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assign-deep Vulnerable to Prototype Pollution

High severity GitHub Reviewed Published Aug 21, 2019 to the GitHub Advisory Database • Updated Jan 27, 2023

Package

npm assign-deep (npm)

Affected versions

< 0.4.8
= 1.0.0

Patched versions

0.4.8
1.0.1

Description

Versions of assign-deep prior to 1.0.1 and 0.4.8 are vulnerable to Prototype Pollution. The assign function fails to validate which Object properties it updates. This allows attackers to modify the prototype of Object, causing the addition or modification of an existing property on all objects.

Recommendation

Upgrade to versions 1.0.1, 0.4.8, or later.

References

Published by the National Vulnerability Database Aug 20, 2019
Reviewed Aug 21, 2019
Published to the GitHub Advisory Database Aug 21, 2019
Last updated Jan 27, 2023

Severity

High

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
None
Integrity
High
Availability
None

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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS score

0.102%
(43rd percentile)

Weaknesses

CVE ID

CVE-2019-10745

GHSA ID

GHSA-66rh-8fw6-59q6

Source code

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