CVE-2021-29490— Unauthenticated GET requests through Remote Image endpoints
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I. Basic Information for CVE-2021-29490
Vulnerability Information
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Vulnerability Title
Unauthenticated GET requests through Remote Image endpoints
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
服务端请求伪造(SSRF)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Jellyfin 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Jellyfin是一个免费软件媒体系统。可让您控制媒体的管理和流式传输。它是专有Emby和Plex的替代产品，可以通过多个应用程序将专用服务器中的媒体提供给最终用户设备。 Jellyfin 10.7.3之前的版本存在代码问题漏洞，该漏洞可能会暴露内部和外部的HTTP服务器，或者其他通过HTTP GET 从Jellyfin服务器看到的资源。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
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Affected Products
II. Public POCs for CVE-2021-29490
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | Jellyfin is a free software media system. Versions 10.7.2 and below are vulnerable to unauthenticated Server-Side Request Forgery (SSRF) attacks via the imageUrl parameter. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-29490.yaml | POC Details |
| 2 | None | https://github.com/Threekiii/Awesome-POC/blob/master/Web%E5%BA%94%E7%94%A8%E6%BC%8F%E6%B4%9E/Jellyfin%20RemoteImageController.cs%20SSRF%E6%BC%8F%E6%B4%9E%20CVE-2021-29490.md | POC Details |
AI-Generated POCPremium
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- https://github.com/jellyfin/jellyfin/security/advisories/GHSA-rgjw-4fwc-9v96x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2021-29490
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V. Comments for CVE-2021-29490
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