CVE-2017-14498: Silverstripe/cms Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-j696-6m57-mcrv
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CVSS 6.1
CWE-79
Published
Advisory Summary

CVE-2017-14498 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Silverstripe/cms libraries in the Packagist ecosystem. The issue involves silverstripe cms xss vulnerability. Remediation is available by upgrading affected packages to version 3.6.1.

CVE-2017-14498 at a Glance

CVE Identifier CVE-2017-14498
GHSA Identifier GHSA-j696-6m57-mcrv
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Silverstripe/cms
Package Ecosystem Packagist
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:3.0/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-2017-14498

To remediate this vulnerability, upgrade all affected Silverstripe/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.

silverstripe/cms fixed: 3.6.1 
Upgrade silverstripe/cms to 3.6.1
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 silverstripe/cms

How to Check if You Are Affected

To determine whether your application is affected by CVE-2017-14498, inspect your project dependencies for Silverstripe/cms:

inspect dependencies for silverstripe/cms

Analyze the terminal output to locate any version of Silverstripe/cms in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.6.1), 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 Silverstripe/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

SilverStripe CMS before 3.6.1 has XSS via an SVG document that is mishandled by (1) the Insert Media option in the content editor or (2) an admin/assets/add pathname, as demonstrated by the admin/pages/edit/EditorToolbar/MediaForm/field/AssetUploadField/upload URI, aka issue SS-2017-017.

CVE-2017-14498 Affected Silverstripe/cms Versions

1 component(s)
Fixed Versions:
3.6.1
Product / Package Ecosystem Affected Versions Fixed Version
silverstripe/cms
 Packagist
< 3.6.1
3.6.1

References

NVD — CVE-2017-14498 NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-14498
Security Fix Commit FIX COMMIT
https://github.com/silverstripe/silverstripe-framework/commit/25b77a2ff8deabe8e8894002b9a5647eaec27b0a
Security Fix Commit FIX COMMIT
https://github.com/silverstripe/silverstripe-installer/commit/c25478bef75cc5482852e80a1fa6f1f0e6460e39
docs.silverstripe.org/en/3/changelogs/3.6... WEB
https://docs.silverstripe.org/en/3/changelogs/3.6.1
lists.openwall.net/full-disclosure/201... WEB
http://lists.openwall.net/full-disclosure/2017/09/14/2

Frequently Asked Questions

What is CVE-2017-14498?
CVE-2017-14498 is a security vulnerability in Silverstripe/cms involving Silverstripe CMS XSS Vulnerability under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Silverstripe/cms versions are affected?
Affected versions include releases prior to 3.6.1 across affected packages: silverstripe/cms.
What version fixes CVE-2017-14498?
Upgrading to 3.6.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is silverstripe/cms affected?
Yes, silverstripe/cms is affected in releases prior to 3.6.1. Upgrade your dependency to 3.6.1 or later.
What is the CVSS score of CVE-2017-14498?
CVE-2017-14498 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2017-14498?
CVE-2017-14498 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 Packagist dependencies for CVE-2017-14498?
Run the dependency tree command: 'inspect dependencies for silverstripe/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-j696-6m57-mcrv",
  "modified" : "2023-07-27T00:42:17Z",
  "published" : "2022-05-17T00:29:00Z",
  "aliases" : [ "CVE-2017-14498" ],
  "summary" : "Silverstripe CMS XSS Vulnerability",
  "details" : "SilverStripe CMS before 3.6.1 has XSS via an SVG document that is mishandled by (1) the Insert Media option in the content editor or (2) an admin/assets/add pathname, as demonstrated by the admin/pages/edit/EditorToolbar/MediaForm/field/AssetUploadField/upload URI, aka issue SS-2017-017.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "silverstripe/cms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.6.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2017-14498"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/silverstripe/silverstripe-framework/commit/25b77a2ff8deabe8e8894002b9a5647eaec27b0a"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/silverstripe/silverstripe-installer/commit/c25478bef75cc5482852e80a1fa6f1f0e6460e39"
  }, {
    "type" : "WEB",
    "url" : "https://docs.silverstripe.org/en/3/changelogs/3.6.1"
  }, {
    "type" : "WEB",
    "url" : "http://lists.openwall.net/full-disclosure/2017/09/14/2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-27T00:42:17Z",
    "nvd_published_at" : "2017-09-15T18:29:00Z"
  }
}