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CVE-2021-37866— Session is not invalidated on server-side when user logged out of Boards

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，该漏洞允许攻击者重用旧会话令牌进行授权。

CVSS 4.7 · Medium EPSS 0.72% · P52

Possible ATT&CK Techniques 1 AI

T1528 · Steal Application Access Token
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I. Basic Information for CVE-2021-37866

Vulnerability Information
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Vulnerability Title
Session is not invalidated on server-side when user logged out of Boards
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost Boards plugin v0.10.0 and earlier fails to invalidate a session on the server-side when a user logged out of Boards, which allows an attacker to reuse old session token for authorization.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的会话过期机制
Source: CVE Program / CVE List V5
Vulnerability Title
Mattermost 代码问题漏洞
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，该漏洞允许攻击者重用旧会话令牌进行授权。
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-2021-37866

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III. Intelligence Information for CVE-2021-37866

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Other References for CVE-2021-37866 (2)

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

CVE-2021-37865 4.3 MEDIUM Server-side Denial of Service while processing a specifically crafted GIF file
CVE-2021-37867 4.3 MEDIUM Emails of all users are exposed via one of the Boards APIs
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-613

V. Comments for CVE-2021-37866

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