/realm # Instantiating module "bangpath" from file /etc/raddb/mods-enabled/realm # Instantiating module "realmpercent" from file /etc/raddb/mods-enabled/realm # Instantiating module "ntdomain" from file /etc/raddb/mods-enabled/realm # Instantiating module "linelog" from file /etc/raddb/mods-enabled/linelog # Instantiating module "log_accounting" from file /etc/raddb/mods-enabled/linelog # Instantiating module "pap" from file /etc/raddb/mods-enabled/pap # Instantiating module "cache_eap" from file /etc/raddb/mods-enabled/cache_eap rlm_cache (cache_eap): Driver rlm_cache_rbtree (module rlm_cache_rbtree) loaded and linked # Instantiating module "mschap" from file /etc/raddb/mods-enabled/mschap rlm_mschap (mschap): using internal authentication # Instantiating module "preprocess" from file /etc/raddb/mods-enabled/preprocess reading pairlist file /etc/raddb/mods-config/preprocess/huntgroups reading pairlist file /etc/raddb/mods-config/preprocess/hints # Instantiating module "etc_passwd" from file /etc/raddb/mods-enabled/passwd rlm_passwd: nfields: 3 keyfield 0(User-Name) listable: no # Instantiating module "attr_filter.post-proxy" from file /etc/raddb/mods-enabled/attr_filter reading pairlist file /etc/raddb/mods-config/attr_filter/post-proxy # Instantiating module "attr_filter.pre-proxy" from file /etc/raddb/mods-enabled/attr_filter reading pairlist file /etc/raddb/mods-config/attr_filter/pre-proxy # Instantiating module "attr_filter.access_reject" from file /etc/raddb/mods-enabled/attr_filter reading pairlist file /etc/raddb/mods-config/attr_filter/access_reject # Instantiating module "attr_filter.access_challenge" from file /etc/raddb/mods-enabled/attr_filter reading pairlist file /etc/raddb/mods-config/attr_filter/access_challenge # Instantiating module "attr_filter.accounting_response" from file /etc/raddb/mods-enabled/attr_filter reading pairlist file /etc/raddb/mods-config/attr_filter/accounting_response # Instantiating module "auth_log" from file /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 /etc/raddb/mods-enabled/detail.log # Instantiating module "pre_proxy_log" from file /etc/raddb/mods-enabled/detail.log # Instantiating module "post_proxy_log" from file /etc/raddb/mods-enabled/detail.log # Instantiating module "expiration" from file /etc/raddb/mods-enabled/expiration # Instantiating module "reject" from file /etc/raddb/mods-enabled/always # Instantiating module "fail" from file /etc/raddb/mods-enabled/always # Instantiating module "ok" from file /etc/raddb/mods-enabled/always # Instantiating module "handled" from file /etc/raddb/mods-enabled/always # Instantiating module "invalid" from file /etc/raddb/mods-enabled/always # Instantiating module "userlock" from file /etc/raddb/mods-enabled/always # Instantiating module "notfound" from file /etc/raddb/mods-enabled/always # Instantiating module "noop" from file /etc/raddb/mods-enabled/always # Instantiating module "updated" from file /etc/raddb/mods-enabled/always # Instantiating module "files" from file /etc/raddb/mods-enabled/files reading pairlist file /etc/raddb/mods-config/files/authorize reading pairlist file /etc/raddb/mods-config/files/accounting reading pairlist file /etc/raddb/mods-config/files/pre-proxy # Instantiating module "logintime" from file /etc/raddb/mods-enabled/logintime # Instantiating module "eap" from file /etc/raddb/mods-enabled/eap # Linked to sub-module rlm_eap_md5 # Linked to sub-module rlm_eap_leap # 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 = "/etc/raddb/certs" pem_file_type = yes private_key_file = "/etc/raddb/certs/server.pem" certificate_file = "/etc/raddb/certs/server.pem" ca_file = "/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 = "PROFILE=SYSTEM" cipher_server_preference = no reject_unknown_intermediate_ca = no ecdh_curve = "prime256v1" 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 = "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 } } # modules radiusd: #### Loading Virtual Servers #### server { # from file /etc/raddb/radiusd.conf } # server server inner-tunnel { # from file /etc/raddb/sites-enabled/inner-tunnel # Loading authenticate {...} # Loading authorize {...} Ignoring "sql" (see raddb/mods-available/README.rst) Ignoring "ldap" (see raddb/mods-available/README.rst) # Loading session {...} # Loading post-proxy {...} # Loading post-auth {...} # Skipping contents of 'if' as it is always 'false' -- /etc/raddb/sites-enabled/inner-tunnel:336 } # server inner-tunnel server default { # from file /etc/raddb/sites-enabled/default # Loading authenticate {...} # Loading authorize {...} # Loading preacct {...} # Loading accounting {...} # Loading post-proxy {...} # Loading post-auth {...} } # server default radiusd: #### Opening IP addresses and Ports #### listen { type = "auth" ipaddr = 127.0.0.1 port = 18120 } listen { type = "auth" ipaddr = * port = 0 limit { max_connections = 16 lifetime = 0 idle_timeout = 30 } } 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 } } Listening on auth address 127.0.0.1 port 18120 bound to server inner-tunnel 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 proxy address * port 39123 Listening on proxy address :: port 38877 Ready to process requests !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! BlastRADIUS check: Received packet with Message-Authenticator. Setting "require_message_authenticator = true" for client localhost !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! It looks like the client has been updated to protect from the BlastRADIUS attack. Please set "require_message_authenticator = true" for client localhost !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! (0) Received Access-Request Id 251 from 127.0.0.1:34426 to 127.0.0.1:1812 length 88 (0) Message-Authenticator = 0xea4fa63cfde90e3e94aa4e69d9252088 (0) User-Name = "user@somewhere.com" (0) User-Password = "pass1" (0) NAS-IP-Address = 172.17.0.2 (0) NAS-Port = 1 (0) # Executing section authorize from file /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: Looking up realm "somewhere.com" for User-Name = "user@somewhere.com" (0) suffix: Found realm "DEFAULT" (0) suffix: Adding Realm = "DEFAULT" (0) suffix: Proxying request from user user@somewhere.com to realm DEFAULT (0) suffix: Preparing to proxy authentication request to realm "DEFAULT" (0) [suffix] = updated (0) eap: No EAP-Message, not doing EAP (0) [eap] = noop (0) [files] = noop (0) [expiration] = noop (0) [logintime] = noop (0) [pap] = noop (0) } # authorize = updated (0) Starting proxy to home server 192.168.0.1 port 1812 (0) server default { (0) } (0) Proxying request to home server 192.168.0.1 port 1812 timeout 30.000000 (0) Sent Access-Request Id 138 from 0.0.0.0:39123 to 192.168.0.1:1812 length 99 (0) Message-Authenticator = 0xea4fa63cfde90e3e94aa4e69d9252088 (0) User-Name = "user@somewhere.com" (0) User-Password = "pass1" (0) NAS-IP-Address = 172.17.0.2 (0) NAS-Port = 1 (0) Event-Timestamp = "Sep 6 2024 13:24:58 CEST" (0) Proxy-State = 0x323531 Waking up in 0.3 seconds. (0) Expecting proxy response no later than 29.666405 seconds from now Waking up in 29.6 seconds. (0) No proxy response, giving up on request and marking it done Marking home server 192.168.0.1 port 1812 as zombie (it has not responded in 30.000000 seconds). PING: Waiting 4 seconds for response to ping (1) Sent Status-Server Id 0 from 0.0.0.0:39123 to 192.168.0.1:1812 length 70 (1) Message-Authenticator := 0x00 (1) NAS-Identifier := "Status Check 0. Are you alive?" PING: Next status packet in 30 seconds (0) ERROR: Failing proxied request for user "user@somewhere.com", due to lack of any response from home server 192.168.0.1 port 1812 (0) Clearing existing &reply: attributes (0) Found Post-Proxy-Type Fail-Authentication (0) server default { (0) Post-Proxy-Type sub-section not found. Ignoring. (0) # Executing group from file /etc/raddb/sites-enabled/default (0) } (0) Login incorrect (Home Server failed to respond): [user@somewhere.com] (from client localhost port 1) (0) There was no response configured: rejecting request (0) Using Post-Auth-Type Reject (0) # Executing group from file /etc/raddb/sites-enabled/default (0) Post-Auth-Type REJECT { (0) attr_filter.access_reject: EXPAND %{User-Name} (0) attr_filter.access_reject: --> user@somewhere.com (0) attr_filter.access_reject: Matched entry DEFAULT at line 11 (0) [attr_filter.access_reject] = updated (0) [eap] = noop (0) policy remove_reply_message_if_eap { (0) if (&reply:EAP-Message && &reply:Reply-Message) { (0) if (&reply:EAP-Message && &reply:Reply-Message) -> FALSE (0) else { (0) [noop] = noop (0) } # else = noop (0) } # policy remove_reply_message_if_eap = noop (0) } # Post-Auth-Type REJECT = updated (0) Sent Access-Reject Id 251 from 127.0.0.1:1812 to 127.0.0.1:34426 length 38 (0) Finished request Waking up in 3.9 seconds. No response to status check 1 ID 0 for home server 192.168.0.1 port 1812 Segmentation fault (core dumped) | ||||
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Hi matejv, Thanks for the detailed report. Could you help us with the testing? - Source: https://git.almalinux.org/rpms/freeradius/commit/0662efeff3ae57e560516529aaa80896003d6f7c - Build: https://build.almalinux.org/build/19450 Instructions: dnf config-manager --add-repo https://build.almalinux.org/pulp/content/builds/AlmaLinux-9-x86_64-19450-br/ dnf --refresh upgrade freeradius* |
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Hi Sorry for such late reply. I must have missed the email notification for your reply. I installed freeradius as per your instructions but radiusd crashed because current AlmaLinux comes with openssl 3.2 and RPMs were build against openssl 3.0. So I rebuilt the source RPM (https://build.almalinux.org/pulp/content/builds/AlmaLinux-9-src-19450-br/Packages/f/freeradius-3.0.21-40.el9_4.alma.1.src.rpm). That version runs fine. I also ran my tests for proxying with status-server enabled and radiusd works fine sending Status-Server packets. There are no more crashes. So I would consider this issue fixed. Thank you! |
Date Modified | Username | Field | Change |
---|---|---|---|
2024-09-06 11:46 | matejv | New Issue | |
2024-09-06 11:46 | matejv | File Added: freeradius_proxy_status-server_crash.txt | |
2024-10-01 17:48 | elkhan | Note Added: 0001066 | |
2024-10-01 17:50 | elkhan | Note Edited: 0001066 | |
2024-10-02 21:21 | elkhan | Assigned To | => elkhan |
2024-10-02 21:21 | elkhan | Status | new => feedback |
2024-11-21 11:25 | matejv | Note Added: 0001089 | |
2024-11-21 11:25 | matejv | Status | feedback => assigned |