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CVE-2021-37703— Information exposure in Discourse

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 中存在信息泄露漏洞，该漏洞源于未对主题添加有效配置。攻击者可通过该漏洞查看系统敏感信息。以下产品及版本受到影响：Discourse 2.7.8 之前版本及 2.8.0.beta5 之前版本。

CVSS 4.3 · Medium EPSS 0.84% · P56

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System
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I. Basic Information for CVE-2021-37703

Vulnerability Information
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Vulnerability Title
Information exposure in Discourse
Source: CVE Program / CVE List V5
Vulnerability Description
Discourse is an open-source platform for community discussion. In Discourse before versions 2.7.8 and 2.8.0.beta5, a user's read state for a topic such as the last read post number and the notification level is exposed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Discourse 信息泄露漏洞
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 中存在信息泄露漏洞，该漏洞源于未对主题添加有效配置。攻击者可通过该漏洞查看系统敏感信息。以下产品及版本受到影响：Discourse 2.7.8 之前版本及 2.8.0.beta5 之前版本。
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 < 2.7.8 -

II. Public POCs for CVE-2021-37703

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III. Intelligence Information for CVE-2021-37703

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Patches & Fixes for CVE-2021-37703 (1)

Vendor Advisories for CVE-2021-37703 (1)

IV. Related Vulnerabilities

Same product: discourse
Same vendor: discourse
Same weakness: CWE-200

V. Comments for CVE-2021-37703

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