CVE-2023-38700 LOW

CVE-2023-38700: matrix-appservice-irc events can be crafted to leak parts of targeted messages from other bridged rooms

Vendor Matrix-Org
Product matrix-appservice-irc
Weakness CWE-200 · Info exposure
Published August 4, 2023
Last update October 3, 2024
View on NVD All CVEs

CVSS base score

3.5/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Confidentiality Low
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N

What the vulnerability does

01Description

matrix-appservice-irc is a Node.js IRC bridge for Matrix. Prior to version 1.0.1, it was possible to craft an event such that it would leak part of a targeted message event from another bridged room. This required knowing an event ID to target. Version 1.0.1n fixes this issue. As a workaround, set the `matrixHandler.eventCacheSize` config value to `0`. This workaround may impact performance.

Key dates

02Disclosure timeline

August 4, 2023 CVE published
October 3, 2024 Record updated