CVE-2021-33623: Trim newlines Remote Code Execution Vulnerability

HIGH
Advisory Identifier: GHSA-7p7h-4mm5-852v
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CVSS 7.5
CWE-400
Published
Advisory Summary

CVE-2021-33623 is a HIGH (CVSS 7.5) remote code execution vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Trim newlines libraries in the npm ecosystem. The issue involves uncontrolled resource consumption in trim-newlines. Remediation is available by upgrading affected packages to version 3.0.1, 4.0.1.

CVE-2021-33623 at a Glance

CVE Identifier CVE-2021-33623
GHSA Identifier GHSA-7p7h-4mm5-852v
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Trim newlines
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-2021-33623

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

trim-newlines fixed: 3.0.1 
npm install trim-newlines@3.0.1
trim-newlines fixed: 4.0.1 
npm install trim-newlines@4.0.1
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 trim-newlines

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2021-33623, inspect your project dependencies using npm:

npm ls trim-newlines

Analyze the terminal output to locate any version of Trim newlines in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.0.1), your application is affected.

Note: The npm ls trim-newlines 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 Trim newlines, 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

@rkesters/gnuplot is an easy to use node module to draw charts using gnuplot and ps2pdf. The trim-newlines package before 3.0.1 and 4.x before 4.0.1 for Node.js has an issue related to regular expression denial-of-service (ReDoS) for the `.end()` method.

CVE-2021-33623 Affected Trim newlines Versions

2 component(s)
Fixed Versions:
3.0.14.0.1
Product / Package Ecosystem Affected Versions Fixed Version
trim-newlines
npm/trim-newlines
npm
< 3.0.1
3.0.1
trim-newlines
npm/trim-newlines
npm
≥ 4.0.0
< 4.0.1
All 1 versions
4.0.0
4.0.1

References

NVD — CVE-2021-33623 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-33623
Security Fix Commit FIX COMMIT
https://github.com/sindresorhus/trim-newlines/commit/25246c6ce5eea1c82d448998733a6302a4350d91
Security Fix Commit FIX COMMIT
https://github.com/sindresorhus/trim-newlines/commit/b10d5f4afef832b16bc56d49fc52c68cbd403869
Trim newlines Source Repository REPOSITORY
https://github.com/sindresorhus/trim-newlines
Trim newlines Release RELEASE
https://github.com/sindresorhus/trim-newlines/releases/tag/v4.0.1
lists.debian.org/debian-lts-announce... WEB
https://lists.debian.org/debian-lts-announce/2022/12/msg00033.html
Trim newlines Security Information SECURITY
https://security.netapp.com/advisory/ntap-20210702-0007
www.npmjs.com/package/trim-newlin... WEB
https://www.npmjs.com/package/trim-newlines

Frequently Asked Questions

What is CVE-2021-33623?
CVE-2021-33623 is a security vulnerability in Trim newlines involving Uncontrolled Resource Consumption in trim-newlines under CWE-400: Uncontrolled Resource Consumption.
Which Trim newlines versions are affected?
Affected versions include releases prior to 3.0.1, 4.0.1 across affected packages: trim-newlines.
What version fixes CVE-2021-33623?
Upgrading to 3.0.1, 4.0.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is trim-newlines affected?
Yes, trim-newlines is affected in releases prior to 3.0.1, 4.0.1. Upgrade your dependency to 3.0.1, 4.0.1 or later.
What is the CVSS score of CVE-2021-33623?
CVE-2021-33623 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-2021-33623?
CVE-2021-33623 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-2021-33623?
Run the dependency tree command: 'npm ls trim-newlines'. 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-7p7h-4mm5-852v",
  "modified" : "2023-09-08T19:23:55Z",
  "published" : "2021-06-07T22:10:39Z",
  "aliases" : [ "CVE-2021-33623" ],
  "summary" : "Uncontrolled Resource Consumption in trim-newlines",
  "details" : "@rkesters/gnuplot is an easy to use node module to draw charts using gnuplot and ps2pdf. The trim-newlines package before 3.0.1 and 4.x before 4.0.1 for Node.js has an issue related to regular expression denial-of-service (ReDoS) for the `.end()` method.",
  "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" : "trim-newlines"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.0.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "trim-newlines"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.0.0"
      }, {
        "fixed" : "4.0.1"
      } ]
    } ],
    "versions" : [ "4.0.0" ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-33623"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/sindresorhus/trim-newlines/commit/25246c6ce5eea1c82d448998733a6302a4350d91"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/sindresorhus/trim-newlines/commit/b10d5f4afef832b16bc56d49fc52c68cbd403869"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/sindresorhus/trim-newlines"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/sindresorhus/trim-newlines/releases/tag/v4.0.1"
  }, {
    "type" : "WEB",
    "url" : "https://lists.debian.org/debian-lts-announce/2022/12/msg00033.html"
  }, {
    "type" : "WEB",
    "url" : "https://security.netapp.com/advisory/ntap-20210702-0007"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/package/trim-newlines"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-06-01T18:22:04Z",
    "nvd_published_at" : "2021-05-28T18:15:00Z"
  }
}