Vulnerability · Published Apr 18, 2023 · Assigned by GitHub_M

CVE-2023-30606Multisite denial of service through unsanitized dynamic dispatch to SiteSetting in Discourse

Medium 4.2

In plain English

A medium-severity incorrect permission assignment in discourse from discourse. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).

Severity (CVSS 3.1)4.2Medium

Exploit odds (30 days)0.4%top 66.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
discourse	discourse	stable: < 3.0.2beta: < 3.1.0.beta3

Weakness: CWE-732 · Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H

References

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