CVE-2021-29490

Unauthenticated GET requests through Remote Image endpoints

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.

Category

5.8
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 91.05% Top 5%
Third-Party Advisory github.com
Affected: jellyfin jellyfin
Published at:
Updated at:

References

Link Tags
https://github.com/jellyfin/jellyfin/security/advisories/GHSA-rgjw-4fwc-9v96 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-29490?
CVE-2021-29490 has been scored as a medium severity vulnerability.
How to fix CVE-2021-29490?
To fix CVE-2021-29490, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-29490 being actively exploited in the wild?
It is possible that CVE-2021-29490 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~91% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-29490?
CVE-2021-29490 affects jellyfin jellyfin.
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