CVE-2022-46175 – json5 <= 1.0.1 and 2.0.0-2.2.1 - Prototype Pollution

https://notcve.org/view.php?id=CVE-2022-46175

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`. • https://github.com/json5/json5/issues/199 https://github.com/json5/json5/issues/295 https://github.com/json5/json5/pull/298 https://github.com/json5/json5/security/advisories/GHSA-9c47-m6qq-7p4h 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://access.redhat.com/security/cve/CVE-2022-46175 https://bugzilla.redhat.com/show_bug.cgi?id=2156263 • CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') •