ghsa-455w-c45v-86rg
Vulnerability from github
Published
2022-10-11 13:45
Modified
2022-10-11 13:45
Severity ?
VLAI Severity ?
Summary
fastify vulnerable to denial of service via malicious Content-Type
Details
Impact
An attacker can send an invalid Content-Type header that can cause the application to crash, leading to a possible Denial of Service attack. Only the v4.x line is affected.
(This was updated: upon a close inspection, v3.x is not affected after all).
Patches
Yes, update to > v4.8.0.
Workarounds
You can reject the malicious content types before the body parser enters in action.
js
const badNames = Object.getOwnPropertyNames({}.__proto__)
fastify.addHook('onRequest', async (req, reply) => {
for (const badName of badNames) {
if (req.headers['content-type'].indexOf(badName) > -1) {
reply.code(415)
throw new Error('Content type not supported')
}
}
})
References
See the HackerOne report #1715536
For more information
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "fastify"
},
"ranges": [
{
"events": [
{
"introduced": "4.0.0"
},
{
"fixed": "4.8.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2022-39288"
],
"database_specific": {
"cwe_ids": [
"CWE-754"
],
"github_reviewed": true,
"github_reviewed_at": "2022-10-11T13:45:14Z",
"nvd_published_at": "2022-10-10T21:15:00Z",
"severity": "HIGH"
},
"details": "### Impact\nAn attacker can send an invalid `Content-Type` header that can cause the application to crash, leading to a possible Denial of Service attack. Only the v4.x line is affected.\n\n(This was updated: upon a close inspection, v3.x is not affected after all).\n\n### Patches\nYes, update to `\u003e v4.8.0`.\n\n### Workarounds\nYou can reject the malicious content types before the body parser enters in action.\n```js\n const badNames = Object.getOwnPropertyNames({}.__proto__)\n fastify.addHook(\u0027onRequest\u0027, async (req, reply) =\u003e {\n for (const badName of badNames) {\n if (req.headers[\u0027content-type\u0027].indexOf(badName) \u003e -1) {\n reply.code(415)\n throw new Error(\u0027Content type not supported\u0027)\n }\n }\n })\n```\n\n### References\n\nSee the HackerOne report [#1715536](https://hackerone.com/bugs?report_id=1715536\u0026subject=fastify)\n\n### For more information\n[Fastify security policy](https://github.com/fastify/fastify/security/policy)\n",
"id": "GHSA-455w-c45v-86rg",
"modified": "2022-10-11T13:45:14Z",
"published": "2022-10-11T13:45:14Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/fastify/fastify/security/advisories/GHSA-455w-c45v-86rg"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-39288"
},
{
"type": "WEB",
"url": "https://github.com/fastify/fastify/commit/fbb07e8dfad74c69cd4cd2211aedab87194618e3"
},
{
"type": "PACKAGE",
"url": "https://github.com/fastify/fastify"
},
{
"type": "WEB",
"url": "https://github.com/fastify/fastify/security/policy"
},
{
"type": "WEB",
"url": "https://hackerone.com/bugs?report_id=1715536\u0026subject=fastify"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "fastify vulnerable to denial of service via malicious Content-Type"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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