CVE-2018-5216: Radiant Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-mvw8-v767-qhjm
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CVSS 5.4
CWE-79
Published
Advisory Summary

CVE-2018-5216 is a MODERATE (CVSS 5.4) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Radiant libraries in the RubyGems ecosystem. The issue involves radiant cms vulnerable to cross-site scripting. Remediation is available in the latest vendor maintenance releases.

CVE-2018-5216 at a Glance

CVE Identifier CVE-2018-5216
GHSA Identifier GHSA-mvw8-v767-qhjm
Severity MODERATE
CVSS v3.1 Base Score 5.4
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Radiant
Package Ecosystem RubyGems
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:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
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-2018-5216

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

radiant fixed: Latest secure release 
Upgrade radiant to Latest secure release
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 radiant

How to Check if You Are Affected

To determine whether your application is affected by CVE-2018-5216, inspect your project dependencies for Radiant:

inspect dependencies for radiant

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

Radiant CMS 1.1.4 has XSS via crafted Markdown input in the `part_body_content` parameter to an `admin/pages/*/edit `resource.

CVE-2018-5216 Affected Radiant Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
radiant
gem/radiant
RubyGems
≤ 1.1.4

References

NVD — CVE-2018-5216 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-5216
Radiant Source Repository REPOSITORY
https://github.com/imsebao/404team
Radiant Source Repository REPOSITORY
https://github.com/imsebao/404team/blob/master/radiantcms.md

Frequently Asked Questions

What is CVE-2018-5216?
CVE-2018-5216 is a security vulnerability in Radiant involving Radiant CMS vulnerable to Cross-site Scripting under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Radiant versions are affected?
Affected versions include releases prior to current release patches across affected packages: radiant.
What version fixes CVE-2018-5216?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is radiant affected?
Yes, radiant is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2018-5216?
CVE-2018-5216 has a CVSS v3.1 base score of 5.4 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2018-5216?
CVE-2018-5216 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 RubyGems dependencies for CVE-2018-5216?
Run the dependency tree command: 'inspect dependencies for radiant'. 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-mvw8-v767-qhjm",
  "modified" : "2023-01-26T21:19:48Z",
  "published" : "2018-01-06T01:11:52Z",
  "aliases" : [ "CVE-2018-5216" ],
  "summary" : "Radiant CMS vulnerable to Cross-site Scripting",
  "details" : "Radiant CMS 1.1.4 has XSS via crafted Markdown input in the `part_body_content` parameter to an `admin/pages/*/edit `resource.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "radiant"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.1.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-5216"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/imsebao/404team"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/imsebao/404team/blob/master/radiantcms.md"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-16T21:47:23Z",
    "nvd_published_at" : null
  }
}