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CVE-2023-35075— HTML injection via channel autocomplete

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Web应用在自动完成期间设置频道名称时无法使用innerText/textContent，从而允许攻击者通过创建有效HTML的频道名称将HTML注入受害者的页面。

CVSS 3.1 · Low EPSS 0.37% · P29

Possible ATT&CK Techniques 1 AI

T1059.007 · JavaScript
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I. Basic Information for CVE-2023-35075

Vulnerability Information
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Vulnerability Title
HTML injection via channel autocomplete
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost fails to use  innerText / textContent when setting the channel name in the webapp during autocomplete, allowing an attacker to inject HTML to a victim's page by create a channel name that is valid HTML. No XSS is possible though. 
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
输出中的特殊元素转义处理不恰当(注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Mattermost 注入漏洞
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Web应用在自动完成期间设置频道名称时无法使用innerText/textContent，从而允许攻击者通过创建有效HTML的频道名称将HTML注入受害者的页面。
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 ~ 8.1.3 -

II. Public POCs for CVE-2023-35075

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III. Intelligence Information for CVE-2023-35075

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Same Patch Batch · Mattermost · 2023-11-27 · 9 CVEs total

CVE-2023-47168 4.3 MEDIUM Open redirect in /oauth/<service>/mobile_login?redirect_to=
CVE-2023-6202 4.3 MEDIUM Insecure Direct Object Reference in /plugins/focalboard/ api/v2/users of Mattermost Boards
CVE-2023-43754 4.3 MEDIUM Permalink previews displayed for posts in archived channels even if users are disallowed t
CVE-2023-48369 4.3 MEDIUM Log Flooding due to specially crafted requests in different endpoints
CVE-2023-40703 4.3 MEDIUM Denial of Service via specially crafted block fields in Mattermost Boards
CVE-2023-48268 4.3 MEDIUM Denial of Service via Board Import Zip Bomb
CVE-2023-45223 4.3 MEDIUM Users full name disclosure through Mattermost Boards with Show Full Name Option disabled
CVE-2023-47865 4.3 MEDIUM Username and Icon override can be used by members when Hardened Mode is enabled

IV. Related Vulnerabilities

Same product: Mattermost
Same vendor: Mattermost
Same weakness: CWE-74

V. Comments for CVE-2023-35075

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