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CVE-2024-39836— Munged email address used for password resets and notifications

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.x版本至9.10.0版本和9.8.x版本至9.8.2版本存在安全漏洞，该漏洞源于未能确保远程/合成用户无法创建会话或重置密码，这可能允许通过共享频道生成的有效电子邮件地址用于接收电子邮件通知和重置密码。

CVSS 4.8 · Medium EPSS 0.26% · P16
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I. Basic Information for CVE-2024-39836

Vulnerability Information
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Vulnerability Title
Munged email address used for password resets and notifications
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost versions 9.9.x <= 9.9.1, 9.5.x <= 9.5.7, 9.10.x <= 9.10.0 and 9.8.x <= 9.8.2 fail to ensure that remote/synthetic users cannot create sessions or reset passwords, which allows the munged email addresses, created by shared channels, to be used to receive email notifications and to reset passwords, when they are valid, functional emails.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
保护机制失效
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.x版本至9.10.0版本和9.8.x版本至9.8.2版本存在安全漏洞，该漏洞源于未能确保远程/合成用户无法创建会话或重置密码，这可能允许通过共享频道生成的有效电子邮件地址用于接收电子邮件通知和重置密码。
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-2024-39836

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III. Intelligence Information for CVE-2024-39836

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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-2024-8071 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-2024-43780 4.3 MEDIUM Unauthorized channel file upload
CVE-2024-40884 2.7 LOW Unauthorized disabling of invite URL

IV. Related Vulnerabilities

Same product: Mattermost
Same vendor: Mattermost
Same weakness: CWE-693

V. Comments for CVE-2024-39836

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