Vulnerabilities in pkg:npm/v8n

PACKAGE
Advisory Identifier: GHSA-xrx9-gj26-5wx9
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Advisory Summary

CVE-2022-35923 is a HIGH (CVSS 7.5) v8n vulnerable to inefficient regular vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting V8n libraries in the npm ecosystem. The issue involves v8n vulnerable to inefficient regular expression complexity. Remediation is available by upgrading affected packages to version 1.5.1.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/v8n

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:npm/v8n. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-xrx9-gj26-5wx9 CVE-2022-35923 HIGH v8n vulnerable to Inefficient Regular Expression Complexity

CVE-2022-35923 at a Glance

CVE Identifier CVE-2022-35923
GHSA Identifier GHSA-xrx9-gj26-5wx9
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product V8n
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-2022-35923

To remediate this vulnerability, upgrade all affected V8n dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

v8n fixed: 1.5.1 
npm install v8n@1.5.1
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 v8n

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2022-35923, inspect your project dependencies using npm:

npm ls v8n

Analyze the terminal output to locate any version of V8n in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.5.1), your application is affected.

Note: The npm ls v8n 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 V8n, 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

### Impact Inefficient regular expression complexity of `lowercase()` and `uppercase()` regex could lead to a denial of service attack. With a formed payload `'a' + 'a'.repeat(i) + 'A'`, only 32 characters payload could take 29443 ms time execution when testing `lowercase()`. The same issue happens with `uppercase()`. ### Patches v1.5.1 ### References [huntr.dev report](https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609) [_Regular Expression Denial of Service (ReDoS) and Catastrophic Backtracking_](https://snyk.io/blog/redos-and-catastrophic-backtracking/) ### For more information If you have any questions or comments about this advisory: * Open an issue in [v8n issues list](https://github.com/imbrn/v8n) * Email us at [brunodev02221@gmail.com](mailto:brunodev02221@gmail.com)

CVE-2022-35923 Affected V8n Versions

1 component(s)
Fixed Versions:
1.5.1
Product / Package Ecosystem Affected Versions Fixed Version
v8n
npm/v8n
npm
< 1.5.1
1.5.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/imbrn/v8n/security/advisories/GHSA-xrx9-gj26-5wx9
NVD — CVE-2022-35923 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-35923
Security Fix Commit FIX COMMIT
https://github.com/imbrn/v8n/commit/92393862156fad190c05ec3f6e2bc73308dcd2f9
V8n Source Repository REPOSITORY
https://github.com/imbrn/v8n
huntr.dev/bounties/2d92f644-5... WEB
https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609

Frequently Asked Questions

What is CVE-2022-35923?
CVE-2022-35923 is a security vulnerability in V8n involving v8n vulnerable to Inefficient Regular Expression Complexity under CWE-400: Uncontrolled Resource Consumption.
Which V8n versions are affected?
Affected versions include releases prior to 1.5.1 across affected packages: v8n.
What version fixes CVE-2022-35923?
Upgrading to 1.5.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is v8n affected?
Yes, v8n is affected in releases prior to 1.5.1. Upgrade your dependency to 1.5.1 or later.
What is the CVSS score of CVE-2022-35923?
CVE-2022-35923 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-2022-35923?
CVE-2022-35923 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-2022-35923?
Run the dependency tree command: 'npm ls v8n'. 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-xrx9-gj26-5wx9",
  "modified" : "2022-10-07T07:33:44Z",
  "published" : "2022-10-07T07:33:44Z",
  "aliases" : [ "CVE-2022-35923" ],
  "summary" : "v8n vulnerable to Inefficient Regular Expression Complexity",
  "details" : "### Impact\nInefficient regular expression complexity of `lowercase()` and `uppercase()` regex could lead to a denial of service attack. With a formed payload `'a' + 'a'.repeat(i) + 'A'`, only 32 characters payload could take 29443 ms time execution when testing `lowercase()`. The same issue happens with `uppercase()`.\n\n### Patches\nv1.5.1\n\n### References\n[huntr.dev report](https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609)\n[_Regular Expression Denial of Service (ReDoS) and Catastrophic Backtracking_](https://snyk.io/blog/redos-and-catastrophic-backtracking/)\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [v8n issues list](https://github.com/imbrn/v8n)\n* Email us at [brunodev02221@gmail.com](mailto:brunodev02221@gmail.com)\n",
  "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" : "v8n"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.5.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/imbrn/v8n/security/advisories/GHSA-xrx9-gj26-5wx9"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-35923"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/imbrn/v8n/commit/92393862156fad190c05ec3f6e2bc73308dcd2f9"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/imbrn/v8n"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1333", "CWE-400" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-10-07T07:33:44Z",
    "nvd_published_at" : "2022-08-02T20:15:00Z"
  }
}