GitHub Advisoryadvisory · npm
GHSA-vh95-rmgr-6w4m Prototype Pollution in minimist
MEDIUM
Official page ↗
- Aliases
- CVE-2020-7598
- Ecosystem
- npm
- Packages
- minimist
- Severity
- Moderate
- CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
- Weaknesses
- CWE-1321
- Reviewed
- 2020-04-03
Affected packages
• npm minimist: < 0.2.1 → fixed in 0.2.1
• npm minimist: >= 1.0.0, < 1.2.3 → fixed in 1.2.3
Description
Affected versions of `minimist` are vulnerable to prototype pollution. Arguments are not properly sanitized, allowing an attacker to modify the prototype of `Object`, causing the addition or modification of an existing property that will exist on all objects.
Parsing the argument `--__proto__.y=Polluted` adds a `y` property with value `Polluted` to all objects. The argument `--__proto__=Polluted` raises and uncaught error and crashes the application.
This is exploitable if attackers have control over the arguments being passed to `minimist`.
Recommendation
Upgrade to versions 0.2.1, 1.2.3 or later.
Related
Alias · CVE (1)
- CVE-2020-7598 minimist before 1.2.2 could be tricked into adding or modifying properties of Object.prototype using a "constructor" or "__proto__" payload. vulnerability
Weakness · CWE (1)
- CWE-1321 Improperly Controlled Modification of Object Prototype Attributes weakness
References
- https://nvd.nist.gov/vuln/detail/CVE-2020-7598 advisory
- https://github.com/minimistjs/minimist/commit/10bd4cdf49d9686d48214be9d579a9cdfda37c68 web
- https://github.com/minimistjs/minimist/commit/38a4d1caead72ef99e824bb420a2528eec03d9ab web
- https://github.com/minimistjs/minimist/commit/4cf1354839cb972e38496d35e12f806eea92c11f#diff-a1e0ee62c91705696ddb71aa30ad4f95 web
- https://github.com/minimistjs/minimist/commit/63e7ed05aa4b1889ec2f3b196426db4500cbda94 web
- https://github.com/substack/minimist package
- https://snyk.io/vuln/SNYK-JS-MINIMIST-559764 web
- https://www.npmjs.com/advisories/1179 web
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00024.html web