Impact
On sites with the discourse-microsoft-auth plugin enabled, an attack can potentially take control of a victim's Discourse account. Sites that have configured their application's account type to any options other than Accounts in this organizational directory only (O365 only - Single tenant) are vulnerable.
Patches
This vulnerability has been patched in the latest version of the discourse-microsoft-auth. A microsoft_auth:revoke rake task has also been added which will deactivate and log out all users that have connected their accounts to Microsoft. User API keys as well as API keys created by those users will also be revoked. The rake task will also remove the connection records to Microsoft for those users. This will allow affected users to re-verify their account emails as well as reconnect their Discourse account to Microsoft for authentication.
Workarounds
Disable the discourse-microsoft-auth plugin by setting the microsoft_auth_enabled site setting to false. Run the microsoft_auth:log_out_users rake task to log out all users with associated Microsoft accounts.
Luqiih Reporter
Impact
On sites with the
discourse-microsoft-authplugin enabled, an attack can potentially take control of a victim's Discourse account. Sites that have configured their application's account type to any options other thanAccounts in this organizational directory only (O365 only - Single tenant)are vulnerable.Patches
This vulnerability has been patched in the latest version of the
discourse-microsoft-auth. Amicrosoft_auth:revokerake task has also been added which will deactivate and log out all users that have connected their accounts to Microsoft. User API keys as well as API keys created by those users will also be revoked. The rake task will also remove the connection records to Microsoft for those users. This will allow affected users to re-verify their account emails as well as reconnect their Discourse account to Microsoft for authentication.Workarounds
Disable the
discourse-microsoft-authplugin by setting themicrosoft_auth_enabledsite setting tofalse. Run themicrosoft_auth:log_out_usersrake task to log out all users with associated Microsoft accounts.