CVE-2023-41318 – github.com/turt2live/matrix-media-repo

Package

Manager: go
Name: github.com/turt2live/matrix-media-repo
Vulnerable Version: >=0 <1.3.0

Severity

Level: Medium

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

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

EPSS: 0.00499 pctl0.64893

Details

matrix-media-repo: Unsafe media served inline on download endpoints ### Impact A malicious user can upload an SVG image containing JavaScript to their server. When matrix-media-repo is asked to serve that media via the `/_matrix/media/(r0|v3)/download` endpoint, it would be served with a `Content-Disposition` of `inline`. This can allow JavaScript to run in the browser if a client links to the `/download` endpoint directly. Server operators which do not share a domain between matrix-media-repo and other services are not affected, but are encouraged to upgrade regardless. ### Patches https://github.com/turt2live/matrix-media-repo/commit/77ec2354e8f46d5ef149d1dcaf25f51c04149137 and https://github.com/turt2live/matrix-media-repo/commit/bf8abdd7a5371118e280c65a8e0ec2b2e9bdaf59 fix the issue. Operators should upgrade to v1.3.0 as soon as possible. ### Workarounds The `Content-Disposition` header can be overridden by the reverse proxy in front of matrix-media-repo to always use `attachment`, defeating this issue at the cost of "worse" user experience when clicking download links. ### References https://developer.mozilla.org/en-US/docs/Web/SVG/Element/script

Metadata

Created: 2023-09-08T13:18:23Z
Modified: 2023-09-08T13:18:23Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/09/GHSA-5crw-6j7v-xc72/GHSA-5crw-6j7v-xc72.json
CWE IDs: ["CWE-79"]
Alternative ID: GHSA-5crw-6j7v-xc72
Finding: F425
Auto approve: 1