CVE-2022-21684
January 13, 2022
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.
Related Resources (5)
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Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
CVSS v2
Base Score:
6
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Weakness Type (CWE)
Improper Authentication
EPSS
Base Score:
0.13
