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CVE-2024-27100— Denial of service via Staff Actions 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，该漏洞源于用于暂停用户、静默用户和导出 CSV 文件的端点不会对其接受的参数大小实施限制。

CVSS 6.5 · Medium EPSS 0.56% · P46

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2024-27100

Vulnerability Information
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Vulnerability Title
Denial of service via Staff Actions in Discourse
Source: CVE Program / CVE List V5
Vulnerability Description
Discourse is an open source platform for community discussion. In affected versions the endpoints for suspending users, silencing users and exporting CSV files weren't enforcing limits on the sizes of the parameters that they accept. This could lead to excessive resource consumption which could render an instance inoperable. A site could be disrupted by either a malicious moderator on the same site or a malicious staff member on another site in the same multisite cluster. This issue is patched in the latest stable, beta and tests-passed versions of Discourse. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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，该漏洞源于用于暂停用户、静默用户和导出 CSV 文件的端点不会对其接受的参数大小实施限制。
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-2024-27100

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III. Intelligence Information for CVE-2024-27100

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Patches & Fixes for CVE-2024-27100 (1)

Vendor Advisories for CVE-2024-27100 (1)

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

CVE-2024-27085 6.5 MEDIUM Denial of service through invites in Discourse
CVE-2024-24827 5.3 MEDIUM No rate limits on POST /uploads endpoint 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