Alpine: multiple coturn packages: security update to 4.5.1.3-r0 (deprecated)

high Tenable Cloud Security Plugin ID 400296

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

- Coturn is free open source implementation of TURN and STUN Server. Coturn before version 4.5.2 by default
does not allow peers to connect and relay packets to loopback addresses in the range of `127.x.x.x`.
However, it was observed that when sending a `CONNECT` request with the `XOR-PEER-ADDRESS` value of
`0.0.0.0`, a successful response was received and subsequently, `CONNECTIONBIND` also received a
successful response. Coturn then is able to relay packets to the loopback interface. Additionally, when
coturn is listening on IPv6, which is default, the loopback interface can also be reached by making use of
either `[::1]` or `[::]` as the peer address. By using the address `0.0.0.0` as the peer address, a
malicious user will be able to relay packets to the loopback interface, unless `--denied-peer-ip=0.0.0.0`
(or similar) has been specified. Since the default configuration implies that loopback peers are not
allowed, coturn administrators may choose to not set the `denied-peer-ip` setting. The issue patched in
version 4.5.2. As a workaround the addresses in the address block `0.0.0.0/8`, `[::1]` and `[::]` should
be denied by default unless `--allow-loopback-peers` has been specified. (CVE-2020-26262)

Plugin Details

Severity: High

ID: 400296

Version: Revision 1.23

Type: Local

Family: Alpine Linux Local Security Checks

Published: 8/16/2023

Updated: 7/2/2026

Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 2.3

Percentile: 8.69

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/26/2021

Vulnerability Publication Date: 1/11/2021

Reference Information

CVE: CVE-2020-26262

Detections

Analytics