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CVE-2024-24827— No rate limits on POST /uploads endpoint in Discourse

Quick assessment

Affected
discourse discourse
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Discourse是一套开源的社区讨论平台。该平台包括社区、电子邮件和聊天室等功能。 Discourse存在安全漏洞，该漏洞源于POST /uploads 端点没有速率限制。攻击者利用该漏洞对服务器进行拒绝服务攻击。

CVSS 5.3 · Medium EPSS 0.59% · P48
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I. Basic Information for CVE-2024-24827

Vulnerability Information
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Vulnerability Title
No rate limits on POST /uploads endpoint in Discourse
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
Discourse 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Discourse是一套开源的社区讨论平台。该平台包括社区、电子邮件和聊天室等功能。 Discourse存在安全漏洞，该漏洞源于POST /uploads 端点没有速率限制。攻击者利用该漏洞对服务器进行拒绝服务攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
discourse discourse stable <= 3.2.0 -

II. Public POCs for CVE-2024-24827

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III. Intelligence Information for CVE-2024-24827

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Patches & Fixes for CVE-2024-24827 (1)

Vendor Advisories for CVE-2024-24827 (1)

Same Patch Batch · discourse · 2024-03-15 · 5 CVEs total

CVE-2024-27100 6.5 MEDIUM Denial of service via Staff Actions in Discourse
CVE-2024-27085 6.5 MEDIUM Denial of service through invites in Discourse
CVE-2024-24748 5.3 MEDIUM Disclosure of the existence of secret subcategories in Discourse
CVE-2024-28242 5.3 MEDIUM Disclosure of the existence of secret categories with custom backgrounds in Discourse

IV. Related Vulnerabilities

Same product: discourse
Same vendor: discourse
Same weakness: CWE-400