Discourse Setting resource consumption

Summaryinfo

A vulnerability described as problematic has been identified in Discourse up to beta 3.4.0.beta3/stable 3.3.2/tests-passed 3.4.0.beta3. Impacted is an unknown function of the component Setting Handler. The manipulation results in resource consumption. This vulnerability is cataloged as CVE-2024-53851. The attack may be launched remotely. There is no exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Discourse up to beta 3.4.0.beta3/stable 3.3.2/tests-passed 3.4.0.beta3. It has been classified as problematic. Affected is an unknown code block of the component Setting Handler. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability. CVE summarizes:

Discourse is an open source platform for community discussion. In affected versions the endpoint for generating inline oneboxes for URLs wasn't enforcing limits on the number of URLs that it accepted, allowing a malicious user to inflict denial of service on some parts of the app. This vulnerability is only exploitable by authenticated users. This issue has been patched in the latest stable, beta and tests-passed versions of Discourse. Users are advised to upgrade. Users unable to upgrade should turn off the `enable inline onebox on all domains` site setting and remove all entries from the `allowed inline onebox domains` site setting.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2024-53851 since 11/22/2024. The exploitability is told to be easy. It is possible to launch the attack remotely. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

Applying the patch 416ec83ae57924d721e6e374f4cda78bd77a4599 is able to eliminate this problem. The bugfix is ready for download at github.com.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Chat Software

Name

• Discourse

Version

• beta 3.4.0.beta1
• beta 3.4.0.beta2
• beta 3.4.0.beta3
• stable 3.3.0
• stable 3.3.1
• stable 3.3.2
• tests-passed 3.4.0.beta1
• tests-passed 3.4.0.beta2
• tests-passed 3.4.0.beta3

License

• open-source

Website

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

CPE 2.3info

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CPE 2.2info

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