Debian DLA-2522-1 : coturn security update

high Nessus Plugin ID 144924

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Synopsis

The remote Debian host is missing a security update.

Description

A flaw was discovered in coturn, a TURN and STUN server for VoIP. By default coturn does not allow peers on the loopback addresses (127.x.x.x and ::1). A remote attacker can bypass the protection via a specially crafted request using a peer address of '0.0.0.0' and trick coturn in relaying to the loopback interface. If listening on IPv6 the loopback interface can also be reached by using either [::1] or [::] as the address.

For Debian 9 stretch, this problem has been fixed in version 4.5.0.5-1+deb9u3.

We recommend that you upgrade your coturn packages.

For the detailed security status of coturn please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/coturn

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected coturn package.

Plugin Details

Severity: High

ID: 144924

File Name: debian_DLA-2522.nasl

Version: 1.4

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 1/13/2021

Updated: 1/30/2024

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

Risk Information

VPR

Risk Factor: Low

Score: 3.8

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5

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

CVSS Score Source: CVE-2020-26262

CVSS v3

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:coturn, cpe:/o:debian:debian_linux:9.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/12/2021

Vulnerability Publication Date: 1/13/2021

Reference Information

CVE: CVE-2020-26262

Detections

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