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CVE-2024-35227— Discourse vulnerable to DoS through Onebox

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，该漏洞源于精心设计的恶意URL会降低可用性，导致拒绝服务。

CVSS 7.5 · High EPSS 0.59% · P48

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2024-35227

Vulnerability Information
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Vulnerability Title
Discourse vulnerable to DoS through Onebox
Source: CVE Program / CVE List V5
Vulnerability Description
Discourse is an open-source discussion platform. Prior to version 3.2.3 on the `stable` branch and version 3.3.0.beta3 on the `tests-passed` branch, Oneboxing against a carefully crafted malicious URL can reduce the availability of a Discourse instance. The problem has been patched in version 3.2.3 on the `stable` branch and version 3.3.0.beta3 on the `tests-passed` branch. There are no known workarounds available for this vulnerability.
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:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
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，该漏洞源于精心设计的恶意URL会降低可用性，导致拒绝服务。
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 < 3.2.3 -

II. Public POCs for CVE-2024-35227

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III. Intelligence Information for CVE-2024-35227

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Patches & Fixes for CVE-2024-35227 (2)

Vendor Advisories for CVE-2024-35227 (1)

Same Patch Batch · discourse · 2024-07-03 · 5 CVEs total

CVE-2024-37157 6.4 MEDIUM Discourse vulnerable to Server-Side Request Forgery via FastImage
CVE-2024-36113 4.9 MEDIUM Discourse missing authorization checks for suspending admins/moderators
CVE-2024-35234 4.2 MEDIUM Discourse vulnerable to stored-dom XSS via Facebook Oneboxes
CVE-2024-36122 2.4 LOW Discourse doesn't limit reviewable user serializer payload

IV. Related Vulnerabilities

Same product: discourse
Same vendor: discourse
Same weakness: CWE-20

V. Comments for CVE-2024-35227

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