CVE-2022-21684
Versions prior to 2.7.13 in `stable`, 2.8.0.beta11 in `beta`, and 2.8.0.beta11 in `tests-passed` allow some users to log in to a community before they should be able to do so.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.83%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Discourse is an open source discussion platform. Versions prior to 2.7.13 in `stable`, 2.8.0.beta11 in `beta`, and 2.8.0.beta11 in `tests-passed` allow some users to log in to a community before they should be able to do so. A user invited via email to a forum with `must_approve_users` enabled is going to be automatically logged in, bypassing the check that does not allow unapproved users to sign in. They will be able to do everything an approved user can do. If they logout, they cannot log back in. This issue is patched in the `stable` version 2.7.13, `beta` version 2.8.0.beta11, and `tests-passed` version 2.8.0.beta11. One may disable invites as a workaround. Administrators can increase `min_trust_level_to_allow_invite` to reduce the attack surface to more trusted users.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.83% probability · 56th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-287
- Affected
- discourse/discourse
- Source
- security-advisories@github.com
References
- https://github.com/discourse/discourse/commit/584c6a2e8bc705072b09a9c4b55126d6f8ed4ad2Patch, Third Party Advisory
- https://github.com/discourse/discourse/security/advisories/GHSA-p63q-jp48-h8xhPatch, Third Party Advisory
- https://meta.discourse.org/t/invite-redemption-allowed-user-to-access-forum-before-approval/214328Issue Tracking, Patch, Vendor Advisory
- https://github.com/discourse/discourse/commit/584c6a2e8bc705072b09a9c4b55126d6f8ed4ad2Patch, Third Party Advisory
- https://github.com/discourse/discourse/security/advisories/GHSA-p63q-jp48-h8xhPatch, Third Party Advisory
- https://meta.discourse.org/t/invite-redemption-allowed-user-to-access-forum-before-approval/214328Issue Tracking, Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.