CVE-2017-15280: UmbracoCms.Web Umbraco CMS XXE Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-h2vq-7gf2-qw9v
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CVSS 5.5
CWE-611
Published
Advisory Summary

CVE-2017-15280 is a MODERATE (CVSS 5.5) umbraco cms xxe vulnerability vulnerability (CWE-611: Improper Restriction of XML External Entity Reference) affecting UmbracoCms.Web libraries in the NuGet ecosystem. The issue involves umbraco cms xxe vulnerability. Remediation is available by upgrading affected packages to version 7.7.3.

CVE-2017-15280 at a Glance

CVE Identifier CVE-2017-15280
GHSA Identifier GHSA-h2vq-7gf2-qw9v
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification CWE-611: Improper Restriction of XML External Entity Reference
Affected Product UmbracoCms.Web
Package Ecosystem NuGet
Published Date
Last Updated

Security Impact

CVSS: 5.5

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

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

How to Fix CVE-2017-15280

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

UmbracoCms.Web fixed: 7.7.3 
Upgrade UmbracoCms.Web to 7.7.3
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 UmbracoCms.Web

How to Check if You Are Affected

To determine whether your application is affected by CVE-2017-15280, inspect your project dependencies for UmbracoCms.Web:

inspect dependencies for UmbracoCms.Web

Analyze the terminal output to locate any version of UmbracoCms.Web in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 7.7.3), 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-611: Improper Restriction of XML External Entity Reference, where the product processes an xml document that can contain xml entities with uris that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. In UmbracoCms.Web, 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

XML external entity (XXE) vulnerability in Umbraco CMS before 7.7.3 allows attackers to obtain sensitive information by reading files on the server or sending TCP requests to intranet hosts (aka SSRF), related to `Umbraco.Web/umbraco.presentation/umbraco/dialogs/importDocumenttype.aspx.cs`.

CVE-2017-15280 Affected UmbracoCms.Web Versions

1 component(s)
Fixed Versions:
7.7.3
Product / Package Ecosystem Affected Versions Fixed Version
UmbracoCms.Web
nuget/UmbracoCms.Web
NuGet
< 7.7.3
7.7.3

References

NVD — CVE-2017-15280 NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-15280
Security Fix Commit FIX COMMIT
https://github.com/umbraco/Umbraco-CMS/commit/5dde2efe0d2b3a47d17439e03acabb7ea2befb64
UmbracoCms.Web Source Repository REPOSITORY
https://github.com/umbraco/Umbraco-CMS
UmbracoCms.Web Source Repository REPOSITORY
https://github.com/umbraco/Umbraco-CMS/blob/release-7.7.3/src/Umbraco.Web/Umbraco.Web.csproj
issues.umbraco.org/issue/u4-10506 WEB
http://issues.umbraco.org/issue/U4-10506

Frequently Asked Questions

What is CVE-2017-15280?
CVE-2017-15280 is a security vulnerability in UmbracoCms.Web involving Umbraco CMS XXE Vulnerability under CWE-611: Improper Restriction of XML External Entity Reference.
Which UmbracoCms.Web versions are affected?
Affected versions include releases prior to 7.7.3 across affected packages: UmbracoCms.Web.
What version fixes CVE-2017-15280?
Upgrading to 7.7.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is UmbracoCms.Web affected?
Yes, UmbracoCms.Web is affected in releases prior to 7.7.3. Upgrade your dependency to 7.7.3 or later.
What is the CVSS score of CVE-2017-15280?
CVE-2017-15280 has a CVSS v3.1 base score of 5.5 (MODERATE) with vector string CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2017-15280?
CVE-2017-15280 is classified under CWE-611: Improper Restriction of XML External Entity Reference (The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.).
How can I check NuGet dependencies for CVE-2017-15280?
Run the dependency tree command: 'inspect dependencies for UmbracoCms.Web'. 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-h2vq-7gf2-qw9v",
  "modified" : "2023-10-23T17:24:47Z",
  "published" : "2022-05-17T00:30:20Z",
  "aliases" : [ "CVE-2017-15280" ],
  "summary" : "Umbraco CMS XXE Vulnerability",
  "details" : "XML external entity (XXE) vulnerability in Umbraco CMS before 7.7.3 allows attackers to obtain sensitive information by reading files on the server or sending TCP requests to intranet hosts (aka SSRF), related to `Umbraco.Web/umbraco.presentation/umbraco/dialogs/importDocumenttype.aspx.cs`.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "UmbracoCms.Web"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "7.7.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2017-15280"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/umbraco/Umbraco-CMS/commit/5dde2efe0d2b3a47d17439e03acabb7ea2befb64"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/umbraco/Umbraco-CMS"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/umbraco/Umbraco-CMS/blob/release-7.7.3/src/Umbraco.Web/Umbraco.Web.csproj"
  }, {
    "type" : "WEB",
    "url" : "http://issues.umbraco.org/issue/U4-10506"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-611" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-26T23:13:52Z",
    "nvd_published_at" : "2017-10-12T08:29:00Z"
  }
}