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fix(server): validate filename and emoji name to improve security

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0d7256678e

Co-authored-by: Johann150 <johann.galle@protonmail.com>
Changelog: Fixed
This commit is contained in:
syuilo 2023-02-05 14:25:37 +09:00 committed by Johann150
parent c1ae134c0a
commit af272ce358
Signed by untrusted user: Johann150
GPG key ID: 9EE6577A2A06F8F1
2 changed files with 8 additions and 0 deletions
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4
packages/backend/src/queue/processors/db/export-custom-emojis.ts
View file

@ -58,6 +58,10 @@ export async function exportCustomEmojis(job: Bull.Job, done: () => void): Promi
});
for (const emoji of customEmojis) {
if (!/^[a-zA-Z0-9_]+$/.test(emoji.name)) {
this.logger.error(`invalid emoji name: ${emoji.name}, skipping in emoji export`);
continue;
}
const ext = mime.extension(emoji.type);
const fileName = emoji.name + (ext ? '.' + ext : '');
const emojiPath = path + '/' + fileName;

4
packages/backend/src/queue/processors/db/import-custom-emojis.ts
View file

@ -50,6 +50,10 @@ export async function importCustomEmojis(job: Bull.Job<DbUserImportJobData>, don
for (const record of meta.emojis) {
if (!record.downloaded) continue;
if (!/^[a-zA-Z0-9_]+?([a-zA-Z0-9\.]+)?$/.test(record.fileName)) {
this.logger.error(`invalid filename: ${record.fileName}, skipping in emoji import`);
continue;
}
const emojiInfo = record.emoji;
const emojiPath = outputPath + '/' + record.fileName;
await Emojis.delete({