CVE-2021-21413

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.

CVSS v3.0 9.6 CRITICAL
CVSS v2.0 5.8 MEDIUM

9.6^/10

CVSS v3.0 : CRITICAL

Vector :

Exploitability : 2.8 / Impact : 6.0

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

5.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:A/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 6.5 / Impact : 6.4

Access Vector ADJACENT_NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/laverdet/isolated-vm/commit/2646e6c1558bac66285daeab54c7d490ed332b15	Patch Third Party Advisory
https://github.com/laverdet/isolated-vm/security/advisories/GHSA-mmhj-4w6j-76h7	Third Party Advisory
https://github.com/laverdet/isolated-vm/blob/main/CHANGELOG.md#v400	Release Notes Third Party Advisory
https://github.com/laverdet/isolated-vm/commit/27151bfecc260e96714443613880e3b2e6596704	Patch Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:isolated-vm_project:isolated-vm:*:*:*:*:*:node.js:*:*

Information

Published : 2021-03-30 16:15

Updated : 2021-04-07 07:56

NVD link : CVE-2021-21413

Mitre link : CVE-2021-21413

JSON object : View

CWE

CWE-913

Improper Control of Dynamically-Managed Code Resources

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Products Affected

isolated-vm_project

isolated-vm

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