CVE-2023-4105— Attachment of deleted message in a thread remains accessible and downloadable
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，该漏洞源于删除主题中的消息时，附件并未被删除，从而使得普通用户仍然可以访问和下载已删除消息的附件。
Possible ATT&CK Techniques 1 AI
T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2023-4105
Vulnerability Information
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Vulnerability Title
Attachment of deleted message in a thread remains accessible and downloadable
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost fails to delete the attachments when deleting a message in a thread allowing a simple user to still be able to access and download the attachment of a deleted message
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
授权机制缺失
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，该漏洞源于删除主题中的消息时，附件并未被删除，从而使得普通用户仍然可以访问和下载已删除消息的附件。
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 ~ 7.8.7 | - |
|
II. Public POCs for CVE-2023-4105
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Mattermost · 2023-08-11 · 4 CVEs total
| CVE-2023-4107 | 6.7 MEDIUM | Incorrect authorization allows a user manager to update a system admin |
| CVE-2023-4106 | 6.3 MEDIUM | A guest user can perform various actions on public playbooks |
| CVE-2023-4108 | 4.5 MEDIUM | Audit logging fails to sanitize post metadata |
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V. Comments for CVE-2023-4105
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