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[dist] Update dependency socket.io-parser to 3.3.3 [SECURITY]

Open Administrator requested to merge renovate/npm-socket.io-parser-vulnerability into master

Created by: renovate[bot]

Mend Renovate

This PR contains the following updates:

Package Change
socket.io-parser 3.3.0 -> 3.3.3

GitHub Vulnerability Alerts

CVE-2020-36049

The socket.io-parser npm package before versions 3.3.2 and 3.4.1 allows attackers to cause a denial of service (memory consumption) via a large packet because a concatenation approach is used.

CVE-2022-2421

Due to improper type validation in the socket.io-parser library (which is used by the socket.io and socket.io-client packages to encode and decode Socket.IO packets), it is possible to overwrite the _placeholder object which allows an attacker to place references to functions at arbitrary places in the resulting query object.

Example:

const decoder = new Decoder();

decoder.on("decoded", (packet) => {
 console.log(packet.data); // prints [ 'hello', [Function: splice] ]
})

decoder.add('51-["hello",{"_placeholder":true,"num":"splice"}]');
decoder.add(Buffer.from("world"));

This bubbles up in the socket.io package:

io.on("connection", (socket) => {
 socket.on("hello", (val) => {
 // here, "val" could be a function instead of a buffer
 });
});

⚠ IMPORTANT NOTE ⚠

You need to make sure that the payload that you received from the client is actually a Buffer object:

io.on("connection", (socket) => {
 socket.on("hello", (val) => {
 if (!Buffer.isBuffer(val)) {
 socket.disconnect();
 return;
 }
 // ...
 });
});

If that's already the case, then you are not impacted by this issue, and there is no way an attacker could make your server crash (or escalate privileges, ...).

Example of values that could be sent by a malicious user:

  • a number that is out of bounds

Sample packet: 451-["hello",{"_placeholder":true,"num":10}]

io.on("connection", (socket) => {
 socket.on("hello", (val) => {
 // val is `undefined`
 });
});
  • a value that is not a number, like undefined

Sample packet: 451-["hello",{"_placeholder":true,"num":undefined}]

io.on("connection", (socket) => {
 socket.on("hello", (val) => {
 // val is `undefined`
 });
});
  • a string that is part of the prototype of Array, like "push"

Sample packet: 451-["hello",{"_placeholder":true,"num":"push"}]

io.on("connection", (socket) => {
 socket.on("hello", (val) => {
 // val is a reference to the "push" function
 });
});
  • a string that is part of the prototype of Object, like "hasOwnProperty"

Sample packet: 451-["hello",{"_placeholder":true,"num":"hasOwnProperty"}]

io.on("connection", (socket) => {
 socket.on("hello", (val) => {
 // val is a reference to the "hasOwnProperty" function
 });
});

This should be fixed by:

Dependency analysis for the socket.io package

socket.io version socket.io-parser version Covered?
4.5.2...latest ~4.2.0 (ref) Yes ✔
4.1.3...4.5.1 ~4.0.4 (ref) Yes ✔
3.0.5...4.1.2 ~4.0.3 (ref) Yes ✔
3.0.0...3.0.4 ~4.0.1 (ref) Yes ✔
2.3.0...2.5.0 ~3.4.0 (ref) Yes ✔

Dependency analysis for the socket.io-client package

socket.io-client version socket.io-parser version Covered?
4.5.0...latest ~4.2.0 (ref) Yes ✔
4.3.0...4.4.1 ~4.1.1 (ref) No, but the impact is very limited
3.1.0...4.2.0 ~4.0.4 (ref) Yes ✔
3.0.5 ~4.0.3 (ref) Yes ✔
3.0.0...3.0.4 ~4.0.1 (ref) Yes ✔
2.2.0...2.5.0 ~3.3.0 (ref) Yes ✔

Configuration

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