CVE-2017-16021: Uri js Denial of Service Vulnerability

MODERATE
Advisory Identifier: GHSA-333w-rxj3-f55r
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CVSS 6.5
CWE-400 CWE-1333
Published
Advisory Summary

CVE-2017-16021 is a MODERATE (CVSS 6.5) denial of service vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Uri js libraries in the npm ecosystem. The issue involves regular expression denial of service in uri-js. Remediation is available by upgrading affected packages to version 3.0.0.

CVE-2017-16021 at a Glance

CVE Identifier CVE-2017-16021
GHSA Identifier GHSA-333w-rxj3-f55r
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Uri js
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 6.5

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:N/I:N/A:H).

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 None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2017-16021

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

uri-js fixed: 3.0.0 
npm install uri-js@3.0.0
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 uri-js

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2017-16021, inspect your project dependencies using npm:

npm ls uri-js

Analyze the terminal output to locate any version of Uri js in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.0.0), your application is affected.

Note: The npm ls uri-js 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-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Uri js, 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 `uri-js` is susceptible to a regular expression denial of service vulnerability when user input is sent to the `.parse()` method. ## Recommendation Update to v3.0.0 or later.

CVE-2017-16021 Affected Uri js Versions

1 component(s)
Fixed Versions:
3.0.0
Product / Package Ecosystem Affected Versions Fixed Version
uri-js
npm/uri-js
npm
< 3.0.0
3.0.0

References

NVD — CVE-2017-16021 NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-16021
Uri js Source Repository REPOSITORY
https://github.com/garycourt/uri-js/issues/12
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-333w-rxj3-f55r
Uri js Security Information SECURITY
https://nodesecurity.io/advisories/100
www.npmjs.com/advisories/100 WEB
https://www.npmjs.com/advisories/100

Frequently Asked Questions

What is CVE-2017-16021?
CVE-2017-16021 is a security vulnerability in Uri js involving Regular Expression Denial Of Service in uri-js under CWE-400: Uncontrolled Resource Consumption.
Which Uri js versions are affected?
Affected versions include releases prior to 3.0.0 across affected packages: uri-js.
What version fixes CVE-2017-16021?
Upgrading to 3.0.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is uri-js affected?
Yes, uri-js is affected in releases prior to 3.0.0. Upgrade your dependency to 3.0.0 or later.
What is the CVSS score of CVE-2017-16021?
CVE-2017-16021 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2017-16021?
CVE-2017-16021 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check npm dependencies for CVE-2017-16021?
Run the dependency tree command: 'npm ls uri-js'. 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-333w-rxj3-f55r",
  "modified" : "2024-04-22T19:37:18Z",
  "published" : "2018-07-24T20:00:30Z",
  "aliases" : [ "CVE-2017-16021" ],
  "summary" : "Regular Expression Denial Of Service in uri-js",
  "details" : "Affected versions of `uri-js` is susceptible to a regular expression denial of service vulnerability when user input is sent to the `.parse()` method.\n\n\n\n## Recommendation\n\nUpdate to v3.0.0 or later.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "uri-js"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2017-16021"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/garycourt/uri-js/issues/12"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-333w-rxj3-f55r"
  }, {
    "type" : "WEB",
    "url" : "https://nodesecurity.io/advisories/100"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/100"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1333", "CWE-400" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-16T20:53:45Z",
    "nvd_published_at" : "2018-06-04T19:29:01Z"
  }
}