Discourse up to 3.0.5/3.1.0.beta6 allocation of resources

Summaryinfo

A vulnerability was found in Discourse up to 3.0.5/3.1.0.beta6. It has been declared as problematic. Affected is an unknown function. Executing a manipulation can lead to allocation of resources. This vulnerability is handled as CVE-2023-38684. The attack can be executed remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Discourse up to 3.0.5/3.1.0.beta6 and classified as problematic. This vulnerability affects some unknown processing. The manipulation with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. As an impact it is known to affect availability. CVE summarizes:

Discourse is an open source discussion platform. Prior to version 3.0.6 of the `stable` branch and version 3.1.0.beta7 of the `beta` and `tests-passed` branches, in multiple controller actions, Discourse accepts limit params but does not impose any upper bound on the values being accepted. Without an upper bound, the software may allow arbitrary users to generate DB queries which may end up exhausting the resources on the server. The issue is patched in version 3.0.6 of the `stable` branch and version 3.1.0.beta7 of the `beta` and `tests-passed` branches. There are no known workarounds for this vulnerability.

The weakness was released 07/28/2023 as GHSA-ff7g-xv79-hgmf. The advisory is shared for download at github.com. This vulnerability was named CVE-2023-38684 since 07/24/2023. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 3.0.6 or 3.1.0.beta7 eliminates this vulnerability. Applying the patch bfc3132bb22bd5b7e86f428746b89c4d3d7f5a70 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Type

• Chat Software

Name

• Discourse

Version

• 3.0.0
• 3.0.1
• 3.0.2
• 3.0.3
• 3.0.4
• 3.0.5
• 3.1.0.beta1
• 3.1.0.beta2
• 3.1.0.beta3
• 3.1.0.beta4
• 3.1.0.beta5
• 3.1.0.beta6

License

• open-source

Website

• Product: https://github.com/discourse/discourse/

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