CVE-2021-44684: Github todos Denial of Service Vulnerability

CRITICAL
Advisory Identifier: GHSA-792j-9wj3-j634
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CVSS 9.8
CWE-78
Published
Advisory Summary

CVE-2021-44684 is a CRITICAL (CVSS 9.8) denial of service vulnerability (CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')) affecting Github todos libraries in the npm ecosystem. The issue involves command injection in github-todos. Remediation is available in the latest vendor maintenance releases.

CVE-2021-44684 at a Glance

CVE Identifier CVE-2021-44684
GHSA Identifier GHSA-792j-9wj3-j634
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Product Github todos
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 9.8

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:H/I:H/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 High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2021-44684

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

github-todos fixed: Latest secure release 
npm install github-todos@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 github-todos

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2021-44684, inspect your project dependencies using npm:

npm ls github-todos

Analyze the terminal output to locate any version of Github todos 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 github-todos 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-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'), where the product constructs all or part of an os command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended os command when it is sent to a downstream component. In Github todos, 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

naholyr github-todos 3.1.0 is vulnerable to command injection. The range argument for the _hook subcommand is concatenated without any validation, and is directly used by the exec function.

CVE-2021-44684 Affected Github todos Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
github-todos
npm/github-todos
npm
≤ 3.1.0

References

NVD — CVE-2021-44684 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-44684
Github todos Source Repository REPOSITORY
https://github.com/dwisiswant0/advisory/issues/5
advisory.dw1.io/5 WEB
https://advisory.dw1.io/5

Frequently Asked Questions

What is CVE-2021-44684?
CVE-2021-44684 is a security vulnerability in Github todos involving Command injection in github-todos under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection').
Which Github todos versions are affected?
Affected versions include releases prior to current release patches across affected packages: github-todos.
What version fixes CVE-2021-44684?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is github-todos affected?
Yes, github-todos 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-2021-44684?
CVE-2021-44684 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2021-44684?
CVE-2021-44684 is classified under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') (The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.).
How can I check npm dependencies for CVE-2021-44684?
Run the dependency tree command: 'npm ls github-todos'. 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-792j-9wj3-j634",
  "modified" : "2023-09-07T18:46:54Z",
  "published" : "2021-12-10T20:30:52Z",
  "aliases" : [ "CVE-2021-44684" ],
  "summary" : "Command injection in github-todos",
  "details" : "naholyr github-todos 3.1.0 is vulnerable to command injection. The range argument for the _hook subcommand is concatenated without any validation, and is directly used by the exec function.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "github-todos"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "3.1.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-44684"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/dwisiswant0/advisory/issues/5"
  }, {
    "type" : "WEB",
    "url" : "https://advisory.dw1.io/5"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-78" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-12-08T20:28:47Z",
    "nvd_published_at" : "2021-12-07T00:15:00Z"
  }
}