yargs/yargs-parser · Security
yargs-parser Vulnerable to Prototype Pollution
- GHSA ID
- GHSA-p9pc-299p-vxgp
- CVE ID
- CVE-2020-7608
- Severity
- medium
- Published
- Updated
- CVSS
- 5.3 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
- CVSS v3
- 5.3 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Description
Affected versions of yargs-parser 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 --foo.__proto__.bar baz' adds a bar property with value baz to all objects. This is only exploitable if attackers have control over the arguments being passed to yargs-parser.
Recommendation
Upgrade to versions 13.1.2, 15.0.1, 18.1.1 or later.
CWEs
- CWE-915 · Improperly Controlled Modification of Dynamically-Determined Object Attributes
- CWE-1321 · Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
References
- https://snyk.io/vuln/SNYK-JS-YARGSPARSER-560381 ↗
- https://www.npmjs.com/advisories/1500 ↗
- https://github.com/yargs/yargs-parser/commit/63810ca1ae1a24b08293a4d971e70e058c7a41e2 ↗
- https://nvd.nist.gov/vuln/detail/CVE-2020-7608 ↗
- https://github.com/yargs/yargs-parser/commit/1c417bd0b42b09c475ee881e36d292af4fa2cc36 ↗
- https://github.com/advisories/GHSA-p9pc-299p-vxgp ↗