CVE-2023-1777— Information disclosure in linked message previews
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存在信息泄露漏洞，该漏洞源于允许攻击者在通过 createPost API 调用创建新消息时请求预览现有消息，从而泄露链接消息的内容。
Possible ATT&CK Techniques 1 AI
T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2023-1777
Vulnerability Information
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Vulnerability Title
Information disclosure in linked message previews
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost allows an attacker to request a preview of an existing message when creating a new message via the createPost API call, disclosing the contents of the linked message.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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 信息泄露漏洞
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存在信息泄露漏洞，该漏洞源于允许攻击者在通过 createPost API 调用创建新消息时请求预览现有消息，从而泄露链接消息的内容。
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 | 6.3.0 ~ 7.7.1 | - |
|
II. Public POCs for CVE-2023-1777
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2023-1777 (1)
Same Patch Batch · Mattermost · 2023-03-31 · 4 CVEs total
| CVE-2023-1776 | 7.3 HIGH | Stored XSS via SVG attachment on Boards |
| CVE-2023-1775 | 4.3 MEDIUM | Unsanitized events sent over Websocket to regular users in a High Availability environment |
| CVE-2023-1774 | 4.2 MEDIUM | Unauthorized email invite to a private channel |
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V. Comments for CVE-2023-1777
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