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CVE-2022-46175 Detail

Description

JSON5 is an extension to the popular JSON file format that aims to be easier to write and maintain by hand (e.g. for config files). The `parse` method of the JSON5 library before and including versions 1.0.1 and 2.2.1 does not restrict parsing of keys named `__proto__`, allowing specially crafted strings to pollute the prototype of the resulting object. This vulnerability pollutes the prototype of the object returned by `JSON5.parse` and not the global Object prototype, which is the commonly understood definition of Prototype Pollution. However, polluting the prototype of a single object can have significant security impact for an application if the object is later used in trusted operations. This vulnerability could allow an attacker to set arbitrary and unexpected keys on the object returned from `JSON5.parse`. The actual impact will depend on how applications utilize the returned object and how they filter unwanted keys, but could include denial of service, cross-site scripting, elevation of privilege, and in extreme cases, remote code execution. `JSON5.parse` should restrict parsing of `__proto__` keys when parsing JSON strings to objects. As a point of reference, the `JSON.parse` method included in JavaScript ignores `__proto__` keys. Simply changing `JSON5.parse` to `JSON.parse` in the examples above mitigates this vulnerability. This vulnerability is patched in json5 versions 1.0.2, 2.2.2, and later.


Metrics

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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/json5/json5/issues/199 Issue Tracking  Patch  Third Party Advisory 
https://github.com/json5/json5/issues/199 Issue Tracking  Patch  Third Party Advisory 
https://github.com/json5/json5/issues/295 Issue Tracking  Third Party Advisory 
https://github.com/json5/json5/issues/295 Issue Tracking  Third Party Advisory 
https://github.com/json5/json5/pull/298 Patch  Third Party Advisory 
https://github.com/json5/json5/pull/298 Patch  Third Party Advisory 
https://github.com/json5/json5/security/advisories/GHSA-9c47-m6qq-7p4h Exploit  Third Party Advisory 
https://github.com/json5/json5/security/advisories/GHSA-9c47-m6qq-7p4h Exploit  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2023/11/msg00021.html
https://lists.debian.org/debian-lts-announce/2023/11/msg00021.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3S26TLPLVFAJTUN3VIXFDEBEXDYO22CE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3S26TLPLVFAJTUN3VIXFDEBEXDYO22CE/

Weakness Enumeration

CWE-ID CWE Name Source
CWE-1321 Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') GitHub, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

9 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2022-46175
NVD Published Date:
12/23/2022
NVD Last Modified:
11/21/2024
Source:
GitHub, Inc.