CVE-2024-42369 – matrix-js-sdk

Package

Manager: npm
Name: matrix-js-sdk
Vulnerable Version: >=0 <34.3.1

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:L

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L

EPSS: 0.00024 pctl0.04984

Details

matrix-js-sdk will freeze when a user sets a room with itself as a its predecessor ### 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](https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:L&version=3.1)) 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.

Metadata

Created: 2024-08-20T18:35:27Z
Modified: 2024-08-20T18:35:28Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/08/GHSA-vhr5-g3pm-49fm/GHSA-vhr5-g3pm-49fm.json
CWE IDs: ["CWE-674"]
Alternative ID: GHSA-vhr5-g3pm-49fm
Finding: F067
Auto approve: 1