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vm2 Sandbox Escape vulnerability

Critical severity GitHub Reviewed Published Jul 12, 2023 in patriksimek/vm2 • Updated Nov 9, 2023

Package

npm vm2 (npm)

Affected versions

<= 3.9.19

Patched versions

None

Description

In vm2 for versions up to 3.9.19, Node.js custom inspect function allows attackers to escape the sandbox and run arbitrary code.

Impact

Remote Code Execution, assuming the attacker has arbitrary code execution primitive inside the context of vm2 sandbox.

Patches

None.

Workarounds

None.

References

PoC is to be disclosed on or after the 5th of September.

Similarity with CVE-2023-37466

While this advisory might look similar to CVE-2023-37466, it is a completely different way of escaping the sandbox.

For more information

If you have any questions or comments about this advisory:

  • Open an issue in VM2

Thanks to Xion (SeungHyun Lee) of KAIST Hacking Lab for disclosing this vulnerability.

References

@patriksimek patriksimek published to patriksimek/vm2 Jul 12, 2023
Published to the GitHub Advisory Database Jul 13, 2023
Reviewed Jul 13, 2023
Published by the National Vulnerability Database Jul 21, 2023
Last updated Nov 9, 2023

Severity

Critical

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS score

0.545%
(78th percentile)

Weaknesses

CVE ID

CVE-2023-37903

GHSA ID

GHSA-g644-9gfx-q4q4

Source code

Credits

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