Vulnerabilities in pkg:npm/mosc

PACKAGE
Advisory Identifier: GHSA-j665-rvj7-2jv9
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Advisory Summary

CVE-2020-7672 is a HIGH (CVSS 8.6) code injection vulnerability (CWE-94: Improper Control of Generation of Code ('Code Injection')) affecting Mosc libraries in the npm ecosystem. The issue involves code injection in mosc. Remediation is available in the latest vendor maintenance releases.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/mosc

1 Known Advisory Record(s)

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

Advisory ID CVE / NVD Severity Summary
GHSA-j665-rvj7-2jv9 CVE-2020-7672 HIGH Code Injection in mosc

CVE-2020-7672 at a Glance

CVE Identifier CVE-2020-7672
GHSA Identifier GHSA-j665-rvj7-2jv9
Severity HIGH
CVSS v3.1 Base Score 8.6
CWE Classification CWE-94: Improper Control of Generation of Code ('Code Injection')
Affected Product Mosc
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 8.6

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:L/A:L).

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 Low (I:L)
Availability Low (A:L)

How to Fix CVE-2020-7672

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

mosc fixed: Latest secure release 
npm install mosc@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 mosc

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2020-7672, inspect your project dependencies using npm:

npm ls mosc

Analyze the terminal output to locate any version of Mosc 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 mosc 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-94: Improper Control of Generation of Code ('Code Injection'), where the product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. In Mosc, 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

mosc through 1.0.0 is vulnerable to Arbitrary Code Execution. User input provided to `properties` argument is executed by the `eval` function, resulting in code execution.

CVE-2020-7672 Affected Mosc Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
mosc
npm/mosc
npm
≤ 1.0.0

References

NVD — CVE-2020-7672 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-7672
snyk.io/vuln/snyk-js-mosc-5... WEB
https://snyk.io/vuln/SNYK-JS-MOSC-571492

Frequently Asked Questions

What is CVE-2020-7672?
CVE-2020-7672 is a security vulnerability in Mosc involving Code Injection in mosc under CWE-94: Improper Control of Generation of Code ('Code Injection').
Which Mosc versions are affected?
Affected versions include releases prior to current release patches across affected packages: mosc.
What version fixes CVE-2020-7672?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is mosc affected?
Yes, mosc 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-2020-7672?
CVE-2020-7672 has a CVSS v3.1 base score of 8.6 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L.
What CWE is associated with CVE-2020-7672?
CVE-2020-7672 is classified under CWE-94: Improper Control of Generation of Code ('Code Injection') (The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.).
How can I check npm dependencies for CVE-2020-7672?
Run the dependency tree command: 'npm ls mosc'. 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-j665-rvj7-2jv9",
  "modified" : "2021-07-29T18:11:51Z",
  "published" : "2021-05-17T21:00:17Z",
  "aliases" : [ "CVE-2020-7672" ],
  "summary" : "Code Injection in mosc",
  "details" : "mosc through 1.0.0 is vulnerable to Arbitrary Code Execution. User input provided to `properties` argument is executed by the `eval` function, resulting in code execution.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "mosc"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-7672"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-MOSC-571492"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-94" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-05-13T19:19:45Z",
    "nvd_published_at" : "2020-06-10T16:15:00Z"
  }
}