Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS12dnY4LXh3NWYtM2Y4OM4AArtg

Prototype Pollution in mout

This affects all versions of package mout. The deepFillIn function can be used to 'fill missing properties recursively', while the deepMixIn mixes objects into the target object, recursively mixing existing child objects as well. In both cases, the key used to access the target object recursively is not checked, leading to exploiting this vulnerability. Note: This vulnerability derives from an incomplete fix of CVE-2020-7792.

Permalink: https://github.com/advisories/GHSA-vvv8-xw5f-3f88
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS12dnY4LXh3NWYtM2Y4OM4AArtg
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: almost 2 years ago
Updated: over 1 year ago

CVSS Score: 7.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Identifiers: GHSA-vvv8-xw5f-3f88, CVE-2022-21213
References:

• https://nvd.nist.gov/vuln/detail/CVE-2022-21213
• https://github.com/mout/mout/blob/master/src/object/deepFillIn.js
• https://github.com/mout/mout/blob/master/src/object/deepMixIn.js
• https://snyk.io/vuln/SNYK-JS-MOUT-2342654
• https://github.com/mout/mout/pull/279
• https://github.com/mout/mout/commit/17ffdc2a96417a63a0147156dc045e90d0d14c64
• https://github.com/advisories/GHSA-vvv8-xw5f-3f88

Repository: https://github.com/mout/mout
Blast Radius: 34.9

Affected Packages