CVE-2018-25079: Is url Is-url Inefficient Regular Expression Complexity Vulnerability

HIGH
Advisory Identifier: GHSA-p9w8-2mpq-49h9
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CVSS 7.5
CWE-1333
Published
Advisory Summary

CVE-2018-25079 is a HIGH (CVSS 7.5) is-url inefficient regular expression complexity vulnerability (CWE-1333: Inefficient Regular Expression Complexity) affecting Is url libraries in the npm ecosystem. The issue involves is-url inefficient regular expression complexity vulnerability. Remediation is available by upgrading affected packages to version 1.2.3.

CVE-2018-25079 at a Glance

CVE Identifier CVE-2018-25079
GHSA Identifier GHSA-p9w8-2mpq-49h9
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-1333: Inefficient Regular Expression Complexity
Affected Product Is url
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 7.5

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
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-2018-25079

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

is-url fixed: 1.2.3 
npm install is-url@1.2.3
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 is-url

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2018-25079, inspect your project dependencies using npm:

npm ls is-url

Analyze the terminal output to locate any version of Is url in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.2.3), your application is affected.

Note: The npm ls is-url 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-1333: Inefficient Regular Expression Complexity, where the product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential. In Is url, 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

A vulnerability was found in Segmentio is-url up to 1.2.2. It has been rated as problematic. Affected by this issue is an unknown functionality of the file index.js. The manipulation leads to inefficient regular expression complexity. The attack may be launched remotely. Upgrading to version 1.2.3 is able to address this issue. The name of the patch is 149550935c63a98c11f27f694a7c4a9479e53794. It is recommended to upgrade the affected component. VDB-220058 is the identifier assigned to this vulnerability.

CVE-2018-25079 Affected Is url Versions

1 component(s)
Fixed Versions:
1.2.3
Product / Package Ecosystem Affected Versions Fixed Version
is-url
npm/is-url
npm
< 1.2.3
1.2.3

References

NVD — CVE-2018-25079 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-25079
Is url Source Repository REPOSITORY
https://github.com/segmentio/is-url/pull/18
Security Fix Commit FIX COMMIT
https://github.com/segmentio/is-url/commit/149550935c63a98c11f27f694a7c4a9479e53794
Is url Source Repository REPOSITORY
https://github.com/segmentio/is-url
Is url Release RELEASE
https://github.com/segmentio/is-url/releases/tag/v1.2.3
vuldb.com/ WEB
https://vuldb.com/?ctiid.220058
vuldb.com/ WEB
https://vuldb.com/?id.220058

Frequently Asked Questions

What is CVE-2018-25079?
CVE-2018-25079 is a security vulnerability in Is url involving is-url Inefficient Regular Expression Complexity vulnerability under CWE-1333: Inefficient Regular Expression Complexity.
Which Is url versions are affected?
Affected versions include releases prior to 1.2.3 across affected packages: is-url.
What version fixes CVE-2018-25079?
Upgrading to 1.2.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is is-url affected?
Yes, is-url is affected in releases prior to 1.2.3. Upgrade your dependency to 1.2.3 or later.
What is the CVSS score of CVE-2018-25079?
CVE-2018-25079 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2018-25079?
CVE-2018-25079 is classified under CWE-1333: Inefficient Regular Expression Complexity (The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.).
How can I check npm dependencies for CVE-2018-25079?
Run the dependency tree command: 'npm ls is-url'. 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-p9w8-2mpq-49h9",
  "modified" : "2023-02-14T16:47:13Z",
  "published" : "2023-02-04T06:30:15Z",
  "aliases" : [ "CVE-2018-25079" ],
  "summary" : "is-url Inefficient Regular Expression Complexity vulnerability",
  "details" : "A vulnerability was found in Segmentio is-url up to 1.2.2. It has been rated as problematic. Affected by this issue is an unknown functionality of the file index.js. The manipulation leads to inefficient regular expression complexity. The attack may be launched remotely. Upgrading to version 1.2.3 is able to address this issue. The name of the patch is 149550935c63a98c11f27f694a7c4a9479e53794. It is recommended to upgrade the affected component. VDB-220058 is the identifier assigned to this vulnerability.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "is-url"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.2.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-25079"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/segmentio/is-url/pull/18"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/segmentio/is-url/commit/149550935c63a98c11f27f694a7c4a9479e53794"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/segmentio/is-url"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/segmentio/is-url/releases/tag/v1.2.3"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/?ctiid.220058"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/?id.220058"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1333" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-02-10T00:59:15Z",
    "nvd_published_at" : "2023-02-04T04:15:00Z"
  }
}