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CVE-2023-37904— Discourse Race Condition in Accept Invite

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 存在竞争条件问题漏洞，该漏洞源于可以通过邀请链接创建超出允许数量的用户。

CVSS 2.6 · Low EPSS 0.27% · P18

Possible ATT&CK Techniques 1 AI

T1199 · Trusted Relationship
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I. Basic Information for CVE-2023-37904

Vulnerability Information
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Vulnerability Title
Discourse Race Condition in Accept Invite
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, more users than permitted could be created from invite links. 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. As a workaround, use restrict to email address invites.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
Source: CVE Program / CVE List V5
Vulnerability Title
Discourse 竞争条件问题漏洞
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 存在竞争条件问题漏洞，该漏洞源于可以通过邀请链接创建超出允许数量的用户。
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-2023-37904

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III. Intelligence Information for CVE-2023-37904

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Patches & Fixes for CVE-2023-37904 (1)

Vendor Advisories for CVE-2023-37904 (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-2023-38498 4.3 MEDIUM Discourse vulnerable to DoS via defer queue
CVE-2023-37906 4.3 MEDIUM Discourse vulnerable to DoS via post edit reason

IV. Related Vulnerabilities

Same product: discourse
Same vendor: discourse
Same weakness: CWE-362

V. Comments for CVE-2023-37904

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