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CVE-2022-39226— Discourse user profile location and website fields were not sufficiently length-limited

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 2.8.9之前版本、2.9.0.beta9之前版本存在安全漏洞，攻击者利用该漏洞可以将大量文本负载添加到用户配置文件的位置和网站字段中，这会在加载该配置文件时给其他用户带来问题。

CVSS 4.3 · Medium EPSS 0.82% · P55

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2022-39226

Vulnerability Information
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Vulnerability Title
Discourse user profile location and website fields were not sufficiently length-limited
Source: CVE Program / CVE List V5
Vulnerability Description
Discourse is an open source discussion platform. In versions prior to 2.8.9 on the `stable` branch and prior to 2.9.0.beta10 on the `beta` and `tests-passed` branches, a malicious actor can add large payloads of text into the Location and Website fields of a user profile, which causes issues for other users when loading that profile. A fix to limit the length of user input for these fields is included in version 2.8.9 on the `stable` branch and version 2.9.0.beta10 on the `beta` and `tests-passed` branches. There are no known workarounds.
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
不加限制或调节的资源分配
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 2.8.9之前版本、2.9.0.beta9之前版本存在安全漏洞，攻击者利用该漏洞可以将大量文本负载添加到用户配置文件的位置和网站字段中，这会在加载该配置文件时给其他用户带来问题。
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 < 2.8.9 -

II. Public POCs for CVE-2022-39226

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III. Intelligence Information for CVE-2022-39226

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Patches & Fixes for CVE-2022-39226 (2)

Vendor Advisories for CVE-2022-39226 (1)

Same Patch Batch · discourse · 2022-09-29 · 4 CVEs total

CVE-2022-36066 9.1 CRITICAL Discourse vulnerable to RCE via admins uploading maliciously zipped file
CVE-2022-36068 7.2 HIGH Discourse moderators can edit themes via the API
CVE-2022-39232 6.5 MEDIUM Discourse vulnerable to incomplete quote causing a topic to crash in the browser

IV. Related Vulnerabilities

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

V. Comments for CVE-2022-39226

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