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vm2 Sandbox Escape vulnerability

Critical severity GitHub Reviewed Published Apr 11, 2023 in patriksimek/vm2 • Updated Nov 29, 2023

Package

npm vm2 (npm)

Affected versions

< 3.9.16

Patched versions

3.9.16

Description

There exists a vulnerability in source code transformer (exception sanitization logic) of vm2 for versions up to 3.9.15, allowing attackers to bypass handleException() and leak unsanitized host exceptions which can be used to escape the sandbox and run arbitrary code in host context.

Impact

A threat actor can bypass the sandbox protections to gain remote code execution rights on the host running the sandbox.

Patches

This vulnerability was patched in the release of version 3.9.16 of vm2.

Workarounds

None.

References

Github Issue - patriksimek/vm2#516
PoC - https://gist.github.com/leesh3288/f05730165799bf56d70391f3d9ea187c

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 Apr 11, 2023
Published to the GitHub Advisory Database Apr 12, 2023
Reviewed Apr 12, 2023
Published by the National Vulnerability Database Apr 14, 2023
Last updated Nov 29, 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

2.834%
(90th percentile)

Weaknesses

CVE ID

CVE-2023-29199

GHSA ID

GHSA-xj72-wvfv-8985

Source code

Credits

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