Privilege Escalation Affecting isolated-vm package, versions <4.0.0
Snyk CVSS
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Test your applications- Snyk ID SNYK-JS-ISOLATEDVM-1243750
- published 7 Apr 2021
- disclosed 6 Apr 2021
- credit Abdullah Hamdan, Cristian-Alexandru STAICU
Introduced: 6 Apr 2021
CVE-2021-21413 Open this link in a new tabHow to fix?
Upgrade isolated-vm to version 4.0.0 or higher.
Overview
isolated-vm is an Access to multiple isolates
Affected versions of this package are vulnerable to Privilege Escalation. Misuse of Reference and other transferable APIs may lead to access to nodejs isolate.
Affected versions have API pitfalls which make it possible 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.