Multiple vulnerabilities in Jellyfin

Published: 2023-04-26

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-30626 CVE-2023-30627
CWE-ID	CWE-22 CWE-79
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Jellyfin Client/Desktop applications / Other client software Jellyfin Web Web applications / Modules and components for CMS
Vendor	Jellyfin

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Path traversal

EUVDB-ID: #VU75524

Risk: Medium

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-30626

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote user can send a specially crafted HTTP request and read arbitrary files on the system, leading to arbitrary code execution.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Jellyfin: 10.0.0 - 10.8.9

CPE2.3

External links

https://github.com/jellyfin/jellyfin/security/advisories/GHSA-9p5f-5x8v-x65m
https://github.com/jellyfin/jellyfin/pull/5918
https://github.com/jellyfin/jellyfin/commit/82ad2633fdfb1c37a158057c7935f83e1129eda7
https://github.com/jellyfin/jellyfin/blob/22d880662283980dec994cd7d35fe269613bfce3/Jellyfin.Api/Controllers/ClientLogController.cs#L44
https://github.com/jellyfin/jellyfin/releases/tag/v10.8.10
https://github.com/jellyfin/jellyfin-web/security/advisories/GHSA-89hp-h43h-r5pq

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Stored cross-site scripting

EUVDB-ID: #VU75525

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-30627

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in the devices.js script. A remote user can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.