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CVE-2023-38498— Discourse vulnerable to DoS via defer queue

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，该漏洞源于恶意用户可以阻止延迟队列在同一多站点安装中托管的站点上迅速进行。

CVSS 4.3 · Medium EPSS 0.70% · P52

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2023-38498

Vulnerability Information
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Vulnerability Title
Discourse vulnerable to DoS via defer queue
Source: CVE Program / CVE List V5
Vulnerability Description
Discourse is an open source discussion platform. Prior to version 3.0.6 of the `stable` branch and version 3.1.0.beta7 of the `beta` and `tests-passed` branches, a malicious user can prevent the defer queue from proceeding promptly on sites hosted in the same multisite installation. The issue is patched in version 3.0.6 of the `stable` branch and version 3.1.0.beta7 of the `beta` and `tests-passed` branches. There are no known workarounds for this vulnerability. Users of multisite configurations should upgrade.
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: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，该漏洞源于恶意用户可以阻止延迟队列在同一多站点安装中托管的站点上迅速进行。
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 >= 3.1.0.beta1, < 3.1.0.beta7 -

II. Public POCs for CVE-2023-38498

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III. Intelligence Information for CVE-2023-38498

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Patches & Fixes for CVE-2023-38498 (1)

Same Patch Batch · discourse · 2023-07-28 · 6 CVEs total

CVE-2023-37467 6.8 MEDIUM Discourse CSP nonce reuse vulnerability for anonymous users
CVE-2023-38684 5.3 MEDIUM Discourse vulnerable to ossible DDoS due to unbounded limits in various controller actions
CVE-2023-38685 4.3 MEDIUM Discourse's restricted tag information visible to unauthenticated users
CVE-2023-37906 4.3 MEDIUM Discourse vulnerable to DoS via post edit reason
CVE-2023-37904 2.6 LOW Discourse Race Condition in Accept Invite

IV. Related Vulnerabilities

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

V. Comments for CVE-2023-38498

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