CVE-2021-29418

netmask npm package mishandles octal input data

Description

The netmask package before 2.0.1 for Node.js mishandles certain unexpected characters in an IP address string, such as an octal digit of 9. This (in some situations) allows attackers to bypass access control that is based on IP addresses. NOTE: this issue exists because of an incomplete fix for CVE-2021-28918.

Patch Available

Fix available through Seal Security.  
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Fix without upgrading

Score

Severity

Ecosystem

JavaScript

Publish Date

March 29, 2021

Modified Date

January 14, 2025

Score Vector

Affected Versions