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Merge branch 'feture/code-injection-fix' into 'develop'

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CVE: Fixed code injection from twitter import

See merge request TransFem-org/Sharkey!390
This commit is contained in:
Amelia Yukii 2024-02-01 15:06:21 +00:00
commit 127f8556d4
1 changed files with 25 additions and 17 deletions
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36
packages/backend/src/queue/processors/ImportNotesProcessorService.ts
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@ -130,6 +130,17 @@ export class ImportNotesProcessorService {
return typeof obj[Symbol.iterator] === 'function';
}
private parseTwitterFile(str : string) : null | [{ tweet: any }] {
const removed = str.replace(new RegExp('window\\.YTD\\.tweets\\.part0 = ', 'g'), '');
try {
return JSON.parse(removed);
} catch (error) {
//The format is not what we expected. Either this file was tampered with or twitters exports changed
return null;
}
}
@bindThis
public async process(job: Bull.Job<DbNoteImportJobData>): Promise<void> {
this.logger.info(`Starting note import of ${job.data.user.id} ...`);
@ -175,23 +186,20 @@ export class ImportNotesProcessorService {
try {
this.logger.succ(`Unzipping to ${outputPath}`);
ZipReader.withDestinationPath(outputPath).viaBuffer(await fs.promises.readFile(destPath));
const fakeWindow: any = {
window: {
YTD: {
tweets: {
part0: {},
},
},
},
};
const script = new vm.Script(fs.readFileSync(outputPath + '/data/tweets.js', 'utf-8'));
const context = vm.createContext(fakeWindow);
script.runInContext(context);
const tweets = Object.keys(fakeWindow.window.YTD.tweets.part0).reduce((m, key, i, obj) => {
return m.concat(fakeWindow.window.YTD.tweets.part0[key].tweet);
const unprocessedTweetJson = this.parseTwitterFile(fs.readFileSync(outputPath + '/data/tweets.js', 'utf-8'));
//Make sure that it isnt null (because if something went wrong in parseTwitterFile it returns null)
if (unprocessedTweetJson) {
const tweets = Object.keys(unprocessedTweetJson).reduce((m, key, i, obj) => {
return m.concat(unprocessedTweetJson[i].tweet);
}, []);
const processedTweets = await this.recreateChain(['id_str'], ['in_reply_to_status_id_str'], tweets, false);
this.queueService.createImportTweetsToDbJob(job.data.user, processedTweets, null);
} else {
this.logger.warn('Failed to import twitter notes due to malformed file');
}
} finally {
cleanup();
}