CVE-2016-1000233: Swagger ui Cross-Site Scripting Vulnerability

HIGH
Advisory Identifier: GHSA-mrx7-8hxf-f853
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CWE-79
Published
Advisory Summary

CVE-2016-1000233 is a HIGH cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Swagger ui libraries in the npm ecosystem. The issue involves cross-site scripting in swagger-ui. Remediation is available by upgrading affected packages to version 2.2.1.

CVE-2016-1000233 at a Glance

CVE Identifier CVE-2016-1000233
GHSA Identifier GHSA-mrx7-8hxf-f853
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Swagger ui
Package Ecosystem npm
Published Date
Last Updated

How to Fix CVE-2016-1000233

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

swagger-ui fixed: 2.2.1 
npm install swagger-ui@2.2.1
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 swagger-ui

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2016-1000233, inspect your project dependencies using npm:

npm ls swagger-ui

Analyze the terminal output to locate any version of Swagger ui in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.2.1), your application is affected.

Note: The npm ls swagger-ui 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 Swagger ui, 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

Affected versions of `swagger-ui` are vulnerable to cross-site scripting. This vulnerability exists because `swagger-ui` automatically executes external Javascript that is loaded in via the `url` query string parameter when a `Content-Type: application/javascript` header is included. An attacker can create a server that replies with a malicious script and the proper content-type, and then craft a `swagger-ui` URL that includes the location to their server/script in the `url` query string parameter. When viewed, such a link would execute the attacker's malicious script. ## Recommendation Update to 2.2.1 or later.

CVE-2016-1000233 Affected Swagger ui Versions

1 component(s)
Fixed Versions:
2.2.1
Product / Package Ecosystem Affected Versions Fixed Version
swagger-ui
npm/swagger-ui
npm
< 2.2.1
2.2.1

References

NVD — CVE-2016-1000233 NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-1000233
Swagger ui Source Repository REPOSITORY
https://github.com/swagger-api/swagger-ui/issues/1863
Security Fix Commit FIX COMMIT
https://github.com/swagger-api/swagger-ui/commit/331d2be070d89162aa3174a8773ae4a0093f78bc
Swagger ui Source Repository REPOSITORY
https://github.com/swagger-api/swagger-ui
www.npmjs.com/advisories/131 WEB
https://www.npmjs.com/advisories/131

Frequently Asked Questions

What is CVE-2016-1000233?
CVE-2016-1000233 is a security vulnerability in Swagger ui involving Cross-Site Scripting in swagger-ui under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Swagger ui versions are affected?
Affected versions include releases prior to 2.2.1 across affected packages: swagger-ui.
What version fixes CVE-2016-1000233?
Upgrading to 2.2.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is swagger-ui affected?
Yes, swagger-ui is affected in releases prior to 2.2.1. Upgrade your dependency to 2.2.1 or later.
What CWE is associated with CVE-2016-1000233?
CVE-2016-1000233 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-2016-1000233?
Run the dependency tree command: 'npm ls swagger-ui'. 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-mrx7-8hxf-f853",
  "modified" : "2021-09-23T21:33:20Z",
  "published" : "2020-09-01T15:36:27Z",
  "aliases" : [ "CVE-2016-1000233" ],
  "summary" : "Cross-Site Scripting in swagger-ui",
  "details" : "Affected versions of `swagger-ui` are vulnerable to cross-site scripting. This vulnerability exists because `swagger-ui` automatically executes external Javascript that is loaded in via the `url` query string parameter when a `Content-Type: application/javascript` header is included.\n\nAn attacker can create a server that replies with a malicious script and the proper content-type, and then craft a `swagger-ui` URL that includes the location to their server/script in the `url` query string parameter. When viewed, such a link would execute the attacker's malicious script.\n\n\n## Recommendation\n\nUpdate to 2.2.1 or later.",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "swagger-ui"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.2.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2016-1000233"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/swagger-api/swagger-ui/issues/1863"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/swagger-api/swagger-ui/commit/331d2be070d89162aa3174a8773ae4a0093f78bc"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/swagger-api/swagger-ui"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/131"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-08-31T18:11:55Z",
    "nvd_published_at" : null
  }
}