CVE-2023-48227: Umbraco.CMS Backoffice User Can Bypass "Publish" Vulnerability

LOW
Advisory Identifier: GHSA-335x-5wcm-8jv2
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CVSS 0.0
CWE-863
Published
Advisory Summary

CVE-2023-48227 is a LOW (CVSS 0.0) backoffice user can bypass "publish" vulnerability (CWE-863: Incorrect Authorization) affecting Umbraco.CMS libraries in the NuGet ecosystem. The issue involves backoffice user can bypass "publish" restriction. Remediation is available by upgrading affected packages to version 8.18.10, 10.8.0, 12.3.0.

CVE-2023-48227 at a Glance

CVE Identifier CVE-2023-48227
GHSA Identifier GHSA-335x-5wcm-8jv2
Severity LOW
CVSS v3.1 Base Score 0.0
CWE Classification CWE-863: Incorrect Authorization
Affected Product Umbraco.CMS
Package Ecosystem NuGet
Published Date
Last Updated

Security Impact

CVSS: 0.0

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:N/I:N/A:N).

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 None (C:N)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2023-48227

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

Umbraco.CMS fixed: 8.18.10 
Upgrade Umbraco.CMS to 8.18.10
Umbraco.CMS fixed: 10.8.0 
Upgrade Umbraco.CMS to 10.8.0
Umbraco.CMS fixed: 12.3.0 
Upgrade Umbraco.CMS to 12.3.0
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 Umbraco.CMS

How to Check if You Are Affected

To determine whether your application is affected by CVE-2023-48227, inspect your project dependencies for Umbraco.CMS:

inspect dependencies for Umbraco.CMS

Analyze the terminal output to locate any version of Umbraco.CMS in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 8.18.10), 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-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. In Umbraco.CMS, 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

#### Impact Backoffice users with send for approval permission but not publish permission are able to publish in some scenarios. #### Explanation of the vulnerability Backoffice users without permission to publish content, but only to send for approval, can bypass the restriction by modifying the request body of the "Send for Approval" request.

CVE-2023-48227 Affected Umbraco.CMS Versions

3 component(s)
Fixed Versions:
8.18.1010.8.012.3.0
Product / Package Ecosystem Affected Versions Fixed Version
Umbraco.CMS
nuget/Umbraco.CMS
NuGet
≥ 8.0.0
< 8.18.10
8.18.10
Umbraco.CMS
nuget/Umbraco.CMS
NuGet
≥ 9.0.0
< 10.8.0
10.8.0
Umbraco.CMS
nuget/Umbraco.CMS
NuGet
≥ 11.0.0
< 12.3.0
12.3.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-335x-5wcm-8jv2
NVD — CVE-2023-48227 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-48227
Umbraco.CMS Source Repository REPOSITORY
https://github.com/umbraco/Umbraco-CMS

Frequently Asked Questions

What is CVE-2023-48227?
CVE-2023-48227 is a security vulnerability in Umbraco.CMS involving Backoffice User can bypass "Publish" restriction under CWE-863: Incorrect Authorization.
Which Umbraco.CMS versions are affected?
Affected versions include releases prior to 8.18.10, 10.8.0, 12.3.0 across affected packages: Umbraco.CMS.
What version fixes CVE-2023-48227?
Upgrading to 8.18.10, 10.8.0, 12.3.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is Umbraco.CMS affected?
Yes, Umbraco.CMS is affected in releases prior to 8.18.10, 10.8.0, 12.3.0. Upgrade your dependency to 8.18.10, 10.8.0, 12.3.0 or later.
What is the CVSS score of CVE-2023-48227?
CVE-2023-48227 has a CVSS v3.1 base score of 0.0 (LOW) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:N.
What CWE is associated with CVE-2023-48227?
CVE-2023-48227 is classified under CWE-863: Incorrect Authorization (The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.).
How can I check NuGet dependencies for CVE-2023-48227?
Run the dependency tree command: 'inspect dependencies for Umbraco.CMS'. 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-335x-5wcm-8jv2",
  "modified" : "2024-01-12T16:28:24Z",
  "published" : "2023-12-13T13:21:51Z",
  "aliases" : [ "CVE-2023-48227" ],
  "summary" : "Backoffice User can bypass \"Publish\" restriction",
  "details" : "#### Impact\nBackoffice users with send for approval permission but not publish permission are able to publish in some scenarios.\n\n#### Explanation of the vulnerability \nBackoffice users without permission to publish content, but only to send for approval, can bypass the restriction by modifying the request body of the \"Send for Approval\" request.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Umbraco.CMS"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "8.0.0"
      }, {
        "fixed" : "8.18.10"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Umbraco.CMS"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "9.0.0"
      }, {
        "fixed" : "10.8.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Umbraco.CMS"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "11.0.0"
      }, {
        "fixed" : "12.3.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-335x-5wcm-8jv2"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-48227"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/umbraco/Umbraco-CMS"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-12-13T13:21:51Z",
    "nvd_published_at" : "2023-12-12T17:15:08Z"
  }
}