CVE-2021-21267 Information

Description

Schema-Inspector is an open-source tool to sanitize and validate JS objects (npm package schema-inspector). In before version 2.0.0 email address validation is vulnerable to a denial-of-service attack where some input (for example a@0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.) will freeze the program or web browser page executing the code. This affects any current schema-inspector users using any version to validate email addresses. Users who do not do email validation and instead do other types of validation (like string min or max length etc) are not affected. Users should upgrade to version 2.0.0 which uses a regex expression that isn’t vulnerable to ReDoS.

CVSS Vector

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

Reference

https://gist.github.com/mattwelke/b7f42424680a57b8161794ad1737cd8f https://www.npmjs.com/package/schema-inspector https://github.com/schema-inspector/schema-inspector/security/advisories/GHSA-f38p-c2gq-4pmr https://security.netapp.com/advisory/ntap-20210528-0006/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5