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CVE-2023-28107— Discourse vulnerable to multisite DoS by spamming backups

CVSS 4.5 · Medium EPSS 0.98% · P77
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I. Basic Information for CVE-2023-28107

Vulnerability Information
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Vulnerability Title
Discourse vulnerable to multisite DoS by spamming backups
Source: NVD (National Vulnerability Database)
Vulnerability Description
Discourse is an open-source discussion platform. Prior to version 3.0.2 of the `stable` branch and version 3.1.0.beta3 of the `beta` and `tests-passed` branches, a user logged as an administrator can request backups multiple times, which will eat up all the connections to the DB. If this is done on a site using multisite, then it can affect the whole cluster. The vulnerability is patched in version 3.0.2 of the `stable` branch and version 3.1.0.beta3 of the `beta` and `tests-passed` branches. There are no known workarounds.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
不加限制或调节的资源分配
Source: NVD (National Vulnerability Database)
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。攻击者利用该漏洞以管理员身份登录可以多次请求备份，这将耗尽所有与数据库的连接。
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

VendorProductAffected VersionsCPESubscribe
discoursediscourse stable < 3.0.2 -

II. Public POCs for CVE-2023-28107

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III. Intelligence Information for CVE-2023-28107

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Same Patch Batch · discourse · 2023-03-17 · 6 CVEs total

CVE-2023-260406.5 MEDIUMDiscourse chat messages susceptible to Cross-site Scripting through chat excerpts
CVE-2023-281125.9 MEDIUMDiscourse's SSRF protection missing for some FastImage requests
CVE-2023-281115.7 MEDIUMDiscourse vulnerable to SSRF protection bypass possible with IPv4-mapped IPv6 addresses
CVE-2023-251724.4 MEDIUMDiscourse vulnerable to Cross-site Scripting - user name displayed on post
CVE-2023-236224.3 MEDIUMDiscourse: Presence of read restricted topics may be leaked if tagged with a tag that is v

IV. Related Vulnerabilities

Same product: discourse
Same vendor: discourse
Same weakness: CWE-770

V. Comments for CVE-2023-28107

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