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CVE-2023-6727— Leak Inaccessible Playbook Information via Channel Action IDOR

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，该漏洞源于在创建 playbook 操作时无法执行正确的授权检查，从而允许无法访问 playbook 的用户创建 playbook 操作，如果创建的 playbook 是根据帖子中的特定关键字在频道中发布消息，则某些 playbook 信息可能会泄露。

CVSS 3.1 · Low EPSS 0.41% · P34
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I. Basic Information for CVE-2023-6727

Vulnerability Information
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Vulnerability Title
Leak Inaccessible Playbook Information via Channel Action IDOR
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost fails to perform correct authorization checks when creating a playbook action, allowing users without access to the playbook to create playbook actions. If the playbook action created is to post a message in a channel based on specific keywords in a post, some playbook information, like the name, can be leaked. 
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Mattermost 其他漏洞
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，该漏洞源于在创建 playbook 操作时无法执行正确的授权检查，从而允许无法访问 playbook 的用户创建 playbook 操作，如果创建的 playbook 是根据帖子中的特定关键字在频道中发布消息，则某些 playbook 信息可能会泄露。
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 ~ 8.1.5 -

II. Public POCs for CVE-2023-6727

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III. Intelligence Information for CVE-2023-6727

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Same Patch Batch · Mattermost · 2023-12-12 · 8 CVEs total

CVE-2023-45316 7.3 HIGH Reflected client side path traversal leading to CSRF in Playbooks
CVE-2023-46701 6.5 MEDIUM Inaccessible Post Information Leak via Run Timeline IDOR
CVE-2023-45847 4.3 MEDIUM Playbook Plugin Crash via Run Checklist
CVE-2023-49874 4.3 MEDIUM IDOR when updating the tasks of a private playbook run
CVE-2023-49809 4.3 MEDIUM Todo plugin gets crashed and disabled by member
CVE-2023-49607 4.3 MEDIUM Playbook plugin crash via missing interface type assertion
CVE-2023-6547 3.7 LOW Playbooks access/modification by removed team member

IV. Related Vulnerabilities

Same product: Mattermost
Same vendor: Mattermost
Same weakness: CWE-200

V. Comments for CVE-2023-6727

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