CVE-2018-4058
Publication date 21 March 2019
Last updated 25 August 2025
Ubuntu priority
Description
An exploitable unsafe default configuration vulnerability exists in the TURN server functionality of coTURN prior to 4.5.0.9. By default, the TURN server allows relaying external traffic to the loopback interface of its own host. This can provide access to other private services running on that host, which can lead to further attacks. An attacker can set up a relay with a loopback address as the peer on an affected TURN server to trigger this vulnerability.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| coturn | 20.04 LTS focal |
Not affected
|
| 18.04 LTS bionic |
Fixed 4.5.0.7-1ubuntu2.18.04.1
|
|
| 16.04 LTS xenial |
Fixed 4.5.0.3-1ubuntu0.2
|
|
| 14.04 LTS trusty | Not in release |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
7.7 · High
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Changed |
| Confidentiality | None |
| Integrity impact | High |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N |