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Fedora 44 : coturn (2026-dda1360c18)

medium Nessus Plugin ID 322356

Synopsis

The remote Fedora host is missing one or more security updates.

Description

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-dda1360c18 advisory.

 # 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


Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected coturn package.

See Also

https://bodhi.fedoraproject.org/updates/FEDORA-2026-dda1360c18

Plugin Details

Severity: Medium

ID: 322356

File Name: fedora_2026-dda1360c18.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 6/24/2026

Updated: 6/24/2026

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.8

CVSS v2

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.1

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N

CVSS Score Source: CVE-2026-43915

CVSS v3

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:fedoraproject:fedora:44, p-cpe:/a:fedoraproject:fedora:coturn

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 6/16/2026

Vulnerability Publication Date: 6/16/2026

Reference Information

CVE: CVE-2026-43915