Vulnerabilities in pkg:nuget/umbraco

PACKAGE
Advisory Identifier: GHSA-wrrj-r2j4-969w
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Advisory Summary

CVE-2018-17256 is a MODERATE (CVSS 4.8) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Umbraco libraries in the NuGet ecosystem. The issue involves umbraco cms vulnerable to stored xss. Remediation is available in the latest vendor maintenance releases.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:nuget/umbraco

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:nuget/umbraco. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-wrrj-r2j4-969w CVE-2018-17256 MODERATE Umbraco CMS vulnerable to stored XSS

CVE-2018-17256 at a Glance

CVE Identifier CVE-2018-17256
GHSA Identifier GHSA-wrrj-r2j4-969w
Severity MODERATE
CVSS v3.1 Base Score 4.8
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Umbraco
Package Ecosystem NuGet
Published Date
Last Updated

Security Impact

CVSS: 4.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required High (PR:H)
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-2018-17256

To remediate this vulnerability, upgrade all affected Umbraco 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 fixed: Latest secure release 
Upgrade umbraco to Latest secure release
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

How to Check if You Are Affected

To determine whether your application is affected by CVE-2018-17256, inspect your project dependencies for Umbraco:

inspect dependencies for umbraco

Analyze the terminal output to locate any version of Umbraco in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), 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 Umbraco, 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

Persistent cross-site scripting (XSS) vulnerability in Umbraco CMS 7.12.3 allows authenticated users to inject arbitrary web script via the Header Name of a content (Blog, Content Page, etc.). The vulnerability is exploited when updating or removing public access of a content.

CVE-2018-17256 Affected Umbraco Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
umbraco
nuget/umbraco
NuGet
≤ 7.12.3

References

NVD — CVE-2018-17256 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-17256
Umbraco Source Repository REPOSITORY
https://github.com/umbraco/Umbraco-CMS

Frequently Asked Questions

What is CVE-2018-17256?
CVE-2018-17256 is a security vulnerability in Umbraco involving Umbraco CMS vulnerable to stored XSS under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Umbraco versions are affected?
Affected versions include releases prior to current release patches across affected packages: umbraco.
What version fixes CVE-2018-17256?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is umbraco affected?
Yes, umbraco is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2018-17256?
CVE-2018-17256 has a CVSS v3.1 base score of 4.8 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2018-17256?
CVE-2018-17256 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-2018-17256?
Run the dependency tree command: 'inspect dependencies for umbraco'. 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-wrrj-r2j4-969w",
  "modified" : "2023-07-24T20:54:51Z",
  "published" : "2022-05-14T01:44:31Z",
  "aliases" : [ "CVE-2018-17256" ],
  "summary" : "Umbraco CMS vulnerable to stored XSS",
  "details" : "Persistent cross-site scripting (XSS) vulnerability in Umbraco CMS 7.12.3 allows authenticated users to inject arbitrary web script via the Header Name of a content (Blog, Content Page, etc.). The vulnerability is exploited when updating or removing public access of a content.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "umbraco"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "7.12.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-17256"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/umbraco/Umbraco-CMS"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-24T20:54:51Z",
    "nvd_published_at" : "2018-11-27T19:29:00Z"
  }
}