CVE-2022-21676: Engine.io Uncaught Exception Vulnerability
HIGHCVE-2022-21676 is a HIGH (CVSS 7.5) uncaught exception vulnerability (CWE-755: Improper Handling of Exceptional Conditions) affecting Engine.io libraries in the npm ecosystem. The issue involves uncaught exception in engine.io. Remediation is available by upgrading affected packages to version 4.1.2, 5.2.1, 6.1.1.
CVE-2022-21676 at a Glance
Security Impact
CVSS: 7.5
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
How to Fix CVE-2022-21676
To remediate this vulnerability, upgrade all affected Engine.io dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
npm install engine.io@4.1.2
npm install engine.io@5.2.1
npm install engine.io@6.1.1
Run the following command in your project directory to verify that all resolved dependencies use the patched release:
npm ls engine.io
How to Check if You Are Affected
To determine whether your Node.js application is affected by CVE-2022-21676, inspect your project dependencies using npm:
npm ls engine.io
Analyze the terminal output to locate any version of Engine.io in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.1.2), your application is affected.
Note: The npm ls engine.io command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-755: Improper Handling of Exceptional Conditions, where the product does not handle or incorrectly handles an exceptional condition. In Engine.io, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2022-21676 Affected Engine.io Versions
3 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
engine.io
|
npm |
≥ 4.0.0
< 4.1.2
|
4.1.2
|
|
engine.io
|
npm |
≥ 5.0.0
< 5.2.1
|
5.2.1
|
|
engine.io
|
npm |
≥ 6.0.0
< 6.1.1
|
6.1.1
|
References
Frequently Asked Questions
What is CVE-2022-21676?
Which Engine.io versions are affected?
What version fixes CVE-2022-21676?
Is engine.io affected?
What is the CVSS score of CVE-2022-21676?
What CWE is associated with CVE-2022-21676?
How can I check npm dependencies for CVE-2022-21676?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-273r-mgr4-v34f",
"modified" : "2022-01-21T13:25:59Z",
"published" : "2022-01-13T16:14:17Z",
"aliases" : [ "CVE-2022-21676" ],
"summary" : "Uncaught Exception in engine.io",
"details" : "### Impact\n\nA specially crafted HTTP request can trigger an uncaught exception on the Engine.IO server, thus killing the Node.js process.\n\n> RangeError: Invalid WebSocket frame: RSV2 and RSV3 must be clear\n> at Receiver.getInfo (/.../node_modules/ws/lib/receiver.js:176:14)\n> at Receiver.startLoop (/.../node_modules/ws/lib/receiver.js:136:22)\n> at Receiver._write (/.../node_modules/ws/lib/receiver.js:83:10)\n> at writeOrBuffer (internal/streams/writable.js:358:12)\n\nThis impacts all the users of the [`engine.io`](https://www.npmjs.com/package/engine.io) package starting from version `4.0.0`, including those who uses depending packages like [`socket.io`](https://www.npmjs.com/package/socket.io).\n\n### Patches\n\nA fix has been released for each major branch:\n\n| Version range | Fixed version |\n| --- | --- |\n| `engine.io@4.x.x` | `4.1.2` |\n| `engine.io@5.x.x` | `5.2.1` |\n| `engine.io@6.x.x` | `6.1.1` |\n\nPrevious versions (`< 4.0.0`) are not impacted.\n\nFor `socket.io` users:\n\n| Version range | `engine.io` version | Needs minor update? |\n| --- | --- | --- |\n| `socket.io@4.4.x` | `~6.1.0` | -\n| `socket.io@4.3.x` | `~6.0.0` | Please upgrade to `socket.io@4.4.x`\n| `socket.io@4.2.x` | `~5.2.0` | -\n| `socket.io@4.1.x` | `~5.1.1` | Please upgrade to `socket.io@4.4.x`\n| `socket.io@4.0.x` | `~5.0.0` | Please upgrade to `socket.io@4.4.x`\n| `socket.io@3.1.x` | `~4.1.0` | -\n| `socket.io@3.0.x` | `~4.0.0` | Please upgrade to `socket.io@3.1.x` or `socket.io@4.4.x` (see [here](https://socket.io/docs/v4/migrating-from-3-x-to-4-0/))\n\nIn most cases, running `npm audit fix` should be sufficient. You can also use `npm update engine.io --depth=9999`.\n\n### Workarounds\n\nThere is no known workaround except upgrading to a safe version.\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n* Open an issue in [`engine.io`](https://github.com/socketio/engine.io)\n\nThanks to Marcus Wejderot from Mevisio for the responsible disclosure.\n",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "npm",
"name" : "engine.io"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "4.0.0"
}, {
"fixed" : "4.1.2"
} ]
} ]
}, {
"package" : {
"ecosystem" : "npm",
"name" : "engine.io"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "5.0.0"
}, {
"fixed" : "5.2.1"
} ]
} ]
}, {
"package" : {
"ecosystem" : "npm",
"name" : "engine.io"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "6.0.0"
}, {
"fixed" : "6.1.1"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/socketio/engine.io/security/advisories/GHSA-273r-mgr4-v34f"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-21676"
}, {
"type" : "WEB",
"url" : "https://github.com/socketio/engine.io/commit/66f889fc1d966bf5bfa0de1939069153643874ab"
}, {
"type" : "WEB",
"url" : "https://github.com/socketio/engine.io/commit/a70800d7e96da32f6e6622804ef659ebc58659db"
}, {
"type" : "WEB",
"url" : "https://github.com/socketio/engine.io/commit/c0e194d44933bd83bf9a4b126fca68ba7bf5098c"
}, {
"type" : "WEB",
"url" : "https://github.com/socketio/engine.io"
}, {
"type" : "WEB",
"url" : "https://github.com/socketio/engine.io/releases/tag/4.1.2"
}, {
"type" : "WEB",
"url" : "https://github.com/socketio/engine.io/releases/tag/5.2.1"
}, {
"type" : "WEB",
"url" : "https://github.com/socketio/engine.io/releases/tag/6.1.1"
}, {
"type" : "WEB",
"url" : "https://security.netapp.com/advisory/ntap-20220209-0002"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-754", "CWE-755" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2022-01-12T19:26:23Z",
"nvd_published_at" : "2022-01-12T19:15:00Z"
}
}