Vulnerability CVE-2021-21402


Published: 2021-03-23

Description:
Jellyfin is a Free Software Media System. In Jellyfin before version 10.7.1, with certain endpoints, well crafted requests will allow arbitrary file read from a Jellyfin server's file system. This issue is more prevalent when Windows is used as the host OS. Servers that are exposed to the public Internet are potentially at risk. This is fixed in version 10.7.1. As a workaround, users may be able to restrict some access by enforcing strict security permissions on their filesystem, however, it is recommended to update as soon as possible.

Type:

CWE-22

(Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'))

CVSS2 => (AV:N/AC:L/Au:S/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4/10
2.9/10
8/10
Exploit range
Attack complexity
Authentication
Remote
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Jellyfin -> Jellyfin 

 References:
https://github.com/jellyfin/jellyfin/commit/0183ef8e89195f420c48d2600bc0b72f6d3a7fd7
https://github.com/jellyfin/jellyfin/releases/tag/v10.7.1
https://github.com/jellyfin/jellyfin/security/advisories/GHSA-wg4c-c9g9-rxhx

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