جزئیات آسیب‌پذیری

Etherpad is a real-time collaborative editor. From 2.1.0 until 3.1.0, Etherpad's src/node/handler/APIHandler.ts authorizes requests to /api/2/* in the authorization_code OAuth path by using requiredClaims with the admin claim. This check requires only that the claim exists, while src/node/security/OAuth2Provider.ts issues admin: false for configured non-admin users. A non-admin user with a valid signed token can therefore invoke administrative functions including setHTML, setText, appendText, deletePad, copyPad, movePad, restoreRevision, anonymizeAuthor, listAllPads, and listAuthorsOfPad, allowing disclosure, modification, or deletion of pads across the instance. This issue is fixed in version 3.1.0.

• https://github.com/ether/etherpad/pull/7784 x_refsource_MISC
• https://github.com/ether/etherpad/commit/8c6104c5d5daf41f0d454acc04d42dffa0e0d996 x_refsource_MISC
• https://github.com/ether/etherpad/releases/tag/v3.1.0 x_refsource_MISC
• https://github.com/ether/etherpad/security/advisories/GHSA-qfmh-fph3-mw8q x_refsource_CONFIRM