# CVE-2018-4059: coturn: An exploitable unsafe default configuration vulnerability exists in the TURN server function of coTURN prior to versi...

CVE-2018-4059 is fixed in coturn on 1 platform by coturn 4.5.0.7-1ubuntu2.18.04.1 (version 4.5.0.7-1ubuntu2.18.04.1), released March 21, 2019. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2018-4059
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0190
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 21, 2019

## Description

An exploitable unsafe default configuration vulnerability exists in the TURN server function of coTURN prior to version 4.5.0.9. By default, the TURN server runs an unauthenticated telnet admin portal on the loopback interface. This can provide administrator access to the TURN server configuration, which can lead to additional attacks. An attacker who can get access to the telnet port can gain administrator access to the TURN server.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | coturn Ubuntu 18.04.6 LTS (bionic) | 4.5.0.7-1ubuntu2.18.04.1 | [coturn 4.5.0.7-1ubuntu2.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-coturn-4.5.0.7-1ubuntu2.18.04.1.md) | Mar 21, 2019 |

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Data as of 2026-11-07T12:40:37Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo