CVE-2022-35909: Jellyfin.Common Incorrect Access Control And Cross Vulnerability

HIGH
Advisory Identifier: GHSA-qwp3-5fw3-5wgv
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CVSS 8.8
CWE-79
Published
Advisory Summary

CVE-2022-35909 is a HIGH (CVSS 8.8) incorrect access control and cross vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Jellyfin.Common libraries in the NuGet ecosystem. The issue involves incorrect access control and cross site scripting in jellyfin. Remediation is available by upgrading affected packages to version 10.8.0.

CVE-2022-35909 at a Glance

CVE Identifier CVE-2022-35909
GHSA Identifier GHSA-qwp3-5fw3-5wgv
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Jellyfin.Common
Package Ecosystem NuGet
Published Date
Last Updated

Security Impact

CVSS: 8.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2022-35909

To remediate this vulnerability, upgrade all affected Jellyfin.Common dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Jellyfin.Common fixed: 10.8.0 
Upgrade Jellyfin.Common to 10.8.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for Jellyfin.Common

How to Check if You Are Affected

To determine whether your application is affected by CVE-2022-35909, inspect your project dependencies for Jellyfin.Common:

inspect dependencies for Jellyfin.Common

Analyze the terminal output to locate any version of Jellyfin.Common in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 10.8.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Jellyfin.Common, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

In Jellyfin before 10.8, the /users endpoint has incorrect access control for admin functionality. This lack of access control can be leveraged to performe a cross site scripting attack.

CVE-2022-35909 Affected Jellyfin.Common Versions

1 component(s)
Fixed Versions:
10.8.0
Product / Package Ecosystem Affected Versions Fixed Version
Jellyfin.Common
nuget/Jellyfin.Common
NuGet
< 10.8.0
10.8.0

References

NVD — CVE-2022-35909 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-35909
Jellyfin.Common Source Repository REPOSITORY
https://github.com/jellyfin/jellyfin/pull/7569/files
docs.google.com/document/d/1cbxqrok... WEB
https://docs.google.com/document/d/1cBXQrokCvWxKET4BKi3ZLtVp5gst6-MrGPgMKpfXw8Y/edit
Jellyfin.Common Source Repository REPOSITORY
https://github.com/jellyfin/jellyfin
medium.com/stolabs/cve-2022-35... WEB
https://medium.com/stolabs/cve-2022-35909-cve-2022-35910-incorrect-access-control-and-xss-stored-to-jellyfin-967359c91058

Frequently Asked Questions

What is CVE-2022-35909?
CVE-2022-35909 is a security vulnerability in Jellyfin.Common involving Incorrect Access Control and Cross Site Scripting in Jellyfin under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Jellyfin.Common versions are affected?
Affected versions include releases prior to 10.8.0 across affected packages: Jellyfin.Common.
What version fixes CVE-2022-35909?
Upgrading to 10.8.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is Jellyfin.Common affected?
Yes, Jellyfin.Common is affected in releases prior to 10.8.0. Upgrade your dependency to 10.8.0 or later.
What is the CVSS score of CVE-2022-35909?
CVE-2022-35909 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2022-35909?
CVE-2022-35909 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check NuGet dependencies for CVE-2022-35909?
Run the dependency tree command: 'inspect dependencies for Jellyfin.Common'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-qwp3-5fw3-5wgv",
  "modified" : "2022-08-30T20:19:35Z",
  "published" : "2022-08-20T00:00:39Z",
  "aliases" : [ "CVE-2022-35909" ],
  "summary" : "Incorrect Access Control and Cross Site Scripting in Jellyfin",
  "details" : "In Jellyfin before 10.8, the /users endpoint has incorrect access control for admin functionality. This lack of access control can be leveraged to performe a cross site scripting attack.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Jellyfin.Common"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "10.8.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-35909"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jellyfin/jellyfin/pull/7569/files"
  }, {
    "type" : "WEB",
    "url" : "https://docs.google.com/document/d/1cBXQrokCvWxKET4BKi3ZLtVp5gst6-MrGPgMKpfXw8Y/edit"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jellyfin/jellyfin"
  }, {
    "type" : "WEB",
    "url" : "https://medium.com/stolabs/cve-2022-35909-cve-2022-35910-incorrect-access-control-and-xss-stored-to-jellyfin-967359c91058"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-08-30T20:19:35Z",
    "nvd_published_at" : "2022-08-19T13:15:00Z"
  }
}