CVE-2021-21413

Published Mar 30, 2021

Last updated 4 years ago

Overview

Description: isolated-vm is a library for nodejs which gives you access to v8's Isolate interface. Versions of isolated-vm before v4.0.0 have API pitfalls which may make it easy for implementers to expose supposed secure isolates to the permissions of the main nodejs isolate. Reference objects allow access to the underlying reference's full prototype chain. In an environment where the implementer has exposed a Reference instance to an attacker they would be able to use it to acquire a Reference to the nodejs context's Function object. Similar application-specific attacks could be possible by modifying the local prototype of other API objects. Access to NativeModule objects could allow an attacker to load and run native code from anywhere on the filesystem. If combined with, for example, a file upload API this would allow for arbitrary code execution. This is addressed in v4.0.0 through a series of related changes.
Source: security-advisories@github.com
NVD status: Analyzed

Hype score: Not currently trending

Risk scores

CVSS 3.1

Type: Primary
Base score: 9.6
Impact score: 6
Exploitability score: 2.8
Vector string: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Severity: CRITICAL

CVSS 2.0

Type: Primary
Base score: 5.8
Impact score: 6.4
Exploitability score: 6.5
Vector string: AV:A/AC:L/Au:N/C:P/I:P/A:P

Weaknesses

security-advisories@github.com: CWE-913

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:isolated-vm_project:isolated-vm:*:*:*:*:*:node.js:*:*",
            "vulnerable": true,
            "matchCriteriaId": "6050FC4E-0C96-4300-8F43-78C1C6E27A0E",
            "versionEndExcluding": "4.0.0"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

Overview

Social media

Risk scores

CVSS 3.1

CVSS 2.0

Weaknesses

Configurations

References