CVE-2021-29490 Information

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

Reference

https://github.com/jellyfin/jellyfin/security/advisories/GHSA-rgjw-4fwc-9v96

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

NONE

Base Severity

5.8