Merge pull request from GHSA-3f39-6537-3cgc

This commit implements HTTP header and body validation to fix
[SIF-2023-002](https://advisory.silicon.moe/advisory/sif-2023-002/)

Signed-off-by: perillamint <perillamint@silicon.moe>
Co-authored-by: perillamint <perillamint@silicon.moe>
Co-authored-by: yunochi <yuno@yunochi.com>
This commit is contained in:
syuilo 2023-11-14 17:09:45 +09:00 committed by GitHub
parent 30bb24d18c
commit 65c5626b65
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
4 changed files with 79 additions and 6 deletions

View file

@ -59,7 +59,6 @@
"dependencies": {
"@aws-sdk/client-s3": "3.412.0",
"@aws-sdk/lib-storage": "3.412.0",
"@smithy/node-http-handler": "2.1.5",
"@bull-board/api": "5.9.1",
"@bull-board/fastify": "5.9.1",
"@bull-board/ui": "5.9.1",
@ -78,6 +77,7 @@
"@peertube/http-signature": "1.7.0",
"@simplewebauthn/server": "8.3.5",
"@sinonjs/fake-timers": "11.2.2",
"@smithy/node-http-handler": "2.1.5",
"@swc/cli": "0.1.62",
"@swc/core": "1.3.96",
"accepts": "1.3.8",
@ -99,6 +99,7 @@
"date-fns": "2.30.0",
"deep-email-validator": "0.1.21",
"fastify": "4.24.3",
"fastify-raw-body": "^4.2.2",
"feed": "4.2.2",
"file-type": "18.7.0",
"fluent-ffmpeg": "2.1.2",

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@ -3,6 +3,7 @@
* SPDX-License-Identifier: AGPL-3.0-only
*/
import * as crypto from 'node:crypto';
import { IncomingMessage } from 'node:http';
import { Inject, Injectable } from '@nestjs/common';
import fastifyAccepts from '@fastify/accepts';
@ -108,7 +109,58 @@ export class ActivityPubServerService {
return;
}
// TODO: request.bodyのバリデーション
if (signature.params.headers.indexOf('host') === -1
|| request.headers.host !== this.config.host) {
// Host not specified or not match.
reply.code(401);
return;
}
if (signature.params.headers.indexOf('digest') === -1) {
// Digest not found.
reply.code(401);
} else {
const digest = request.headers.digest;
if (typeof digest !== 'string') {
// Huh?
reply.code(401);
return;
}
const re = /^([a-zA-Z0-9\-]+)=(.+)$/;
const match = digest.match(re);
if (match == null) {
// Invalid digest
reply.code(401);
return;
}
const algo = match[1];
const digestValue = match[2];
if (algo !== 'SHA-256') {
// Unsupported digest algorithm
reply.code(401);
return;
}
if (request.rawBody == null) {
// Bad request
reply.code(400);
return;
}
const hash = crypto.createHash('sha256').update(request.rawBody).digest('base64');
if (hash !== digestValue) {
// Invalid digest
reply.code(401);
return;
}
}
this.queueService.inbox(request.body as IActivity, signature);
reply.code(202);
@ -474,8 +526,8 @@ export class ActivityPubServerService {
//#region Routing
// inbox (limit: 64kb)
fastify.post('/inbox', { bodyLimit: 1024 * 64 }, async (request, reply) => await this.inbox(request, reply));
fastify.post('/users/:user/inbox', { bodyLimit: 1024 * 64 }, async (request, reply) => await this.inbox(request, reply));
fastify.post('/inbox', { config: { rawBody: true }, bodyLimit: 1024 * 64 }, async (request, reply) => await this.inbox(request, reply));
fastify.post('/users/:user/inbox', { config: { rawBody: true }, bodyLimit: 1024 * 64 }, async (request, reply) => await this.inbox(request, reply));
// note
fastify.get<{ Params: { note: string; } }>('/notes/:note', { constraints: { apOrHtml: 'ap' } }, async (request, reply) => {

View file

@ -9,6 +9,7 @@ import { fileURLToPath } from 'node:url';
import { Inject, Injectable, OnApplicationShutdown } from '@nestjs/common';
import Fastify, { FastifyInstance } from 'fastify';
import fastifyStatic from '@fastify/static';
import fastifyRawBody from 'fastify-raw-body';
import { IsNull } from 'typeorm';
import { GlobalEventService } from '@/core/GlobalEventService.js';
import type { Config } from '@/config.js';
@ -86,6 +87,13 @@ export class ServerService implements OnApplicationShutdown {
});
}
// Register raw-body parser for ActivityPub HTTP signature validation.
fastify.register(fastifyRawBody, {
global: false,
encoding: 'utf-8',
runFirst: true,
});
// Register non-serving static server so that the child services can use reply.sendFile.
// `root` here is just a placeholder and each call must use its own `rootPath`.
fastify.register(fastifyStatic, {

View file

@ -1,4 +1,4 @@
lockfileVersion: '6.0'
lockfileVersion: '6.1'
settings:
autoInstallPeers: true
@ -182,6 +182,9 @@ importers:
fastify:
specifier: 4.24.3
version: 4.24.3
fastify-raw-body:
specifier: ^4.2.2
version: 4.2.2
feed:
specifier: 4.2.2
version: 4.2.2
@ -7001,7 +7004,7 @@ packages:
hasBin: true
peerDependencies:
'@swc/core': ^1.2.66
chokidar: 3.5.3
chokidar: ^3.5.1
peerDependenciesMeta:
chokidar:
optional: true
@ -11727,6 +11730,15 @@ packages:
resolution: {integrity: sha512-79ak0JxddO0utAXAQ5ccKhvs6vX2MGyHHMMsmZkBANrq3hXc1CHzvNPHOcvTsVMEPl5I+NT+RO4YKMGehOfSIg==}
dev: false
/fastify-raw-body@4.2.2:
resolution: {integrity: sha512-6l4fXtxNn7WOQiylu5fv9/JfUTvWCg1ED4gF44hqnVesgttOXEUMnNkdV8ZxwufCstRyUYaYSBIN4VuRHDbJkw==}
engines: {node: '>= 10'}
dependencies:
fastify-plugin: 4.5.0
raw-body: 2.5.2
secure-json-parse: 2.7.0
dev: false
/fastify@4.24.3:
resolution: {integrity: sha512-6HHJ+R2x2LS3y1PqxnwEIjOTZxFl+8h4kSC/TuDPXtA+v2JnV9yEtOsNSKK1RMD7sIR2y1ZsA4BEFaid/cK5pg==}
dependencies: