GitHub Advisoryadvisory · npm

GHSA-vhr5-g3pm-49fm matrix-js-sdk will freeze when a user sets a room with itself as a its predecessor

MEDIUM Published 2024-08-20 Modified 2024-08-20 Official page ↗
Aliases
CVE-2024-42369
Ecosystem
npm
Packages
matrix-js-sdk
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:L
Weaknesses
CWE-674
Reviewed
2024-08-20

Affected packages

• npm matrix-js-sdk: < 34.3.1 → fixed in 34.3.1

Description

Impact A malicious homeserver can craft a room or room structure such that the predecessors form a cycle. The matrix-js-sdk's `getRoomUpgradeHistory` function will infinitely recurse in this case, causing the code to hang. This method is public but also called by the 'leaveRoomChain()' method, so leaving a room will also trigger the bug. Even if the CVSS score would be 4.1 (AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:L) we classify this as High severity issue. Patches This was patched in matrix-js-sdk 34.3.1. Workarounds Sanity check rooms before passing them to the matrix-js-sdk or avoid calling either `getRoomUpgradeHistory` or `leaveRoomChain`. References N/A.

Related

Alias · CVE (1)

  • CVE-2024-42369 matrix-js-sdk is a Matrix messaging protocol Client-Server SDK for JavaScript. vulnerability

Weakness · CWE (1)

  • CWE-674 Uncontrolled Recursion weakness

References