Discourse: DoS via Mass Post Reply Fetch
CVE-2024-43789 Published on October 7, 2024
Denial of service by the absence of restrictions on replies to posts in Discourse
Discourse is an open source platform for community discussion. A user can create a post with many replies, and then attempt to fetch them all at once. This can potentially reduce the availability of a Discourse instance. This problem has been patched in the latest version of Discourse. All users area are advised to upgrade. There are no known workarounds for this vulnerability.
Vulnerability Analysis
CVE-2024-43789 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is a Resource Exhaustion Vulnerability?
The software 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.
CVE-2024-43789 has been classified to as a Resource Exhaustion vulnerability or weakness.
Products Associated with CVE-2024-43789
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Affected Versions
discourse:- Version stable: < 3.3.1 is affected.
- Version beta: < 3.4.0.beta1 is affected.
- Version stable and below 3.3.1 is affected.
- Version beta and below 3.4.0.beta1 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.