CVE-2015-8813: Umbraco.CMS Umbraco CMS Vulnerable To CSRF Vulnerability

HIGH
Advisory Identifier: GHSA-x34j-wxq8-7vcm
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CVSS 8.2
CWE-918
Published
Advisory Summary

CVE-2015-8813 is a HIGH (CVSS 8.2) umbraco cms vulnerable to csrf vulnerability (CWE-918: Server-Side Request Forgery (SSRF)) affecting Umbraco.CMS libraries in the NuGet ecosystem. The issue involves umbraco cms vulnerable to csrf. Remediation is available by upgrading affected packages to version 7.4.0.

CVE-2015-8813 at a Glance

CVE Identifier CVE-2015-8813
GHSA Identifier GHSA-x34j-wxq8-7vcm
Severity HIGH
CVSS v3.1 Base Score 8.2
CWE Classification CWE-918: Server-Side Request Forgery (SSRF)
Affected Product Umbraco.CMS
Package Ecosystem NuGet
Published Date
Last Updated

Security Impact

CVSS: 8.2

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/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 High (I:H)
Availability None (A:N)

How to Fix CVE-2015-8813

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: 7.4.0 
Upgrade Umbraco.CMS to 7.4.0
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-2015-8813, 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 7.4.0), 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-918: Server-Side Request Forgery (SSRF), where the web server receives a url or similar request from an upstream component and retrieves the contents of this url, but it does not sufficiently ensure that the request is being sent to the expected destination. 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

The `Page_Load` function in [Umbraco.Web/umbraco.presentation/umbraco/dashboard/FeedProxy.aspx.cs](https://github.com/umbraco/Umbraco-CMS/commit/924a016ffe7ae7ea6d516c07a7852f0095eddbce#diff-2899f01df84571577834f97a81637c65e20178ec6129b76c02f99789b23cf72e) in Umbraco before 7.4.0 allows remote attackers to conduct server-side request forgery (SSRF) attacks via the url parameter.

CVE-2015-8813 Affected Umbraco.CMS Versions

1 component(s)
Fixed Versions:
7.4.0
Product / Package Ecosystem Affected Versions Fixed Version
Umbraco.CMS
nuget/Umbraco.CMS
NuGet
< 7.4.0
7.4.0

References

NVD — CVE-2015-8813 NVD
https://nvd.nist.gov/vuln/detail/CVE-2015-8813
Security Fix Commit FIX COMMIT
https://github.com/umbraco/Umbraco-CMS/commit/924a016ffe7ae7ea6d516c07a7852f0095eddbce
web.archive.org/web/20230608160721/... WEB
https://web.archive.org/web/20230608160721/https://issues.umbraco.org/issue/U4-7457
Umbraco.CMS Security Information SECURITY
http://www.openwall.com/lists/oss-security/2016/02/16/10
Umbraco.CMS Security Information SECURITY
http://www.openwall.com/lists/oss-security/2016/02/17/1
Umbraco.CMS Security Information SECURITY
http://www.openwall.com/lists/oss-security/2016/02/17/5
Umbraco.CMS Security Information SECURITY
http://www.openwall.com/lists/oss-security/2016/02/18/8

Frequently Asked Questions

What is CVE-2015-8813?
CVE-2015-8813 is a security vulnerability in Umbraco.CMS involving Umbraco CMS vulnerable to CSRF under CWE-918: Server-Side Request Forgery (SSRF).
Which Umbraco.CMS versions are affected?
Affected versions include releases prior to 7.4.0 across affected packages: Umbraco.CMS.
What version fixes CVE-2015-8813?
Upgrading to 7.4.0 (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 7.4.0. Upgrade your dependency to 7.4.0 or later.
What is the CVSS score of CVE-2015-8813?
CVE-2015-8813 has a CVSS v3.1 base score of 8.2 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N.
What CWE is associated with CVE-2015-8813?
CVE-2015-8813 is classified under CWE-918: Server-Side Request Forgery (SSRF) (The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.).
How can I check NuGet dependencies for CVE-2015-8813?
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-x34j-wxq8-7vcm",
  "modified" : "2023-08-03T22:13:29Z",
  "published" : "2022-05-17T02:56:23Z",
  "aliases" : [ "CVE-2015-8813" ],
  "summary" : "Umbraco CMS vulnerable to CSRF",
  "details" : "The `Page_Load` function in [Umbraco.Web/umbraco.presentation/umbraco/dashboard/FeedProxy.aspx.cs](https://github.com/umbraco/Umbraco-CMS/commit/924a016ffe7ae7ea6d516c07a7852f0095eddbce#diff-2899f01df84571577834f97a81637c65e20178ec6129b76c02f99789b23cf72e) in Umbraco before 7.4.0 allows remote attackers to conduct server-side request forgery (SSRF) attacks via the url parameter.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Umbraco.CMS"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "7.4.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2015-8813"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/umbraco/Umbraco-CMS/commit/924a016ffe7ae7ea6d516c07a7852f0095eddbce"
  }, {
    "type" : "WEB",
    "url" : "https://web.archive.org/web/20230608160721/https://issues.umbraco.org/issue/U4-7457"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2016/02/16/10"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2016/02/17/1"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2016/02/17/5"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2016/02/18/8"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-918" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-08-03T22:13:29Z",
    "nvd_published_at" : "2017-03-03T16:59:00Z"
  }
}