CVE-2024-24827

No rate limits on POST /uploads endpoint in Discourse

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

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.

Discourse es una plataforma de código abierto para el debate comunitario. Sin un límite de velocidad en el endpoint POST /uploads, a un atacante le resulta más fácil llevar a cabo un ataque DoS en el servidor, ya que crear una carga puede ser un proceso que consume muchos recursos. Tenga en cuenta que el impacto varía de un sitio a otro, ya que varias configuraciones del sitio, como `max_image_size_kb`, `max_attachment_size_kb` y `max_image_megapixels`, determinarán la cantidad de recursos utilizados al crear una carga. El problema está solucionado en la última versión estable, beta y probada de Discourse. Se recomienda a los usuarios que actualicen. Los usuarios que no puedan actualizar deben reducir `max_image_size_kb`, `max_attachment_size_kb` y `max_image_megapixels` ya que las cargas más pequeñas requieren menos recursos para procesar. Alternativamente, `client_max_body_size` se puede reducir en Nginx para evitar que grandes cargas lleguen al servidor.

*Credits: N/A

CVSS Scores

GitHubv3.1 5.3

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-01-31 CVE Reserved
2024-03-15 CVE Published
2024-03-16 EPSS Updated
2024-08-01 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-400: Uncontrolled Resource Consumption

CAPEC

References (2)

URL	Tag	Source
https://github.com/discourse/discourse/commit/003b80e62f97cd8c0114d6b9d3f93c10443e6fae	X_refsource_misc
https://github.com/discourse/discourse/security/advisories/GHSA-58vw-246g-fjj4	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Discourse Search vendor "Discourse"		Discourse Search vendor "Discourse" for product "Discourse"				<= 3.2.0 Search vendor "Discourse" for product "Discourse" and version " <= 3.2.0"		en		Affected