Vulnerabilities > CVE-2022-39202 - Improper Privilege Management vulnerability in Matrix IRC Bridge

CVSS 6.3 - MEDIUM

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

LOW

Integrity impact

LOW

Availability impact

LOW

network

low complexity

matrix

CWE-269

NVD

Published: 2022-09-13

Updated: 2024-11-21

Summary

matrix-appservice-irc is an open source Node.js IRC bridge for Matrix. The Internet Relay Chat (IRC) protocol allows you to specify multiple modes in a single mode command. Due to a bug in the underlying matrix-org/node-irc library, affected versions of matrix-appservice-irc perform parsing of such modes incorrectly, potentially resulting in the wrong user being given permissions. Mode commands can only be executed by privileged users, so this can only be abused if an operator is tricked into running the command on behalf of an attacker. The vulnerability has been patched in matrix-appservice-irc 0.35.0. As a workaround users should refrain from entering mode commands suggested by untrusted users. Avoid using multiple modes in a single command.

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

Common Weakness Enumeration (CWE)

CWE-269 - Improper Privilege Management

Common Attack Pattern Enumeration and Classification (CAPEC)

Restful Privilege Elevation
Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.

Summary

Vulnerable Configurations

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

References