Vulnerability CVE-2023-36665
Published: 2023-07-05

Description:
protobuf.js (aka protobufjs) 6.10.0 through 7.x before 7.2.4 allows Prototype Pollution, a different vulnerability than CVE-2022-25878. A user-controlled protobuf message can be used by an attacker to pollute the prototype of Object.prototype by adding and overwriting its data and functions. Exploitation can involve: (1) using the function parse to parse protobuf messages on the fly, (2) loading .proto files by using load/loadSync functions, or (3) providing untrusted input to the functions ReflectionObject.setParsedOption and util.setProperty. NOTE: this CVE Record is about "Object.constructor.prototype.<new-property> = ...;" whereas CVE-2022-25878 was about "Object.__proto__.<new-property> = ...;" instead.

 References:
https://github.com/protobufjs/protobuf.js/commit/e66379f451b0393c27d87b37fa7d271619e16b0d
https://github.com/protobufjs/protobuf.js/compare/protobufjs-v7.2.3...protobufjs-v7.2.4
https://github.com/protobufjs/protobuf.js/pull/1899
https://www.code-intelligence.com/blog/cve-protobufjs-prototype-pollution-cve-2023-36665
https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v7.2.4
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