CVE-2023-46241 Potential account take over due to unverified emails from Microsoft Identity Platform
Attackers can take over Discourse accounts via unverified emails when Microsoft authentication is configured for multi-tenant environments.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-46241?
CVE-2023-46241 is a critical authentication bypass vulnerability in discourse-microsoft-auth, published on 21 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
`discourse-microsoft-auth` is a plugin that enables authentication via Microsoft. 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. This vulnerability has been patched in commit c40665f44509724b64938c85def9fb2e79f62ec8 of `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. As a workaround, 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.
Weakness: CWE-863
Which versions are affected by CVE-2023-46241?
It affects 1 product.
Products include Discourse Microsoft Authentication.
How do I fix CVE-2023-46241?
No fix has been published for CVE-2023-46241 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2023-46241 being exploited?
There is no known exploitation of CVE-2023-46241 in the wild and no public exploit code.
Sources
Also known as GHSA-2w32-w539-3m7r.