GHSA-52cw-pvq9-9m5v: Silverstripe/framework Silverstripe Uses TinyMCE Which Allows Vulnerability

MODERATE
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CVSS 5.4
CWE-1395 CWE-79
Published
Advisory Summary

GHSA-52cw-pvq9-9m5v is a MODERATE (CVSS 5.4) silverstripe uses tinymce which allows vulnerability (CWE-1395: Dependency on Vulnerable Third-Party Component) affecting Silverstripe/framework libraries in the Packagist ecosystem. The issue involves silverstripe uses tinymce which allows svg files linked in object tags. Remediation is available by upgrading affected packages to version 5.2.16.

GHSA-52cw-pvq9-9m5v at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-52cw-pvq9-9m5v
Severity MODERATE
CVSS v3.1 Base Score 5.4
CWE Classification CWE-1395: Dependency on Vulnerable Third-Party Component
Affected Product Silverstripe/framework
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 5.4

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N).

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

How to Fix GHSA-52cw-pvq9-9m5v

To remediate this vulnerability, upgrade all affected Silverstripe/framework 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/framework fixed: 5.2.16 
Upgrade silverstripe/framework to 5.2.16
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/framework

How to Check if You Are Affected

To determine whether your application is affected by GHSA-52cw-pvq9-9m5v, inspect your project dependencies for Silverstripe/framework:

inspect dependencies for silverstripe/framework

Analyze the terminal output to locate any version of Silverstripe/framework in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.2.16), 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-1395: Dependency on Vulnerable Third-Party Component, where the product has a dependency on a third-party component that contains one or more known vulnerabilities. In Silverstripe/framework, 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

### Impact TinyMCE v6 has a configuration value `convert_unsafe_embeds` set to `false` which allows svg files containing javascript to be used in `<object>` or `<embed>` tags, which can be used as a vector for XSS attacks. Note that `<embed>` tags are not allowed by default. After patching the default value of `convert_unsafe_embeds` will be set to `true`. This means that `<object>` tags will be converted to iframes instead the next time the page is saved, which may break any pages that rely upon previously saved `<object>` tags. Developers can override this configuration if desired to revert to the original behaviour. We reviewed the potential impact of this vulnerability within the context of Silverstripe CMS. We concluded this is a medium impact vulnerability given how TinyMCE is used by Silverstripe CMS. ### References: - https://www.silverstripe.org/download/security-releases/ss-2024-001 - https://github.com/advisories/GHSA-5359-pvf2-pw78

GHSA-52cw-pvq9-9m5v Affected Silverstripe/framework Versions

1 component(s)
Fixed Versions:
5.2.16
Product / Package Ecosystem Affected Versions Fixed Version
silverstripe/framework
 Packagist
< 5.2.16
5.2.16

References

GitHub Advisory / Wiki ADVISORY
https://github.com/silverstripe/silverstripe-framework/security/advisories/GHSA-52cw-pvq9-9m5v
Silverstripe/framework Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/framework/SS-2024-001.yaml
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-5359-pvf2-pw78
Silverstripe/framework Source Repository REPOSITORY
https://github.com/silverstripe/silverstripe-framework
Silverstripe/framework Release RELEASE
https://www.silverstripe.org/download/security-releases/ss-2024-001

Frequently Asked Questions

What is GHSA-52cw-pvq9-9m5v?
GHSA-52cw-pvq9-9m5v is a security vulnerability in Silverstripe/framework involving Silverstripe uses TinyMCE which allows svg files linked in object tags under CWE-1395: Dependency on Vulnerable Third-Party Component.
Which Silverstripe/framework versions are affected?
Affected versions include releases prior to 5.2.16 across affected packages: silverstripe/framework.
What version fixes GHSA-52cw-pvq9-9m5v?
Upgrading to 5.2.16 (or the latest patched release for your respective branch) resolves the vulnerability.
Is silverstripe/framework affected?
Yes, silverstripe/framework is affected in releases prior to 5.2.16. Upgrade your dependency to 5.2.16 or later.
What is the CVSS score of GHSA-52cw-pvq9-9m5v?
GHSA-52cw-pvq9-9m5v has a CVSS v3.1 base score of 5.4 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.
What CWE is associated with GHSA-52cw-pvq9-9m5v?
GHSA-52cw-pvq9-9m5v is classified under CWE-1395: Dependency on Vulnerable Third-Party Component (The product has a dependency on a third-party component that contains one or more known vulnerabilities.).
How can I check Packagist dependencies for GHSA-52cw-pvq9-9m5v?
Run the dependency tree command: 'inspect dependencies for silverstripe/framework'. 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-52cw-pvq9-9m5v",
  "modified" : "2024-07-22T16:54:34Z",
  "published" : "2024-07-17T16:00:48Z",
  "aliases" : [ ],
  "summary" : "Silverstripe uses TinyMCE which allows svg files linked in object tags",
  "details" : "### Impact\nTinyMCE v6 has a configuration value `convert_unsafe_embeds` set to `false` which allows svg files containing javascript to be used in `<object>` or `<embed>` tags, which can be used as a vector for XSS attacks.\n\nNote that `<embed>` tags are not allowed by default.\n\nAfter patching the default value of `convert_unsafe_embeds` will be set to `true`. This means that `<object>` tags will be converted to iframes instead the next time the page is saved, which may break any pages that rely upon previously saved `<object>` tags. Developers can override this configuration if desired to revert to the original behaviour.\n\nWe reviewed the potential impact of this vulnerability within the context of Silverstripe CMS. We concluded this is a medium impact vulnerability given how TinyMCE is used by Silverstripe CMS.\n\n### References:\n- https://www.silverstripe.org/download/security-releases/ss-2024-001\n- https://github.com/advisories/GHSA-5359-pvf2-pw78\n\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "silverstripe/framework"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "5.2.16"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/silverstripe/silverstripe-framework/security/advisories/GHSA-52cw-pvq9-9m5v"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/framework/SS-2024-001.yaml"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-5359-pvf2-pw78"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/silverstripe/silverstripe-framework"
  }, {
    "type" : "WEB",
    "url" : "https://www.silverstripe.org/download/security-releases/ss-2024-001"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1395", "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-07-17T16:00:48Z",
    "nvd_published_at" : null
  }
}