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CVE-2022-36066— Discourse vulnerable to RCE via admins uploading maliciously zipped file

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.stable之前版本和2.9.0.beta10之前版本存在代码问题漏洞，该漏洞源于管理员可以上传恶意制作的Zip或Gzip Tar存档，在任意位置写入文件并触发远程代码执行。

CVSS 9.1 · Critical EPSS 1.63% · P74
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I. Basic Information for CVE-2022-36066

Vulnerability Information
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Vulnerability Title
Discourse vulnerable to RCE via admins uploading maliciously zipped file
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, admins can upload a maliciously crafted Zip or Gzip Tar archive to write files at arbitrary locations and trigger remote code execution. The problem is patched 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:H/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
危险类型文件的不加限制上传
Source: CVE Program / CVE List V5
Vulnerability Title
Discourse 代码问题漏洞
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 2.8.9.stable之前版本和2.9.0.beta10之前版本存在代码问题漏洞，该漏洞源于管理员可以上传恶意制作的Zip或Gzip Tar存档，在任意位置写入文件并触发远程代码执行。
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 < 2.8.9 -

II. Public POCs for CVE-2022-36066

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III. Intelligence Information for CVE-2022-36066

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Patches & Fixes for CVE-2022-36066 (2)

Vendor Advisories for CVE-2022-36066 (1)

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

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
CVE-2022-39226 4.3 MEDIUM Discourse user profile location and website fields were not sufficiently length-limited

IV. Related Vulnerabilities

Same product: discourse
Same vendor: discourse
Same weakness: CWE-434

V. Comments for CVE-2022-36066

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