CVE-2023-46241

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.

CVSS v3.1 Score

9.0

CRITICAL

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Weakness Type (CWE)

CWE-863 Incorrect Authorization

Affected Products

Vendor	Product	Versions
discourse	microsoft_authentication	< 2024-02-20

References

Advisories & Patches

https://github.com/discourse/discourse-microsoft-auth/commit/c40665f44509724b64938c85def9fb2e79f62ec8 https://github.com/discourse/discourse-microsoft-auth/security/advisories/GHSA-2w32-w539-3m7r https://github.com/discourse/discourse-microsoft-auth/commit/c40665f44509724b64938c85def9fb2e79f62ec8 https://github.com/discourse/discourse-microsoft-auth/security/advisories/GHSA-2w32-w539-3m7r

Other References

https://learn.microsoft.com/en-us/security/zero-trust/develop/identity-supported-account-types https://learn.microsoft.com/en-us/security/zero-trust/develop/identity-supported-account-types

Frequently Asked Questions

What is CVE-2023-46241? +

`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. It has a CVSS v3.1 base score of 9.0 (CRITICAL).

How severe is CVE-2023-46241? +

CVE-2023-46241 has a CVSS v3.1 score of 9.0 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2023-46241? +

CVE-2023-46241 affects products from discourse, specifically: microsoft_authentication. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-46241? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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