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89
security advisoryfedoracross site scriptingFedora 43 Coturn Important XSS Security Alert FEDORA-2026-c42d951aad
Coturn 4.13.1 What's in this release Security fixes What's Changed Null-terminate server_name in stun_is_challenge_response_str. -------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2026-c42d951aad 2026-06-24 01:32:08.556594+00:00 -------------------------------------------------------------------------------- Name : coturn Product : Fedora 43 Version : 4.13.1 Release : 1.fc43 URL : https://github.com/coturn/coturn/ Summary : TURN/STUN & ICE Server Description : The Coturn TURN Server is a VoIP media traffic NAT traversal server and gateway. It can be used as a general-purpose network traffic TURN server/gateway, too. This implementation also includes some extra features. Supported RFCs: TURN specs: - RFC 5766 - base TURN specs - RFC 6062 - TCP relaying TURN extension - RFC 6156 - IPv6 extension for TURN - Experimental DTLS support as client protocol. STUN specs: - RFC 3489 - "classic" STUN - RFC 5389 - base "new" STUN specs - RFC 5769 - test vectors for STUN protocol testing - RFC 5780 - NAT behavior discovery support The implementation fully supports the following client-to-TURN-server protocols: - UDP (per RFC 5766) - TCP (per RFC 5766 and RFC 6062) - TLS (per RFC 5766 and RFC 6062); TLS1.0/TLS1.1/TLS1.2 - DTLS (experimental non-standard feature) Supported relay protocols: - UDP (per RFC 5766) - TCP (per RFC 6062) Supported user databases (for user repository, with passwords or keys, if authentication is required): - SQLite - MySQL - PostgreSQL - Redis Redis can also be used for status and statistics storage and notification. Supported TURN authentication mechanisms: - long-term - TURN REST API (a modification of the long-term mechanism, for time-limited secret-based authentication, for WebRTC applications) The load balancing can be implemented with the following tools (either one or a combination of them): - network load-balancer server -DNS-based load balancing - built-in ALTERNATE-SERVER mechanism. -------------------------------------------------------------------------------- Update Information: Coturn 4.13.1 What's in this release Security fixes What's Changed Null-terminate server_name in stun_is_challenge_response_str Canonicalize all IPv4-in-IPv6 encodings before peer-IP checks Auto-deny coturn's own database backend endpoints as relay peers Deny link-local / ULA / site-local relay peers by default Coturn 4.13.0 What's in this release More performance improvements for --udp-recvmmsg and --multiplex-peer. If your system does not rely on TURN unique ports give multiplexing a try - it has capacity to dramatically increase performance. Security fixes What's Changed Wrap atomic everywhere Fix sendmmsg stride bug in multiplex-peer UDP batch flush Reap TURN permissions/channels via a per-thread sweep instead of per-object timers Add --udp-sendmmsg-log to observe egress sendmmsg/UDP-GSO batching Expose recvmmsg/sendmmsg UDP batch sizes as Prometheus metrics Restrict recvmmsg fast path to shared fan-in sockets (make --udp-recvmmsg useful standalone) Enable --udp-recvmmsg by default on Linux Security hardening: port parsing, admin brute-force throttle, credential log redaction, constant-time compare, OAuth bounds checks, permission cap Add continuous latency mode to stunclient Fix test_redis_format link failure Fix configure MANPREFIX typo Fix missing sqlite3 dependendcy Fix UDP receive buffer ownership -------------------------------------------------------------------------------- ChangeLog: * Tue Jun 16 2026 Robert Scheck - 4.13.1-1 - Upgrade to 4.13.1 (#2488712 #c1) * Sun Jun 14 2026 Robert Scheck - 4.13.0-1 - Upgrade to 4.13.0 (#2488712) * Fri Jun 12 2026 Yaakov Selkowitz - 4.12.0-3 - Rebuilt for openssl 4.0 -------------------------------------------------------------------------------- References: [ 1 ] Bug #2490558 - CVE-2026-43915 coturn: Coturn: Cross-Site Scripting (XSS) viacrafted username in TURN allocation https://bugzilla.redhat.com/show_bug.cgi?id=2490558 -------------------------------------------------------------------------------- This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-c42d951aad' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/keys -------------------------------------------------------------------------------- -- _______________________________________________ package-announce mailing list --
Jun 23, 2026
•Important
Fedora
89
security advisoryfedoraupdateFedora 44 Coturn 4.13.1 Security Fix Cross-Site Scripting Vulnerability
Coturn 4.13.1 What's in this release Security fixes What's Changed Null-terminate server_name in stun_is_challenge_response_str. -------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2026-dda1360c18 2026-06-24 01:28:48.584565+00:00 -------------------------------------------------------------------------------- Name : coturn Product : Fedora 44 Version : 4.13.1 Release : 1.fc44 URL : https://github.com/coturn/coturn/ Summary : TURN/STUN & ICE Server Description : The Coturn TURN Server is a VoIP media traffic NAT traversal server and gateway. It can be used as a general-purpose network traffic TURN server/gateway, too. This implementation also includes some extra features. Supported RFCs: TURN specs: - RFC 5766 - base TURN specs - RFC 6062 - TCP relaying TURN extension - RFC 6156 - IPv6 extension for TURN - Experimental DTLS support as client protocol. STUN specs: - RFC 3489 - "classic" STUN - RFC 5389 - base "new" STUN specs - RFC 5769 - test vectors for STUN protocol testing - RFC 5780 - NAT behavior discovery support The implementation fully supports the following client-to-TURN-server protocols: - UDP (per RFC 5766) - TCP (per RFC 5766 and RFC 6062) - TLS (per RFC 5766 and RFC 6062); TLS1.0/TLS1.1/TLS1.2 - DTLS (experimental non-standard feature) Supported relay protocols: - UDP (per RFC 5766) - TCP (per RFC 6062) Supported user databases (for user repository, with passwords or keys, if authentication is required): - SQLite - MySQL - PostgreSQL - Redis Redis can also be used for status and statistics storage and notification. Supported TURN authentication mechanisms: - long-term - TURN REST API (a modification of the long-term mechanism, for time-limited secret-based authentication, for WebRTC applications) The load balancing can be implemented with the following tools (either one or a combination of them): - network load-balancer server -DNS-based load balancing - built-in ALTERNATE-SERVER mechanism. -------------------------------------------------------------------------------- Update Information: Coturn 4.13.1 What's in this release Security fixes What's Changed Null-terminate server_name in stun_is_challenge_response_str Canonicalize all IPv4-in-IPv6 encodings before peer-IP checks Auto-deny coturn's own database backend endpoints as relay peers Deny link-local / ULA / site-local relay peers by default Coturn 4.13.0 What's in this release More performance improvements for --udp-recvmmsg and --multiplex-peer. If your system does not rely on TURN unique ports give multiplexing a try - it has capacity to dramatically increase performance. Security fixes What's Changed Wrap atomic everywhere Fix sendmmsg stride bug in multiplex-peer UDP batch flush Reap TURN permissions/channels via a per-thread sweep instead of per-object timers Add --udp-sendmmsg-log to observe egress sendmmsg/UDP-GSO batching Expose recvmmsg/sendmmsg UDP batch sizes as Prometheus metrics Restrict recvmmsg fast path to shared fan-in sockets (make --udp-recvmmsg useful standalone) Enable --udp-recvmmsg by default on Linux Security hardening: port parsing, admin brute-force throttle, credential log redaction, constant-time compare, OAuth bounds checks, permission cap Add continuous latency mode to stunclient Fix test_redis_format link failure Fix configure MANPREFIX typo Fix missing sqlite3 dependendcy Fix UDP receive buffer ownership -------------------------------------------------------------------------------- ChangeLog: * Tue Jun 16 2026 Robert Scheck - 4.13.1-1 - Upgrade to 4.13.1 (#2488712 #c1) * Sun Jun 14 2026 Robert Scheck - 4.13.0-1 - Upgrade to 4.13.0 (#2488712) * Fri Jun 12 2026 Yaakov Selkowitz - 4.12.0-3 - Rebuilt for openssl 4.0 -------------------------------------------------------------------------------- References: [ 1 ] Bug #2490558 - CVE-2026-43915 coturn: Coturn: Cross-Site Scripting (XSS) viacrafted username in TURN allocation https://bugzilla.redhat.com/show_bug.cgi?id=2490558 -------------------------------------------------------------------------------- This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-dda1360c18' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/keys -------------------------------------------------------------------------------- -- _______________________________________________ package-announce mailing list --
Jun 23, 2026
•Important
Fedora
203
security advisorymoderateremote DoSMageia discerns moderate remote DoS risk from CVE-2026-40613 in Coturn
Security update. Publication date: 17 Jun 2026 URL: https://advisories.mageia.org/MGASA-2026-0217.html Type: security Affected Mageia releases: 9 CVE: CVE-2026-40613 Description: CVE-2026-40613 Coturn: Misaligned Memory Access in coturn STUN Attribute Parser (Remote DoS on ARM64) References: - https://bugs.mageia.org/show_bug.cgi?id=35430 - https://lists.fedoraproject.org/archives/list/
Jun 17, 2026
•moderate
Mageia
89
security advisoryfedoraformat stringFedora 42 Coturn 4.11.0 Advisory for Fixes on Memory Leak Format-String
Coturn 4.11.0 Fix prometheus response memory leak introduced in 4.10.0 Use constant-time compare for STUN MESSAGE-INTEGRITY HMAC Fix format-string injection in Redis DB driver Abort on malformed allowed/denied-peer-ip at startup. -------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2026-dfa8ea5809 2026-05-18 01:23:32.591546+00:00 -------------------------------------------------------------------------------- Name : coturn Product : Fedora 42 Version : 4.11.0 Release : 1.fc42 URL : https://github.com/coturn/coturn/ Summary : TURN/STUN & ICE Server Description : The Coturn TURN Server is a VoIP media traffic NAT traversal server and gateway. It can be used as a general-purpose network traffic TURN server/gateway, too. This implementation also includes some extra features. Supported RFCs: TURN specs: - RFC 5766 - base TURN specs - RFC 6062 - TCP relaying TURN extension - RFC 6156 - IPv6 extension for TURN - Experimental DTLS support as client protocol. STUN specs: - RFC 3489 - "classic" STUN - RFC 5389 - base "new" STUN specs - RFC 5769 - test vectors for STUN protocol testing - RFC 5780 - NAT behavior discovery support The implementation fully supports the following client-to-TURN-server protocols: - UDP (per RFC 5766) - TCP (per RFC 5766 and RFC 6062) - TLS (per RFC 5766 and RFC 6062); TLS1.0/TLS1.1/TLS1.2 - DTLS (experimental non-standard feature) Supported relay protocols: - UDP (per RFC 5766) - TCP (per RFC 6062) Supported user databases (for user repository, with passwords or keys, if authentication is required): - SQLite - MySQL - PostgreSQL - Redis Redis can also be used for status and statistics storage and notification. Supported TURN authentication mechanisms: - long-term - TURN REST API (a modification of the long-term mechanism, for time-limited secret-based authentication, for WebRTC applications) The load balancing can be implemented withthe following tools (either one or a combination of them): - network load-balancer server - DNS-based load balancing - built-in ALTERNATE-SERVER mechanism. -------------------------------------------------------------------------------- Update Information: Coturn 4.11.0 Fix prometheus response memory leak introduced in 4.10.0 Use constant-time compare for STUN MESSAGE-INTEGRITY HMAC Fix format-string injection in Redis DB driver Abort on malformed allowed/denied-peer-ip at startup Pin session origin only after MESSAGE-INTEGRITY validates Fix build failure: define _GNU_SOURCE for recvmmsg() on Linux Drop udp_relay_servers_number config and clean up dead UDP id-space Add Unity-based unit test scaffolding Delete log line per relay thread on start Out of bound HTTP detection in parser Extend STUN client fuzz builder coverage Extend fuzzing coverage and enable local fuzzing in a container Cover all public stun_buffer.c wrappers in FuzzStunClient HTTP parsing fixes Unblock fuzz coverage for is_http and rare STUN attributes Seed address-mapping table in fuzz initializer Add deterministic challenge-response builder to FuzzStun Add fuzz coverage for integrity helpers Hoist turn_server_get_engine() out of per-packet hot path Inline addr_cpy() in the header Trim two redundant checks from per-packet relay hot path Inline get_ioa_addr_len() in the header Cache hot lookups in TURN data-path handlers Load generator mode in turnutils_uclient Filc harness and pointer typedefs -------------------------------------------------------------------------------- ChangeLog: * Sat May 9 2026 Robert Scheck - 4.11.0-1 - Upgrade to 4.11.0 (#2466643) -------------------------------------------------------------------------------- References: [ 1 ] Bug #2466643 - coturn-4.11.0 is available https://bugzilla.redhat.com/show_bug.cgi?id=2466643 -------------------------------------------------------------------------------- This update can be installed with the "dnf" update program.Use su -c 'dnf upgrade --advisory FEDORA-2026-dfa8ea5809' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/keys -------------------------------------------------------------------------------- -- _______________________________________________ package-announce mailing list --
May 18, 2026
•Important
Fedora
89
security advisoryfedoraimportantFedora 43 Coturn Important Memory Leak and Injection Fix 2026-f0fbd93125
Coturn 4.11.0 Fix prometheus response memory leak introduced in 4.10.0 Use constant-time compare for STUN MESSAGE-INTEGRITY HMAC Fix format-string injection in Redis DB driver Abort on malformed allowed/denied-peer-ip at startup. -------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2026-f0fbd93125 2026-05-18 00:58:32.597402+00:00 -------------------------------------------------------------------------------- Name : coturn Product : Fedora 43 Version : 4.11.0 Release : 1.fc43 URL : https://github.com/coturn/coturn/ Summary : TURN/STUN & ICE Server Description : The Coturn TURN Server is a VoIP media traffic NAT traversal server and gateway. It can be used as a general-purpose network traffic TURN server/gateway, too. This implementation also includes some extra features. Supported RFCs: TURN specs: - RFC 5766 - base TURN specs - RFC 6062 - TCP relaying TURN extension - RFC 6156 - IPv6 extension for TURN - Experimental DTLS support as client protocol. STUN specs: - RFC 3489 - "classic" STUN - RFC 5389 - base "new" STUN specs - RFC 5769 - test vectors for STUN protocol testing - RFC 5780 - NAT behavior discovery support The implementation fully supports the following client-to-TURN-server protocols: - UDP (per RFC 5766) - TCP (per RFC 5766 and RFC 6062) - TLS (per RFC 5766 and RFC 6062); TLS1.0/TLS1.1/TLS1.2 - DTLS (experimental non-standard feature) Supported relay protocols: - UDP (per RFC 5766) - TCP (per RFC 6062) Supported user databases (for user repository, with passwords or keys, if authentication is required): - SQLite - MySQL - PostgreSQL - Redis Redis can also be used for status and statistics storage and notification. Supported TURN authentication mechanisms: - long-term - TURN REST API (a modification of the long-term mechanism, for time-limited secret-based authentication, for WebRTC applications) The load balancing can be implemented withthe following tools (either one or a combination of them): - network load-balancer server - DNS-based load balancing - built-in ALTERNATE-SERVER mechanism. -------------------------------------------------------------------------------- Update Information: Coturn 4.11.0 Fix prometheus response memory leak introduced in 4.10.0 Use constant-time compare for STUN MESSAGE-INTEGRITY HMAC Fix format-string injection in Redis DB driver Abort on malformed allowed/denied-peer-ip at startup Pin session origin only after MESSAGE-INTEGRITY validates Fix build failure: define _GNU_SOURCE for recvmmsg() on Linux Drop udp_relay_servers_number config and clean up dead UDP id-space Add Unity-based unit test scaffolding Delete log line per relay thread on start Out of bound HTTP detection in parser Extend STUN client fuzz builder coverage Extend fuzzing coverage and enable local fuzzing in a container Cover all public stun_buffer.c wrappers in FuzzStunClient HTTP parsing fixes Unblock fuzz coverage for is_http and rare STUN attributes Seed address-mapping table in fuzz initializer Add deterministic challenge-response builder to FuzzStun Add fuzz coverage for integrity helpers Hoist turn_server_get_engine() out of per-packet hot path Inline addr_cpy() in the header Trim two redundant checks from per-packet relay hot path Inline get_ioa_addr_len() in the header Cache hot lookups in TURN data-path handlers Load generator mode in turnutils_uclient Filc harness and pointer typedefs -------------------------------------------------------------------------------- ChangeLog: * Sat May 9 2026 Robert Scheck - 4.11.0-1 - Upgrade to 4.11.0 (#2466643) -------------------------------------------------------------------------------- References: [ 1 ] Bug #2466643 - coturn-4.11.0 is available https://bugzilla.redhat.com/show_bug.cgi?id=2466643 -------------------------------------------------------------------------------- This update can be installed with the "dnf" update program.Use su -c 'dnf upgrade --advisory FEDORA-2026-f0fbd93125' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/keys -------------------------------------------------------------------------------- -- _______________________________________________ package-announce mailing list --
May 18, 2026
•Important
Fedora
89
security advisorydenial of servicefedoraFedora 44 Coturn 4.10.0 Moderate STUN Memory Access Issue 2026-1c11dc3e37
Coturn 4.10.0 Performance Add Linux-only recvmmsg client receive path for DTLS/UDP listener Skip response buffer allocation for STUN indications Remove mutex from per-thread super_memory allocator. -------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2026-1c11dc3e37 2026-04-25 01:21:36.173379+00:00 -------------------------------------------------------------------------------- Name : coturn Product : Fedora 44 Version : 4.10.0 Release : 1.fc44 URL : https://github.com/coturn/coturn/ Summary : TURN/STUN & ICE Server Description : The Coturn TURN Server is a VoIP media traffic NAT traversal server and gateway. It can be used as a general-purpose network traffic TURN server/gateway, too. This implementation also includes some extra features. Supported RFCs: TURN specs: - RFC 5766 - base TURN specs - RFC 6062 - TCP relaying TURN extension - RFC 6156 - IPv6 extension for TURN - Experimental DTLS support as client protocol. STUN specs: - RFC 3489 - "classic" STUN - RFC 5389 - base "new" STUN specs - RFC 5769 - test vectors for STUN protocol testing - RFC 5780 - NAT behavior discovery support The implementation fully supports the following client-to-TURN-server protocols: - UDP (per RFC 5766) - TCP (per RFC 5766 and RFC 6062) - TLS (per RFC 5766 and RFC 6062); TLS1.0/TLS1.1/TLS1.2 - DTLS (experimental non-standard feature) Supported relay protocols: - UDP (per RFC 5766) - TCP (per RFC 6062) Supported user databases (for user repository, with passwords or keys, if authentication is required): - SQLite - MySQL - PostgreSQL - Redis Redis can also be used for status and statistics storage and notification. Supported TURN authentication mechanisms: - long-term - TURN REST API (a modification of the long-term mechanism, for time-limited secret-based authentication, for WebRTC applications) The load balancing can be implemented with the following tools (either one ora combination of them): - network load-balancer server - DNS-based load balancing - built-in ALTERNATE-SERVER mechanism. -------------------------------------------------------------------------------- Update Information: Coturn 4.10.0 Performance Add Linux-only recvmmsg client receive path for DTLS/UDP listener Skip response buffer allocation for STUN indications Remove mutex from per-thread super_memory allocator Eliminate mutex and reduce copies on auth message dispatch Replace mutex_bps with lock-free atomics for bandwidth tracking Remove unused mutex from ur_map structure WebRTC Auth optimization path Improve worst case scenario - avoid memory allocation Memory issues Fix null pointer dereferences in post_parse() Fix stack buffer overflow in OAuth token decoding Fix uint16_t truncation overflow in stun_get_message_len_str() Initialize variables before use Security CVE-2026-40613 Misaligned Memory Access STUN Attribute Parser General Improvements Disable reason string in response messages to reduce amplification factor Keep only NEV_UDP_SOCKET_PER_THREAD network engine Replace perror with logging Extend seed corpus and add more fuzzing scenarios Update config and Readme files about deprecated TLSv1/1.1 Restore RFC 3489 (old STUN) backward compatibility broken since 4.7.0 Change port identifiers to use uint16_t Fixes: run_tests.sh and no db Improve PostgreSQL.md clarity Add session usage reporting callback to TURN database driver CLI interface is disabled by default -------------------------------------------------------------------------------- ChangeLog: * Fri Apr 17 2026 Robert Scheck - 4.10.0-1 - Upgrade to 4.10.0 (#2458094) -------------------------------------------------------------------------------- References: [ 1 ] Bug #2460213 - CVE-2026-40613 coturn: coturn: Denial of Service due to misaligned memory reads from crafted STUN messages https://bugzilla.redhat.com/show_bug.cgi?id=2460213 -------------------------------------------------------------------------------- This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-1c11dc3e37' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/keys -------------------------------------------------------------------------------- -- _______________________________________________ package-announce mailing list --
Apr 25, 2026
•Important
Fedora
89
security advisorydenial of servicefedoraFedora 43 Coturn 4.10.0 Security Update CVE-2026-40613 Denial of Service
Coturn 4.10.0 Performance Add Linux-only recvmmsg client receive path for DTLS/UDP listener Skip response buffer allocation for STUN indications Remove mutex from per-thread super_memory allocator. -------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2026-1adc5f1ef8 2026-04-25 01:42:21.312856+00:00 -------------------------------------------------------------------------------- Name : coturn Product : Fedora 43 Version : 4.10.0 Release : 1.fc43 URL : https://github.com/coturn/coturn/ Summary : TURN/STUN & ICE Server Description : The Coturn TURN Server is a VoIP media traffic NAT traversal server and gateway. It can be used as a general-purpose network traffic TURN server/gateway, too. This implementation also includes some extra features. Supported RFCs: TURN specs: - RFC 5766 - base TURN specs - RFC 6062 - TCP relaying TURN extension - RFC 6156 - IPv6 extension for TURN - Experimental DTLS support as client protocol. STUN specs: - RFC 3489 - "classic" STUN - RFC 5389 - base "new" STUN specs - RFC 5769 - test vectors for STUN protocol testing - RFC 5780 - NAT behavior discovery support The implementation fully supports the following client-to-TURN-server protocols: - UDP (per RFC 5766) - TCP (per RFC 5766 and RFC 6062) - TLS (per RFC 5766 and RFC 6062); TLS1.0/TLS1.1/TLS1.2 - DTLS (experimental non-standard feature) Supported relay protocols: - UDP (per RFC 5766) - TCP (per RFC 6062) Supported user databases (for user repository, with passwords or keys, if authentication is required): - SQLite - MySQL - PostgreSQL - Redis Redis can also be used for status and statistics storage and notification. Supported TURN authentication mechanisms: - long-term - TURN REST API (a modification of the long-term mechanism, for time-limited secret-based authentication, for WebRTC applications) The load balancing can be implemented with the following tools (either one ora combination of them): - network load-balancer server - DNS-based load balancing - built-in ALTERNATE-SERVER mechanism. -------------------------------------------------------------------------------- Update Information: Coturn 4.10.0 Performance Add Linux-only recvmmsg client receive path for DTLS/UDP listener Skip response buffer allocation for STUN indications Remove mutex from per-thread super_memory allocator Eliminate mutex and reduce copies on auth message dispatch Replace mutex_bps with lock-free atomics for bandwidth tracking Remove unused mutex from ur_map structure WebRTC Auth optimization path Improve worst case scenario - avoid memory allocation Memory issues Fix null pointer dereferences in post_parse() Fix stack buffer overflow in OAuth token decoding Fix uint16_t truncation overflow in stun_get_message_len_str() Initialize variables before use Security CVE-2026-40613 Misaligned Memory Access STUN Attribute Parser General Improvements Disable reason string in response messages to reduce amplification factor Keep only NEV_UDP_SOCKET_PER_THREAD network engine Replace perror with logging Extend seed corpus and add more fuzzing scenarios Update config and Readme files about deprecated TLSv1/1.1 Restore RFC 3489 (old STUN) backward compatibility broken since 4.7.0 Change port identifiers to use uint16_t Fixes: run_tests.sh and no db Improve PostgreSQL.md clarity Add session usage reporting callback to TURN database driver CLI interface is disabled by default -------------------------------------------------------------------------------- ChangeLog: * Fri Apr 17 2026 Robert Scheck - 4.10.0-1 - Upgrade to 4.10.0 (#2458094) -------------------------------------------------------------------------------- References: [ 1 ] Bug #2460213 - CVE-2026-40613 coturn: coturn: Denial of Service due to misaligned memory reads from crafted STUN messages https://bugzilla.redhat.com/show_bug.cgi?id=2460213 -------------------------------------------------------------------------------- This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-1adc5f1ef8' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/keys -------------------------------------------------------------------------------- -- _______________________________________________ package-announce mailing list --
Apr 25, 2026
•Important
Fedora
89
security advisorydenial of servicefedoraFedora 42 Coturn Faces Severe Memory Problems with CVE-2026-40613
Coturn 4.10.0 Performance Add Linux-only recvmmsg client receive path for DTLS/UDP listener Skip response buffer allocation for STUN indications Remove mutex from per-thread super_memory allocator. -------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2026-e673311164 2026-04-25 00:52:53.710799+00:00 -------------------------------------------------------------------------------- Name : coturn Product : Fedora 42 Version : 4.10.0 Release : 1.fc42 URL : https://github.com/coturn/coturn/ Summary : TURN/STUN & ICE Server Description : The Coturn TURN Server is a VoIP media traffic NAT traversal server and gateway. It can be used as a general-purpose network traffic TURN server/gateway, too. This implementation also includes some extra features. Supported RFCs: TURN specs: - RFC 5766 - base TURN specs - RFC 6062 - TCP relaying TURN extension - RFC 6156 - IPv6 extension for TURN - Experimental DTLS support as client protocol. STUN specs: - RFC 3489 - "classic" STUN - RFC 5389 - base "new" STUN specs - RFC 5769 - test vectors for STUN protocol testing - RFC 5780 - NAT behavior discovery support The implementation fully supports the following client-to-TURN-server protocols: - UDP (per RFC 5766) - TCP (per RFC 5766 and RFC 6062) - TLS (per RFC 5766 and RFC 6062); TLS1.0/TLS1.1/TLS1.2 - DTLS (experimental non-standard feature) Supported relay protocols: - UDP (per RFC 5766) - TCP (per RFC 6062) Supported user databases (for user repository, with passwords or keys, if authentication is required): - SQLite - MySQL - PostgreSQL - Redis Redis can also be used for status and statistics storage and notification. Supported TURN authentication mechanisms: - long-term - TURN REST API (a modification of the long-term mechanism, for time-limited secret-based authentication, for WebRTC applications) The load balancing can be implemented with the following tools (either one ora combination of them): - network load-balancer server - DNS-based load balancing - built-in ALTERNATE-SERVER mechanism. -------------------------------------------------------------------------------- Update Information: Coturn 4.10.0 Performance Add Linux-only recvmmsg client receive path for DTLS/UDP listener Skip response buffer allocation for STUN indications Remove mutex from per-thread super_memory allocator Eliminate mutex and reduce copies on auth message dispatch Replace mutex_bps with lock-free atomics for bandwidth tracking Remove unused mutex from ur_map structure WebRTC Auth optimization path Improve worst case scenario - avoid memory allocation Memory issues Fix null pointer dereferences in post_parse() Fix stack buffer overflow in OAuth token decoding Fix uint16_t truncation overflow in stun_get_message_len_str() Initialize variables before use Security CVE-2026-40613 Misaligned Memory Access STUN Attribute Parser General Improvements Disable reason string in response messages to reduce amplification factor Keep only NEV_UDP_SOCKET_PER_THREAD network engine Replace perror with logging Extend seed corpus and add more fuzzing scenarios Update config and Readme files about deprecated TLSv1/1.1 Restore RFC 3489 (old STUN) backward compatibility broken since 4.7.0 Change port identifiers to use uint16_t Fixes: run_tests.sh and no db Improve PostgreSQL.md clarity Add session usage reporting callback to TURN database driver CLI interface is disabled by default -------------------------------------------------------------------------------- ChangeLog: * Fri Apr 17 2026 Robert Scheck - 4.10.0-1 - Upgrade to 4.10.0 (#2458094) -------------------------------------------------------------------------------- References: [ 1 ] Bug #2460213 - CVE-2026-40613 coturn: coturn: Denial of Service due to misaligned memory reads from crafted STUN messages https://bugzilla.redhat.com/show_bug.cgi?id=2460213 -------------------------------------------------------------------------------- This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-e673311164' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/keys -------------------------------------------------------------------------------- -- _______________________________________________ package-announce mailing list --
Apr 25, 2026
•Critical
Fedora
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