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CVE-2018-4058

Published: 21 March 2019

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.

Priority

Medium

Cvss 3 Severity Score

7.7

Score breakdown

Status

Package Release Status
coturn
Launchpad, Ubuntu, Debian
upstream
Released (4.5.1.0-1)
precise Does not exist

trusty Does not exist

xenial
Released (4.5.0.3-1ubuntu0.2)
bionic
Released (4.5.0.7-1ubuntu2.18.04.1)
cosmic
Released (4.5.0.7-1ubuntu2.18.10.1)
disco Not vulnerable
(4.5.1.0-1build1)
eoan Not vulnerable
(4.5.1.1-1.1build1)
focal Not vulnerable
(4.5.1.1-1.1build1)

Severity score breakdown

Parameter Value
Base score 7.7
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