CVE-2018-19048: Simditor Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-8v67-x8q5-3x3g
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CVSS 6.1
CWE-79
Published
Advisory Summary

CVE-2018-19048 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Simditor libraries in the npm ecosystem. The issue involves cross-site scripting in simditor. Remediation is available by upgrading affected packages to version 2.3.22.

CVE-2018-19048 at a Glance

CVE Identifier CVE-2018-19048
GHSA Identifier GHSA-8v67-x8q5-3x3g
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 Simditor
Package Ecosystem npm
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-2018-19048

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

simditor fixed: 2.3.22 
npm install simditor@2.3.22
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls simditor

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2018-19048, inspect your project dependencies using npm:

npm ls simditor

Analyze the terminal output to locate any version of Simditor in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.3.22), your application is affected.

Note: The npm ls simditor command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

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 Simditor, 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

Versions of `simditor` prior to 2.3.22 are vulnerable to Cross-Site Scripting. The package does not sanitize user input that is rendered with `innerHTML`, allowing attackers to execute arbitrary JavaScript. ## Recommendation Upgrade to version 2.3.22 or later.

CVE-2018-19048 Affected Simditor Versions

1 component(s)
Fixed Versions:
2.3.22
Product / Package Ecosystem Affected Versions Fixed Version
simditor
npm/simditor
npm
< 2.3.22
2.3.22

References

NVD — CVE-2018-19048 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-19048
Security Fix Commit FIX COMMIT
https://github.com/mycolorway/simditor/commit/ef01a643cbb7f8163535d6bfb71135f80ec6a6fd
Simditor Source Repository REPOSITORY
https://github.com/hkglue/simditor_demo.git
Simditor Source Repository REPOSITORY
https://github.com/hkglue/simditor_dom_xss/blob/master/README.md
Simditor Release RELEASE
https://github.com/mycolorway/simditor/releases/tag/v2.3.22
snyk.io/vuln/snyk-js-simdit... WEB
https://snyk.io/vuln/SNYK-JS-SIMDITOR-174638
www.npmjs.com/advisories/884 WEB
https://www.npmjs.com/advisories/884

Frequently Asked Questions

What is CVE-2018-19048?
CVE-2018-19048 is a security vulnerability in Simditor involving Cross-Site Scripting in simditor under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Simditor versions are affected?
Affected versions include releases prior to 2.3.22 across affected packages: simditor.
What version fixes CVE-2018-19048?
Upgrading to 2.3.22 (or the latest patched release for your respective branch) resolves the vulnerability.
Is simditor affected?
Yes, simditor is affected in releases prior to 2.3.22. Upgrade your dependency to 2.3.22 or later.
What is the CVSS score of CVE-2018-19048?
CVE-2018-19048 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-2018-19048?
CVE-2018-19048 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 npm dependencies for CVE-2018-19048?
Run the dependency tree command: 'npm ls simditor'. 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-8v67-x8q5-3x3g",
  "modified" : "2021-08-04T14:53:05Z",
  "published" : "2019-05-14T04:01:27Z",
  "aliases" : [ "CVE-2018-19048" ],
  "summary" : "Cross-Site Scripting in simditor",
  "details" : "Versions of `simditor` prior to 2.3.22 are vulnerable to Cross-Site Scripting. The package does not sanitize user input that is rendered with `innerHTML`, allowing attackers to execute arbitrary JavaScript.\n\n\n## Recommendation\n\nUpgrade to version 2.3.22 or later.",
  "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" : "npm",
      "name" : "simditor"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.3.22"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-19048"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mycolorway/simditor/commit/ef01a643cbb7f8163535d6bfb71135f80ec6a6fd"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/hkglue/simditor_demo.git"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/hkglue/simditor_dom_xss/blob/master/README.md"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mycolorway/simditor/releases/tag/v2.3.22"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-SIMDITOR-174638"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/884"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2019-05-14T01:08:11Z",
    "nvd_published_at" : null
  }
}