Vulnerabilities in pkg:npm/nis-utils

PACKAGE
Advisory Identifier: GHSA-gr58-j5wh-m333
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Advisory Summary

CVE-2020-7703 is a CRITICAL (CVSS 9.8) prototype pollution vulnerability (CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')) affecting Nis utils libraries in the npm ecosystem. The issue involves prototype pollution in nis-utils. Remediation is available in the latest vendor maintenance releases.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/nis-utils

1 Known Advisory Record(s)

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

Advisory ID CVE / NVD Severity Summary
GHSA-gr58-j5wh-m333 CVE-2020-7703 CRITICAL Prototype Pollution in nis-utils

CVE-2020-7703 at a Glance

CVE Identifier CVE-2020-7703
GHSA Identifier GHSA-gr58-j5wh-m333
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Affected Product Nis utils
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-2020-7703

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

nis-utils fixed: Latest secure release 
npm install nis-utils@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 nis-utils

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2020-7703, inspect your project dependencies using npm:

npm ls nis-utils

Analyze the terminal output to locate any version of Nis utils 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 nis-utils 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-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution'), where the product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype. In Nis utils, 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

All versions of package nis-utils up to and including 0.6.10 are vulnerable to Prototype Pollution via the setValue function.

CVE-2020-7703 Affected Nis utils Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
nis-utils
npm/nis-utils
npm
≤ 0.6.10

References

NVD — CVE-2020-7703 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-7703
snyk.io/vuln/snyk-js-nisuti... WEB
https://snyk.io/vuln/SNYK-JS-NISUTILS-598799

Frequently Asked Questions

What is CVE-2020-7703?
CVE-2020-7703 is a security vulnerability in Nis utils involving Prototype Pollution in nis-utils under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution').
Which Nis utils versions are affected?
Affected versions include releases prior to current release patches across affected packages: nis-utils.
What version fixes CVE-2020-7703?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is nis-utils affected?
Yes, nis-utils 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-2020-7703?
CVE-2020-7703 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-2020-7703?
CVE-2020-7703 is classified under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.).
How can I check npm dependencies for CVE-2020-7703?
Run the dependency tree command: 'npm ls nis-utils'. 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-gr58-j5wh-m333",
  "modified" : "2021-05-05T21:33:21Z",
  "published" : "2021-05-06T17:29:08Z",
  "aliases" : [ "CVE-2020-7703" ],
  "summary" : "Prototype Pollution in nis-utils",
  "details" : "All versions of package nis-utils up to and including 0.6.10 are vulnerable to Prototype Pollution via the setValue 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" : "nis-utils"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.6.10"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-7703"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-NISUTILS-598799"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1321", "CWE-915" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-05-05T21:33:21Z",
    "nvd_published_at" : "2020-08-17T15:15:00Z"
  }
}