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CVE-2024-43780— Unauthorized channel file upload

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 9.9.x版本至9.9.1版本、9.5.x版本至9.5.7版本、9.10.0版本和9.8.x版本至9.8.2版本存在安全漏洞，该漏洞源于未能强制执行权限，允许具有读取权限的用户将文件上传到频道。

CVSS 4.3 · Medium EPSS 0.28% · P20

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2024-43780

Vulnerability Information
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Vulnerability Title
Unauthorized channel file upload
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost versions 9.9.x <= 9.9.1, 9.5.x <= 9.5.7, 9.10.0, 9.8.x <= 9.8.2 fail to enforce permissions which allows a guest user with read access to upload files to a channel.
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 9.9.x版本至9.9.1版本、9.5.x版本至9.5.7版本、9.10.0版本和9.8.x版本至9.8.2版本存在安全漏洞，该漏洞源于未能强制执行权限，允许具有读取权限的用户将文件上传到频道。
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 9.9.0 ~ 9.9.1 -

II. Public POCs for CVE-2024-43780

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III. Intelligence Information for CVE-2024-43780

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Same Patch Batch · Mattermost · 2024-08-22 · 10 CVEs total

CVE-2024-42497 6.0 MEDIUM Insufficient permissions checks on teams
CVE-2024-42411 5.3 MEDIUM User creation date manipulation in POST /api/v4/users
CVE-2024-39810 4.9 MEDIUM Server crash via Elasticsearch certificate file
CVE-2024-39836 4.8 MEDIUM Munged email address used for password resets and notifications
CVE-2024-8071 4.7 MEDIUM System Role with edit access to permissions can elevate themselves to system admin
CVE-2024-40886 4.6 MEDIUM One-click Client-Side Path Traversal Leading to CSRF in User Management admin page
CVE-2024-32939 4.3 MEDIUM Email addresses of remote users visible in props regardless of server settings
CVE-2024-43813 4.3 MEDIUM IDOR when marking read a user's channel
CVE-2024-40884 2.7 LOW Unauthorized disabling of invite URL

IV. Related Vulnerabilities

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

V. Comments for CVE-2024-43780

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