CVE-2023-30606

Multisite denial of service through unsanitized dynamic dispatch to SiteSetting in Discourse

State: Published
Severity: 4.2 Medium
Published: Apr 18, 2023
Updated: Feb 6, 2025
Reserved: Apr 13, 2023

Description

Discourse is an open source platform for community discussion. In affected versions a user logged as an administrator can call arbitrary methods on the `SiteSetting` class, notably `#clear_cache!` and `#notify_changed!`, which when done on a multisite instance, can affect the entire cluster resulting in a denial of service. Users not running in multisite environments are not affected. This issue is patched in the latest stable, beta and tests-passed versions of Discourse. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Scores

CVSS	Score	Vector	Source
3.1	4.2 Medium	CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H	GitHub_M

Weaknesses

CWE-732 Incorrect Permission Assignment for Critical Resource

Affected Products

Product	Versions
discoursediscourse	stable: < 3.0.2Affected beta: < 3.1.0.beta3Affected

References

https://github.com/discourse/discourse/security/advisories/GHSA-jj93-w3mv-3jvv

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