Vulnerabilities > CVE-2022-39203 - Unspecified vulnerability in Matrix IRC Bridge

CVSS 8.8 - HIGH

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

LOW

Confidentiality impact

HIGH

Integrity impact

HIGH

Availability impact

HIGH

network

low complexity

matrix

NVD

Published: 2022-09-13

Updated: 2024-11-21

Summary

matrix-appservice-irc is an open source Node.js IRC bridge for Matrix. Attackers can specify a specific string of characters, which would confuse the bridge into combining an attacker-owned channel and an existing channel, allowing them to grant themselves permissions in the channel. The vulnerability has been patched in matrix-appservice-irc 0.35.0. As a workaround operators may disable dynamic channel joining via `dynamicChannels.enabled` to prevent users from joining new channels, which prevents any new channels being bridged outside of what is already bridged, and what is specified in the config.

Vulnerable Configurations

Part	Description	Count
Application	Matrix Matrix Matrix IRC Bridge 0.1.1 Matrix Matrix IRC Bridge 0.3.0 Matrix Matrix IRC Bridge 0.3.1 Matrix Matrix IRC Bridge 0.4.0 Matrix Matrix IRC Bridge 0.5.0 Matrix Matrix IRC Bridge 0.6.0 Matrix Matrix IRC Bridge 0.7.0 Matrix Matrix IRC Bridge 0.7.1 Matrix Matrix IRC Bridge 0.7.2 Matrix Matrix IRC Bridge 0.8.0 Matrix Matrix IRC Bridge 0.10.0 Matrix Matrix IRC Bridge 0.10.1 Matrix Matrix IRC Bridge 0.11.0 Matrix Matrix IRC Bridge 0.11.1 Matrix Matrix IRC Bridge 0.11.2 Matrix Matrix IRC Bridge 0.12.0 Matrix Matrix IRC Bridge 0.13.0 Matrix Matrix IRC Bridge 0.13.1 Matrix Matrix IRC Bridge 0.14.0 Matrix Matrix IRC Bridge 0.14.1 Matrix Matrix IRC Bridge 0.15.0 Matrix Matrix IRC Bridge 0.15.1 Matrix Matrix IRC Bridge 0.15.2 Matrix Matrix IRC Bridge 0.16.0 Matrix Matrix IRC Bridge 0.17.0 Matrix Matrix IRC Bridge 0.17.1 Matrix Matrix IRC Bridge 0.18.0 Matrix Matrix IRC Bridge 0.19.0 Matrix Matrix IRC Bridge 0.20.1 Matrix Matrix IRC Bridge 0.20.2 Matrix Matrix IRC Bridge 0.20.3 Matrix Matrix IRC Bridge 0.21.0 Matrix Matrix IRC Bridge 0.22.0 Matrix Matrix IRC Bridge 0.23.0 Matrix Matrix IRC Bridge 0.24.0 Matrix Matrix IRC Bridge 0.25.0 Matrix Matrix IRC Bridge 0.26.0 Matrix Matrix IRC Bridge 0.26.1 Matrix Matrix IRC Bridge 0.27.0 Matrix Matrix IRC Bridge 0.29.0 Matrix Matrix IRC Bridge 0.30.0 Matrix Matrix IRC Bridge 0.31.0 Matrix Matrix IRC Bridge 0.32.0 Matrix Matrix IRC Bridge 0.32.1 Matrix Matrix IRC Bridge 0.33.0 Matrix Matrix IRC Bridge 0.33.1 Matrix Matrix IRC Bridge 0.34.0	47

Summary

Vulnerable Configurations

References