This affects the package immer before 9.0.6. A type confusion vulnerability can lead to a bypass of CVE-2020-28477 when the user-provided keys used in the path parameter are arrays. In particular, this bypass is possible because the condition (p === "__proto__" || p === "constructor") in applyPatches_ returns false if p is ['__proto__'] (or ['constructor']). The === operator (strict equality operator) returns false if the operands have different type.
:heavy_check_mark: This issue was automatically closed by Mend because the vulnerable library in the specific branch(es) was either marked as ignored or it is no longer part of the Mend inventory.
CVE-2021-23436 - High Severity Vulnerability
Vulnerable Library - immer-8.0.1.tgz
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Library home page: https://registry.npmjs.org/immer/-/immer-8.0.1.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/immer/package.json
Dependency Hierarchy: - @graphql-tools/website-6.2.3.tgz (Root Library) - core-2.0.0-beta.ff31de0ff.tgz - react-dev-utils-11.0.4.tgz - :x: **immer-8.0.1.tgz** (Vulnerable Library)
Found in HEAD commit: 522129ce265decf86028571eea566ef21c50fd7f
Found in base branch: gh-pages
Vulnerability Details
This affects the package immer before 9.0.6. A type confusion vulnerability can lead to a bypass of CVE-2020-28477 when the user-provided keys used in the path parameter are arrays. In particular, this bypass is possible because the condition (p === "__proto__" || p === "constructor") in applyPatches_ returns false if p is ['__proto__'] (or ['constructor']). The === operator (strict equality operator) returns false if the operands have different type.
Publish Date: 2021-09-01
URL: CVE-2021-23436
CVSS 3 Score Details (9.8)
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: High - Integrity Impact: High - Availability Impact: High
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23436
Release Date: 2021-09-01
Fix Resolution: immer - 9.0.6
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