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CVE-2024-1887— Public channel post content accessible without membership when compliance export is enabled

Quick assessment

Affected
Mattermost Mattermost
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存在安全漏洞，该漏洞源于在获取公共频道的帖子时无法检查是否启用了合规性导出，允许非公共频道成员的用户获取帖子。

CVSS 4.3 · Medium EPSS 0.33% · P24

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2024-1887

Vulnerability Information
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Vulnerability Title
Public channel post content accessible without membership when compliance export is enabled
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost fails to check if compliance export is enabled when fetching posts of public channels allowing a user that is not a member of the public channel to fetch the posts, which will not be audited in the compliance export. 
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Mattermost 安全漏洞
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存在安全漏洞，该漏洞源于在获取公共频道的帖子时无法检查是否启用了合规性导出，允许非公共频道成员的用户获取帖子。
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 0 ~ 8.1.8 -

II. Public POCs for CVE-2024-1887

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III. Intelligence Information for CVE-2024-1887

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Same Patch Batch · Mattermost · 2024-02-29 · 9 CVEs total

CVE-2024-23493 4.3 MEDIUM Team associated AD/LDAP Groups Leaked due to missing authorization
CVE-2024-24988 4.3 MEDIUM Excessive resource consumption when sending long emoji names in user custom status
CVE-2024-1888 4.3 MEDIUM Existing server guests invited to the team by members without "invite_guest" permission
CVE-2024-1942 4.3 MEDIUM Mattermost 安全漏洞
CVE-2024-1953 4.3 MEDIUM Mattermost 安全漏洞
CVE-2024-23488 3.1 LOW Files of archived channels accessible with the “Allow users to view archived channels” opt
CVE-2024-1952 3.1 LOW Mattermost 安全漏洞
CVE-2024-1949 2.6 LOW Mattermost 安全漏洞

IV. Related Vulnerabilities

Same product: Mattermost
Same vendor: Mattermost
Same weakness: CWE-284

V. Comments for CVE-2024-1887

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