CVE-2018-25049: Email existence Email-existence Inefficient Regular Expression Complexity Vulnerability

HIGH
Advisory Identifier: GHSA-p27h-4cpf-fw48
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CVSS 7.5
CWE-1333
Published
Advisory Summary

CVE-2018-25049 is a HIGH (CVSS 7.5) email-existence inefficient regular expression complexity vulnerability (CWE-1333: Inefficient Regular Expression Complexity) affecting Email existence libraries in the npm ecosystem. The issue involves email-existence inefficient regular expression complexity vulnerability. Remediation is available in the latest vendor maintenance releases.

CVE-2018-25049 at a Glance

CVE Identifier CVE-2018-25049
GHSA Identifier GHSA-p27h-4cpf-fw48
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-1333: Inefficient Regular Expression Complexity
Affected Product Email existence
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-2018-25049

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

email-existence fixed: Latest secure release 
npm install email-existence@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: 

npm ls email-existence

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2018-25049, inspect your project dependencies using npm:

npm ls email-existence

Analyze the terminal output to locate any version of Email existence 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: The npm ls email-existence 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 Email existence, 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 email-existence. It has been rated as problematic. Affected by this issue is some unknown functionality of the file `index.js`. The manipulation leads to inefficient regular expression complexity. The name of the patch is 0029ba71b6ad0d8ec0baa2ecc6256d038bdd9b56. It is recommended to apply a patch to fix this issue. VDB-216854 is the identifier assigned to this vulnerability.

CVE-2018-25049 Affected Email existence Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
email-existence
npm/email-existence
npm
≤ 0.1.6

References

NVD — CVE-2018-25049 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-25049
Email existence Source Repository REPOSITORY
https://github.com/nmanousos/email-existence/pull/37
Security Fix Commit FIX COMMIT
https://github.com/nmanousos/email-existence/commit/0029ba71b6ad0d8ec0baa2ecc6256d038bdd9b56
Email existence Source Repository REPOSITORY
https://github.com/nmanousos/email-existence
vuldb.com/ WEB
https://vuldb.com/?ctiid.216854
vuldb.com/ WEB
https://vuldb.com/?id.216854

Frequently Asked Questions

What is CVE-2018-25049?
CVE-2018-25049 is a security vulnerability in Email existence involving email-existence Inefficient Regular Expression Complexity vulnerability under CWE-1333: Inefficient Regular Expression Complexity.
Which Email existence versions are affected?
Affected versions include releases prior to current release patches across affected packages: email-existence.
What version fixes CVE-2018-25049?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is email-existence affected?
Yes, email-existence 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-2018-25049?
CVE-2018-25049 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-2018-25049?
CVE-2018-25049 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-2018-25049?
Run the dependency tree command: 'npm ls email-existence'. 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-p27h-4cpf-fw48",
  "modified" : "2023-01-10T21:42:08Z",
  "published" : "2022-12-27T09:30:41Z",
  "aliases" : [ "CVE-2018-25049" ],
  "summary" : "email-existence Inefficient Regular Expression Complexity vulnerability",
  "details" : "A vulnerability was found in email-existence. It has been rated as problematic. Affected by this issue is some unknown functionality of the file `index.js`. The manipulation leads to inefficient regular expression complexity. The name of the patch is 0029ba71b6ad0d8ec0baa2ecc6256d038bdd9b56. It is recommended to apply a patch to fix this issue. VDB-216854 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" : "email-existence"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.1.6"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-25049"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/nmanousos/email-existence/pull/37"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/nmanousos/email-existence/commit/0029ba71b6ad0d8ec0baa2ecc6256d038bdd9b56"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/nmanousos/email-existence"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/?ctiid.216854"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/?id.216854"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1333" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-12-30T17:40:18Z",
    "nvd_published_at" : "2022-12-27T09:15:00Z"
  }
}