Vulnerability · Published May 5, 2021 · Assigned by GitHub_M
CVE-2021-29490Unauthenticated GET requests through Remote Image endpoints
Medium 5.8
In plain English
A medium-severity server-side request forgery in jellyfin from jellyfin. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 69.9% (higher than 99.4% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei.
Official description
Jellyfin is a free software media system that provides media from a dedicated server to end-user devices via multiple apps. Verions prior to 10.7.3 vulnerable to unauthenticated Server-Side Request Forgery (SSRF) attacks via the imageUrl parameter. This issue potentially exposes both internal and external HTTP servers or other resources available via HTTP `GET` that are visible from the Jellyfin server. The vulnerability is patched in version 10.7.3. As a workaround, disable external access to the API endpoints `/Items/*/RemoteImages/Download`, `/Items/RemoteSearch/Image` and `/Images/Remote` via reverse proxy, or limit to known-friendly IPs.
Affected products (as reported)
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
References
- https://github.com/jellyfin/jellyfin/security/advisories/GHSA-rgjw-4fwc-9v96 x_refsource_CONFIRM