GHSA-r97r-64vp-fghm: Silverstripe/cms Cross-Site Scripting Vulnerability

MODERATE
Share
CVSS 6.1
CWE-79
Published
Advisory Summary

GHSA-r97r-64vp-fghm 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 xss vulnerability via virtualpage. Remediation is available by upgrading affected packages to version 3.1.10.

GHSA-r97r-64vp-fghm at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-r97r-64vp-fghm
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:3.1/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 GHSA-r97r-64vp-fghm

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: 3.1.10 
Upgrade silverstripe/cms to 3.1.10
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 GHSA-r97r-64vp-fghm, 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 3.1.10), 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-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

A cross-site scripting vulnerability has been discovered in the VirtualPage class. This vulnerability can only be exploited if a user with CMS access has posted malicious or unescaped HTML into any of the textfields of a page which a VirtualPage refers to. This has been resolved by ensuring that VirtualPage safely escapes all field content.

GHSA-r97r-64vp-fghm Affected Silverstripe/cms Versions

1 component(s)
Fixed Versions:
3.1.10
Product / Package Ecosystem Affected Versions Fixed Version
silverstripe/cms
 Packagist
≥ 3.1.0
< 3.1.10
3.1.10

References

Silverstripe/cms Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/cms/SS-2015-005-1.yaml
Silverstripe/cms Source Repository REPOSITORY
https://github.com/silverstripe/silverstripe-cms
Silverstripe/cms Release RELEASE
https://www.silverstripe.org/software/download/security-releases/ss-2015-005

Frequently Asked Questions

What is GHSA-r97r-64vp-fghm?
GHSA-r97r-64vp-fghm is a security vulnerability in Silverstripe/cms involving Silverstripe XSS vulnerability via VirtualPage 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 3.1.10 across affected packages: silverstripe/cms.
What version fixes GHSA-r97r-64vp-fghm?
Upgrading to 3.1.10 (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 3.1.10. Upgrade your dependency to 3.1.10 or later.
What is the CVSS score of GHSA-r97r-64vp-fghm?
GHSA-r97r-64vp-fghm 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 GHSA-r97r-64vp-fghm?
GHSA-r97r-64vp-fghm 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 GHSA-r97r-64vp-fghm?
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-r97r-64vp-fghm",
  "modified" : "2024-05-22T18:53:38Z",
  "published" : "2024-05-22T18:53:38Z",
  "aliases" : [ ],
  "summary" : "Silverstripe XSS vulnerability via VirtualPage",
  "details" : "A cross-site scripting vulnerability has been discovered in the VirtualPage class.\n\nThis vulnerability can only be exploited if a user with CMS access has posted malicious or unescaped HTML into any of the textfields of a page which a VirtualPage refers to.\n\nThis has been resolved by ensuring that VirtualPage safely escapes all field content.",
  "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" : "Packagist",
      "name" : "silverstripe/cms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.1.0"
      }, {
        "fixed" : "3.1.10"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 3.1.9"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/cms/SS-2015-005-1.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/silverstripe/silverstripe-cms"
  }, {
    "type" : "WEB",
    "url" : "https://www.silverstripe.org/software/download/security-releases/ss-2015-005"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-05-22T18:53:38Z",
    "nvd_published_at" : null
  }
}