CVE-2024-50336 – matrix-js-sdk

Package

Manager: npm
Name: matrix-js-sdk
Vulnerable Version: >=0 <34.11.1

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C

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

EPSS: 0.00487 pctl0.64444

Details

matrix-js-sdk has insufficient MXC URI validation which allows client-side path traversal ### Summary matrix-js-sdk before 34.11.0 is vulnerable to client-side path traversal via crafted MXC URIs. A malicious room member can trigger clients based on the matrix-js-sdk to issue arbitrary authenticated GET requests to the client's homeserver. ### Details The Matrix specification demands homeservers to [perform validation](https://spec.matrix.org/v1.12/client-server-api/#security-considerations-5) of the `server-name` and `media-id` components of MXC URIs with the intent to prevent path traversal. However, it is not mentioned that a similar check must also be performed on the client to prevent *client-side* path traversal. matrix-js-sdk fails to perform this validation. ### Patches Fixed in matrix-js-sdk 34.11.1. ### Workarounds None. ### References - https://spec.matrix.org/v1.12/client-server-api/#security-considerations-5 - https://blog.doyensec.com/2024/07/02/cspt2csrf.html

Metadata

Created: 2024-11-12T19:54:38Z
Modified: 2024-11-12T19:54:38Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/11/GHSA-xvg8-m4x3-w6xr/GHSA-xvg8-m4x3-w6xr.json
CWE IDs: ["CWE-22"]
Alternative ID: GHSA-xvg8-m4x3-w6xr
Finding: F063
Auto approve: 1