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CVE-2024-31859— Member promoted to channel admin via playbooks run linking to channel

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，该漏洞源于无法执行正确的授权检查，允许将在现有频道中运行的成员提升为管理员。

CVSS 4.3 · Medium EPSS 0.24% · P14

Possible ATT&CK Techniques 1 AI

T1078.004 · Cloud Accounts
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I. Basic Information for CVE-2024-31859

Vulnerability Information
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Vulnerability Title
Member promoted to channel admin via playbooks run linking to channel
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost versions 9.5.x <= 9.5.3, 9.6.x <= 9.6.1 and 8.1.x <= 8.1.12 fail to perform proper authorization checks which allows a member running a playbook in an existing channel to be promoted to a channel admin
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，该漏洞源于无法执行正确的授权检查，允许将在现有频道中运行的成员提升为管理员。
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 9.5.0 ~ 9.5.3 -

II. Public POCs for CVE-2024-31859

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III. Intelligence Information for CVE-2024-31859

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Same Patch Batch · Mattermost · 2024-05-26 · 9 CVEs total

CVE-2024-32045 5.9 MEDIUM Playbook run link to private channel grants channel access
CVE-2024-36255 5.7 MEDIUM Post actions can run playbook checklist task commands
CVE-2024-29215 4.3 MEDIUM Slash commands run in channel without channel membership via playbook task commands
CVE-2024-5270 4.3 MEDIUM SAML to email switch possible when email signin is disabled
CVE-2024-5272 4.3 MEDIUM Run Details leak to guest via webhook event "custom_playbooks_playbook_run_updated"
CVE-2024-34152 4.3 MEDIUM Playbook Run Metadata leak to Guest
CVE-2024-34029 4.3 MEDIUM AD/LDAP Group Members Leak
CVE-2024-36241 3.1 LOW /playbook add slash command allows viewing arbitrary post contents

IV. Related Vulnerabilities

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

V. Comments for CVE-2024-31859

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