Vulnerabilities in pkg:npm/@thi.ng/egf

PACKAGE
Advisory Identifier: GHSA-rj44-gpjc-29r7
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Advisory Summary

CVE-2021-21412 is a MODERATE (CVSS 6.4) [thi.ng/egf] potential arbitrary code execution vulnerability (CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')) affecting @thi.ng/egf libraries in the npm ecosystem. The issue involves [thi.ng/egf] potential arbitrary code execution of `#gpg`-tagged property values. Remediation is available by upgrading affected packages to version 0.4.0.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/@thi.ng/egf

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:npm/@thi.ng/egf. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-rj44-gpjc-29r7 CVE-2021-21412 MODERATE [thi.ng/egf] Potential arbitrary code execution of `#gpg`-tagged property values

CVE-2021-21412 at a Glance

CVE Identifier CVE-2021-21412
GHSA Identifier GHSA-rj44-gpjc-29r7
Severity MODERATE
CVSS v3.1 Base Score 6.4
CWE Classification CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Product @thi.ng/egf
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 6.4

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Changed (S:C)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2021-21412

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

@thi.ng/egf fixed: 0.4.0 
npm install @thi.ng/egf@0.4.0
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 @thi.ng/egf

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2021-21412, inspect your project dependencies using npm:

npm ls @thi.ng/egf

Analyze the terminal output to locate any version of @thi.ng/egf in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.4.0), your application is affected.

Note: The npm ls @thi.ng/egf 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 @thi.ng/egf, 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 Potential for arbitrary code execution in `#gpg`-tagged property values (only if `decrypt: true` option is enabled) ### Patches [A fix](https://github.com/thi-ng/umbrella/commit/3e14765d6bfd8006742c9e7860bc7d58ae94dfa5) has already been released as v0.4.0 ### Workarounds By default, EGF parse functions do NOT attempt to decrypt values (since GPG is only available in non-browser env). However, if GPG encrypted values are used/required: 1. Perform a regex search for `#gpg`-tagged values in the EGF source file/string and check for backtick (\`) chars in the encrypted value string 2. Replace/remove them or skip parsing if present... ### References https://github.com/thi-ng/umbrella/security/advisories/GHSA-rj44-gpjc-29r7#advisory-comment-65261 ### For more information If you have any questions or comments about this advisory, please open an issue in the [thi.ng/umbrella repo](https://github.com/thi-ng/umbrella/issues), of which this package is part of.

CVE-2021-21412 Affected @thi.ng/egf Versions

1 component(s)
Fixed Versions:
0.4.0
Product / Package Ecosystem Affected Versions Fixed Version
@thi.ng/egf
npm/@thi.ng/egf
npm
< 0.4.0
0.4.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/thi-ng/umbrella/security/advisories/GHSA-rj44-gpjc-29r7
NVD — CVE-2021-21412 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21412
Security Fix Commit FIX COMMIT
https://github.com/thi-ng/umbrella/commit/88f61656e5f5cfba960013b8133186389efaf243
@thi.ng/egf Source Repository REPOSITORY
https://github.com/thi-ng/umbrella/blob/develop/packages/egf/CHANGELOG.md#040-2021-03-27
www.npmjs.com/package/@thi.ng/egf WEB
https://www.npmjs.com/package/@thi.ng/egf

Frequently Asked Questions

What is CVE-2021-21412?
CVE-2021-21412 is a security vulnerability in @thi.ng/egf involving [thi.ng/egf] Potential arbitrary code execution of `#gpg`-tagged property values under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection').
Which @thi.ng/egf versions are affected?
Affected versions include releases prior to 0.4.0 across affected packages: @thi.ng/egf.
What version fixes CVE-2021-21412?
Upgrading to 0.4.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is @thi.ng/egf affected?
Yes, @thi.ng/egf is affected in releases prior to 0.4.0. Upgrade your dependency to 0.4.0 or later.
What is the CVSS score of CVE-2021-21412?
CVE-2021-21412 has a CVSS v3.1 base score of 6.4 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2021-21412?
CVE-2021-21412 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-2021-21412?
Run the dependency tree command: 'npm ls @thi.ng/egf'. 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-rj44-gpjc-29r7",
  "modified" : "2021-03-30T20:20:04Z",
  "published" : "2021-04-06T17:22:41Z",
  "aliases" : [ "CVE-2021-21412" ],
  "summary" : "[thi.ng/egf] Potential arbitrary code execution of `#gpg`-tagged property values",
  "details" : "### Impact\n\nPotential for arbitrary code execution in `#gpg`-tagged property values (only if `decrypt: true` option is enabled)\n\n### Patches\n\n[A fix](https://github.com/thi-ng/umbrella/commit/3e14765d6bfd8006742c9e7860bc7d58ae94dfa5) has already been released as v0.4.0\n\n### Workarounds\n\nBy default, EGF parse functions do NOT attempt to decrypt values (since GPG is only available in non-browser env).\n\nHowever, if GPG encrypted values are used/required:\n\n1. Perform a regex search for `#gpg`-tagged values in the EGF source file/string and check for backtick (\\`) chars in the encrypted value string\n2. Replace/remove them or skip parsing if present...\n\n### References\n\nhttps://github.com/thi-ng/umbrella/security/advisories/GHSA-rj44-gpjc-29r7#advisory-comment-65261\n\n### For more information\n\nIf you have any questions or comments about this advisory, please open an issue in the [thi.ng/umbrella repo](https://github.com/thi-ng/umbrella/issues), of which this package is part of.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@thi.ng/egf"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.4.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/thi-ng/umbrella/security/advisories/GHSA-rj44-gpjc-29r7"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-21412"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/thi-ng/umbrella/commit/88f61656e5f5cfba960013b8133186389efaf243"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/thi-ng/umbrella/blob/develop/packages/egf/CHANGELOG.md#040-2021-03-27"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/package/@thi.ng/egf"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-78" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-03-30T17:40:22Z",
    "nvd_published_at" : "2021-03-30T18:15:00Z"
  }
}