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CVE-2021-37867— Emails of all users are exposed via one of the Boards APIs

Quick assessment

Affected
Mattermost Mattermost Boards
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.

Mattermost是美国Mattermost公司的一个开源协作平台。 Mattermost Boards 插件 v0.10.0 及更早版本存在安全漏洞，该漏洞允许经过身份验证和未经授权的用户访问此信息，从而导致敏感和私人信息泄露。

CVSS 4.3 · Medium EPSS 0.67% · P50

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2021-37867

Vulnerability Information
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Vulnerability Title
Emails of all users are exposed via one of the Boards APIs
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost Boards plugin v0.10.0 and earlier fails to protect email addresses of all users via one of the Boards APIs, which allows authenticated and unauthorized users to access this information resulting in sensitive & private information disclosure.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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
Mattermost 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mattermost是美国Mattermost公司的一个开源协作平台。 Mattermost Boards 插件 v0.10.0 及更早版本存在安全漏洞，该漏洞允许经过身份验证和未经授权的用户访问此信息，从而导致敏感和私人信息泄露。
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
Mattermost Mattermost Boards unspecified ~ 0.10.0 -

II. Public POCs for CVE-2021-37867

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III. Intelligence Information for CVE-2021-37867

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Other References for CVE-2021-37867 (1)

Same Patch Batch · Mattermost · 2022-01-18 · 4 CVEs total

CVE-2021-37866 4.7 MEDIUM Session is not invalidated on server-side when user logged out of Boards
CVE-2021-37865 4.3 MEDIUM Server-side Denial of Service while processing a specifically crafted GIF file
CVE-2021-37864 2.6 LOW Users can view the contents of an archived channel when access is explicitly denied by the

IV. Related Vulnerabilities

Same product: Mattermost Boards
Same vendor: Mattermost
Same weakness: CWE-200

V. Comments for CVE-2021-37867

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