CVE-2024-34071: Umbraco.Cms.Web.BackOffice Umbraco CMS Open Redirect Bypass Vulnerability

MODERATE
Advisory Identifier: GHSA-j74q-mv2c-rxmp
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CVSS 6.1
CWE-601
Published
Advisory Summary

CVE-2024-34071 is a MODERATE (CVSS 6.1) umbraco cms open redirect bypass vulnerability (CWE-601: URL Redirection to Untrusted Site ('Open Redirect')) affecting Umbraco.Cms.Web.BackOffice libraries in the NuGet ecosystem. The issue involves umbraco cms open redirect bypass protection. Remediation is available by upgrading affected packages to version 12.3.10, 13.3.1, 8.18.14, 10.8.6.

CVE-2024-34071 at a Glance

CVE Identifier CVE-2024-34071
GHSA Identifier GHSA-j74q-mv2c-rxmp
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-601: URL Redirection to Untrusted Site ('Open Redirect')
Affected Product Umbraco.Cms.Web.BackOffice
Package Ecosystem NuGet
Published Date
Last Updated

Security Impact

CVSS: 6.1

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

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

How to Fix CVE-2024-34071

To remediate this vulnerability, upgrade all affected Umbraco.Cms.Web.BackOffice 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.Web.BackOffice fixed: 12.3.10 
Upgrade Umbraco.Cms.Web.BackOffice to 12.3.10
Umbraco.Cms.Web.BackOffice fixed: 13.3.1 
Upgrade Umbraco.Cms.Web.BackOffice to 13.3.1
UmbracoCms.Core fixed: 8.18.14 
Upgrade UmbracoCms.Core to 8.18.14
UmbracoCms.Core fixed: 10.8.6 
Upgrade UmbracoCms.Core to 10.8.6
UmbracoCms.Core fixed: 12.3.10 
Upgrade UmbracoCms.Core to 12.3.10
UmbracoCms.Core fixed: 13.3.1 
Upgrade UmbracoCms.Core to 13.3.1
Umbraco.Cms.Web.BackOffice fixed: 8.18.14 
Upgrade Umbraco.Cms.Web.BackOffice to 8.18.14
Umbraco.Cms.Web.BackOffice fixed: 10.8.6 
Upgrade Umbraco.Cms.Web.BackOffice to 10.8.6
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.Web.BackOffice

How to Check if You Are Affected

To determine whether your application is affected by CVE-2024-34071, inspect your project dependencies for Umbraco.Cms.Web.BackOffice:

inspect dependencies for Umbraco.Cms.Web.BackOffice

Analyze the terminal output to locate any version of Umbraco.Cms.Web.BackOffice in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 12.3.10), 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-601: URL Redirection to Untrusted Site ('Open Redirect'), where the web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect. In Umbraco.Cms.Web.BackOffice, 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 Umbraco have an endpoint that is vulnerable to open redirects. The endpoint is protected so it requires the user to be signed into backoffice, before the vulnerability is exposed. ### Affected Version \>= 8.18.5, >= 10.5.0, >= 12.0.0, >= 13.0.0 ### Patches 8.18.14, 10.8.6, 12.3.10, 13.3.1

CVE-2024-34071 Affected Umbraco.Cms.Web.BackOffice Versions

8 component(s)
Fixed Versions:
12.3.1013.3.18.18.1410.8.6
Product / Package Ecosystem Affected Versions Fixed Version
Umbraco.Cms.Web.BackOffice
nuget/Umbraco.Cms.Web.BackOffice
NuGet
≥ 12.0.0
< 12.3.10
12.3.10
Umbraco.Cms.Web.BackOffice
nuget/Umbraco.Cms.Web.BackOffice
NuGet
≥ 13.0.0
< 13.3.1
13.3.1
UmbracoCms.Core
nuget/UmbracoCms.Core
NuGet
≥ 8.18.5
< 8.18.14
8.18.14
UmbracoCms.Core
nuget/UmbracoCms.Core
NuGet
≥ 10.5.0
< 10.8.6
10.8.6
UmbracoCms.Core
nuget/UmbracoCms.Core
NuGet
≥ 12.0.0
< 12.3.10
12.3.10
UmbracoCms.Core
nuget/UmbracoCms.Core
NuGet
≥ 13.0.0
< 13.3.1
13.3.1
Umbraco.Cms.Web.BackOffice
nuget/Umbraco.Cms.Web.BackOffice
NuGet
≥ 8.18.5
< 8.18.14
8.18.14
Umbraco.Cms.Web.BackOffice
nuget/Umbraco.Cms.Web.BackOffice
NuGet
≥ 10.5.0
< 10.8.6
10.8.6

References

GitHub Advisory / Wiki ADVISORY
https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-j74q-mv2c-rxmp
NVD — CVE-2024-34071 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-34071
Security Fix Commit FIX COMMIT
https://github.com/umbraco/Umbraco-CMS/commit/5f24de308584b9771240a6db1a34630a5114c450
Security Fix Commit FIX COMMIT
https://github.com/umbraco/Umbraco-CMS/commit/c17d4e1a600098ec524e4126f4395255476bc33f
Security Fix Commit FIX COMMIT
https://github.com/umbraco/Umbraco-CMS/commit/c8f71af646171074c13e5c34f74312def4512031
Security Fix Commit FIX COMMIT
https://github.com/umbraco/Umbraco-CMS/commit/d8df405db4ea884bb4b96f088d10d9a2070cf024
Umbraco.Cms.Web.BackOffice Source Repository REPOSITORY
https://github.com/umbraco/Umbraco-CMS

Frequently Asked Questions

What is CVE-2024-34071?
CVE-2024-34071 is a security vulnerability in Umbraco.Cms.Web.BackOffice involving Umbraco CMS Open Redirect Bypass Protection under CWE-601: URL Redirection to Untrusted Site ('Open Redirect').
Which Umbraco.Cms.Web.BackOffice versions are affected?
Affected versions include releases prior to 12.3.10, 13.3.1, 8.18.14, 10.8.6 across affected packages: Umbraco.Cms.Web.BackOffice, UmbracoCms.Core.
What version fixes CVE-2024-34071?
Upgrading to 12.3.10, 13.3.1, 8.18.14, 10.8.6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is Umbraco.Cms.Web.BackOffice affected?
Yes, Umbraco.Cms.Web.BackOffice is affected in releases prior to 12.3.10, 13.3.1, 8.18.14, 10.8.6. Upgrade your dependency to 12.3.10, 13.3.1, 8.18.14, 10.8.6 or later.
Is UmbracoCms.Core affected?
Yes, UmbracoCms.Core is affected in releases prior to 8.18.14, 10.8.6, 12.3.10, 13.3.1. Upgrade your dependency to 8.18.14, 10.8.6, 12.3.10, 13.3.1 or later.
What is the CVSS score of CVE-2024-34071?
CVE-2024-34071 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2024-34071?
CVE-2024-34071 is classified under CWE-601: URL Redirection to Untrusted Site ('Open Redirect') (The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.).
How can I check NuGet dependencies for CVE-2024-34071?
Run the dependency tree command: 'inspect dependencies for Umbraco.Cms.Web.BackOffice'. 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-j74q-mv2c-rxmp",
  "modified" : "2025-02-12T18:33:35Z",
  "published" : "2024-05-21T14:29:18Z",
  "aliases" : [ "CVE-2024-34071" ],
  "summary" : "Umbraco CMS Open Redirect Bypass Protection  ",
  "details" : "### Impact\nUmbraco have an endpoint that is vulnerable to open redirects. The endpoint is protected so it requires the user to be signed into backoffice, before the vulnerability is exposed.\n\n### Affected Version\n\n\\>= 8.18.5, >= 10.5.0, >= 12.0.0, >= 13.0.0\n\n### Patches\n8.18.14, 10.8.6, 12.3.10, 13.3.1",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "UmbracoCms.Core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "8.18.5"
      }, {
        "fixed" : "8.18.14"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "UmbracoCms.Core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "10.5.0"
      }, {
        "fixed" : "10.8.6"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "UmbracoCms.Core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "12.0.0"
      }, {
        "fixed" : "12.3.10"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "UmbracoCms.Core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "13.0.0"
      }, {
        "fixed" : "13.3.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Umbraco.Cms.Web.BackOffice"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "8.18.5"
      }, {
        "fixed" : "8.18.14"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Umbraco.Cms.Web.BackOffice"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "10.5.0"
      }, {
        "fixed" : "10.8.6"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Umbraco.Cms.Web.BackOffice"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "12.0.0"
      }, {
        "fixed" : "12.3.10"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Umbraco.Cms.Web.BackOffice"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "13.0.0"
      }, {
        "fixed" : "13.3.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-j74q-mv2c-rxmp"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-34071"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/umbraco/Umbraco-CMS/commit/5f24de308584b9771240a6db1a34630a5114c450"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/umbraco/Umbraco-CMS/commit/c17d4e1a600098ec524e4126f4395255476bc33f"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/umbraco/Umbraco-CMS/commit/c8f71af646171074c13e5c34f74312def4512031"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/umbraco/Umbraco-CMS/commit/d8df405db4ea884bb4b96f088d10d9a2070cf024"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/umbraco/Umbraco-CMS"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-601" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-05-21T14:29:18Z",
    "nvd_published_at" : "2024-05-21T14:15:11Z"
  }
}