CVE-2022-21677 Information

Description

Discourse is an open source discussion platform. Discourse groups can be configured with varying visibility levels for the group as well as the group members. By default a newly created group has its visibility set to public and the group’s members visibility set to public as well. However a group’s visibility and the group’s members visibility can be configured such that it is restricted to logged on users members of the group or staff users. A vulnerability has been discovered in versions prior to 2.7.13 and 2.8.0.beta11 where the group advanced search option does not respect the group’s visibility and members visibility level. As such a group with restricted visibility or members visibility can be revealed through search with the right search option. This issue is patched in stable version 2.7.13 beta version 2.8.0.beta11 and tests-passed version 2.8.0.beta11 versions of Discourse. There are no workarounds aside from upgrading.

CVSS Vector

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

Reference

https://github.com/discourse/discourse/commit/fff8b98485561b12d070c0a8c39f4e503813ab44 https://github.com/discourse/discourse/security/advisories/GHSA-768r-ppv4-5r27

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

NONE

Base Severity

5.3