CVE-2022-35923

Inefficient Regular Expression Complexity in npm/v8n

Identifiers

CVE-2022-35923, GHSA-xrx9-gj26-5wx9

Package Slug

npm/v8n

Vulnerability

Inefficient Regular Expression Complexity

Description

v8n is a javascript validation library. Versions of v8n prior to 1.5.1 were found to have an inefficient regular expression complexity in the lowercase() and uppercase() regex which could lead to a denial of service attack. In testing of the lowercase() function a payload of 'a' + 'a'.repeat(i) + 'A' with 32 leading characters took 29443 ms to execute. The same issue happens with uppercase(). Users are advised to upgrade. There are no known workarounds for this issue.

Affected Versions

All versions before 1.5.1

Solution

Upgrade to version 1.5.1 or above.

Last Modified

2022-08-09

source