CVE-2021-32833 Unauthenticated file read in Emby Server
Unauthenticated attackers can read arbitrary files on Windows systems running Emby Server via specific API routes, leading to unauthorized data access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-32833?
CVE-2021-32833 is a high-severity path traversal vulnerability in MediaBrowser Emby.Releases, published on 9 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Emby Server is a personal media server with apps on many devices. In Emby Server on Windows there is a set of arbitrary file read vulnerabilities. This vulnerability is known to exist in version 4.6.4.0 and may not be patched in later versions. Known vulnerable routes are /Videos/Id/hls/PlaylistId/SegmentId.SegmentContainer, /Images/Ratings/theme/name and /Images/MediaInfo/theme/name. For more details including proof of concept code, refer to the referenced GHSL-2021-051. This issue may lead to unauthorized access to the system especially when Emby Server is configured to be accessible from the Internet.
Weakness: CWE-552
Which versions are affected by CVE-2021-32833?
It affects 1 product.
Products include Emby Emby.releases.
How do I fix CVE-2021-32833?
No fix has been published for CVE-2021-32833 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2021-32833 being exploited?
There is no known exploitation of CVE-2021-32833 in the wild and no public exploit code.
Other vulnerabilities in MediaBrowser Emby.Releases
Sources
Also known as GHSA-2mfq-w3fm-wxm3.