Jellyfin is an open source self hosted media server. The Jellyfin user profile image upload accepts SVG files, allowing for a stored XSS attack against an admin user via a specially crafted malicious SVG file. When viewed by an admin outside of the Jellyfin Web UI (e.g. via "view image" in a browser), this malicious SVG file could interact with the browser's LocalStorage and retrieve an AccessToken, which in turn can be used in an API call to elevate the target user to a Jellyfin administrator. The actual attack vector is unlikely to be exploited, as it requires specific actions by the administrator to view the SVG image outside of Jellyfin's WebUI, i.e. it is not a passive attack. The underlying exploit mechanism is solved by PR #12490, which forces attached images (including the potential malicious SVG) to be treated as attachments and thus downloaded by browsers, rather than viewed. This prevents exploitation of the LocalStorage of the browser. This PR has been merged and the relevant code changes are included in release version 10.9.10. All users are advised to upgrade.
Metrics
Affected Vendors & Products
References
History
Tue, 01 Oct 2024 15:45:00 +0000
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Jellyfin
Jellyfin jellyfin |
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Weaknesses | NVD-CWE-noinfo | |
CPEs | cpe:2.3:a:jellyfin:jellyfin:*:*:*:*:*:*:*:* | |
Vendors & Products |
Jellyfin
Jellyfin jellyfin |
Tue, 03 Sep 2024 20:30:00 +0000
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References |
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ssvc
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Tue, 03 Sep 2024 15:30:00 +0000
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ssvc
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Mon, 02 Sep 2024 16:45:00 +0000
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Description | Jellyfin is an open source self hosted media server. The Jellyfin user profile image upload accepts SVG files, allowing for a stored XSS attack against an admin user via a specially crafted malicious SVG file. When viewed by an admin outside of the Jellyfin Web UI (e.g. via "view image" in a browser), this malicious SVG file could interact with the browser's LocalStorage and retrieve an AccessToken, which in turn can be used in an API call to elevate the target user to a Jellyfin administrator. The actual attack vector is unlikely to be exploited, as it requires specific actions by the administrator to view the SVG image outside of Jellyfin's WebUI, i.e. it is not a passive attack. The underlying exploit mechanism is solved by PR #12490, which forces attached images (including the potential malicious SVG) to be treated as attachments and thus downloaded by browsers, rather than viewed. This prevents exploitation of the LocalStorage of the browser. This PR has been merged and the relevant code changes are included in release version 10.9.10. All users are advised to upgrade. | |
Title | Privilege escalation to admin from a low-privileged user via SVG upload in Jellyfin | |
Weaknesses | CWE-200 | |
References |
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Metrics |
cvssV3_1
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published: 2024-09-02T16:26:58.884Z
Updated: 2024-09-03T19:16:00.791Z
Reserved: 2024-08-16T14:20:37.326Z
Link: CVE-2024-43801
Vulnrichment
Updated: 2024-09-03T19:16:00.791Z
NVD
Status : Analyzed
Published: 2024-09-02T18:15:36.320
Modified: 2024-10-01T15:25:52.560
Link: CVE-2024-43801
Redhat
No data.