CVE Vulnerabilities

CVE-2022-31106

Improperly Controlled Modification of Dynamically-Determined Object Attributes

Published: Jun 28, 2022 | Modified: Nov 21, 2024
CVSS 3.x
9.8
CRITICAL
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu

Underscore.deep is a collection of Underscore mixins that operate on nested objects. Versions of underscore.deep prior to version 0.5.3 are vulnerable to a prototype pollution vulnerability. An attacker can craft a malicious payload and pass it to deepFromFlat, which would pollute any future Objects created. Any users that have deepFromFlat or deepPick (due to its dependency on deepFromFlat) in their code should upgrade to version 0.5.3 as soon as possible. Users unable to upgrade may mitigate this issue by modifying deepFromFlat to prevent specific keywords which will prevent this from happening.

Weakness

The product receives input from an upstream component that specifies multiple attributes, properties, or fields that are to be initialized or updated in an object, but it does not properly control which attributes can be modified.

Affected Software

Name Vendor Start Version End Version
Underscore.deep Clever * 0.5.3 (excluding)

Extended Description

If the object contains attributes that were only intended for internal use, then their unexpected modification could lead to a vulnerability. This weakness is sometimes known by the language-specific mechanisms that make it possible, such as mass assignment, autobinding, or object injection.

Potential Mitigations

  • If available, use features of the language or framework that allow specification of allowlists of attributes or fields that are allowed to be modified. If possible, prefer allowlists over denylists.
  • For applications written with Ruby on Rails, use the attr_accessible (allowlist) or attr_protected (denylist) macros in each class that may be used in mass assignment.

References