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Sandbox Breakout / Arbitrary Code Execution in safer-eval

Critical severity GitHub Reviewed Published Dec 6, 2019 in commenthol/safer-eval • Updated Feb 1, 2023

Package

npm safer-eval (npm)

Affected versions

<= 1.3.6

Patched versions

None

Description

All versions of safer-eval are vulnerable to Sandbox Escape leading to Remote Code Execution. The package fails to restrict access to the main context and is not suited to process arbitrary user input. This may allow attackers to execute arbitrary code in the system.

Recommendation

The package is not meant to receive user input. Consider using an alternative package until a fix is made available.

References

@commenthol commenthol published to commenthol/safer-eval Dec 6, 2019
Published by the National Vulnerability Database Dec 6, 2019
Published to the GitHub Advisory Database Dec 11, 2019
Reviewed Jun 16, 2020
Last updated Feb 1, 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

0.856%
(83rd percentile)

Weaknesses

CVE ID

CVE-2019-10769

GHSA ID

GHSA-v63x-xc9j-hhvq

Source code

No known source code
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