CVE-2024-24827

No rate limits on POST /uploads endpoint in Discourse

State
Published
Severity
5.3 Medium
Published
Mar 15, 2024
Updated
Apr 10, 2025
Reserved
Jan 31, 2024

Read the record on cve.org

Description

Discourse is an open source platform for community discussion. Without a rate limit on the POST /uploads endpoint, it makes it easier for an attacker to carry out a DoS attack on the server since creating an upload can be a resource intensive process. Do note that the impact varies from site to site as various site settings like `max_image_size_kb`, `max_attachment_size_kb` and `max_image_megapixels` will determine the amount of resources used when creating an upload. The issue is patched in the latest stable, beta and tests-passed version of Discourse. Users are advised to upgrade. Users unable to upgrade should reduce `max_image_size_kb`, `max_attachment_size_kb` and `max_image_megapixels` as smaller uploads require less resources to process. Alternatively, `client_max_body_size` can be reduced in Nginx to prevent large uploads from reaching the server.

Scores

CVSSScoreVectorSource
3.15.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LGitHub_M

Weaknesses

  • CWE-400 Uncontrolled Resource Consumption

Affected Products

ProductVersions
discoursediscourse
  • stable <= 3.2.0Affected
  • beta < 3.3.0.beta1Affected
  • tests-passed < 3.3.0.beta1Affected

References

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