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CVE-2023-3615— Lack of server certificate validation in websockets connection

Quick assessment

Affected
Mattermost Mattermost iOS app
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 iOS存在安全漏洞，该漏洞源于在初始化TLS连接时无法正确验证服务器证书，从而允许攻击者拦截WebSockets连接。

CVSS 8.1 · High EPSS 0.35% · P28

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle
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I. Basic Information for CVE-2023-3615

Vulnerability Information
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Vulnerability Title
Lack of server certificate validation in websockets connection
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost iOS app fails to properly validate the server certificate while initializing the TLS connection allowing a network attacker to intercept the WebSockets connection.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Mattermost 信任管理问题漏洞
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 iOS存在安全漏洞，该漏洞源于在初始化TLS连接时无法正确验证服务器证书，从而允许攻击者拦截WebSockets连接。
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 iOS app 0 ~ 2.5.0 -

II. Public POCs for CVE-2023-3615

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III. Intelligence Information for CVE-2023-3615

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Same Patch Batch · Mattermost · 2023-07-17 · 13 CVEs total

CVE-2023-3581 6.2 MEDIUM WebSockets accept connections from HTTPS origin
CVE-2023-3591 4.8 MEDIUM Lack of previous password reset tokens on new token creation
CVE-2023-3582 4.3 MEDIUM Lack of channel membership check when linking a board to a channel
CVE-2023-3585 4.3 MEDIUM channel DoS by sharing a boards link
CVE-2023-3614 4.3 MEDIUM Denial of Service via specially crafted gif image
CVE-2023-3593 4.3 MEDIUM Server crash via a specially crafted markdown input
CVE-2023-3586 4.2 MEDIUM Disabling publicly-shared boards does not disable existing publicly available board links
CVE-2023-3577 3.5 LOW Limited blind SSRF to localhost/intranet in interactive dialog implementation
CVE-2023-3613 3.5 LOW Guest accounts invited and added to channels by Welcomebot plugin
CVE-2023-3584 3.1 LOW Member can create team with team override scheme
CVE-2023-3590 3.1 LOW Deleted attachments in Boards remain accessible
CVE-2023-3587 2.7 LOW Inconsistent state in UI after boards permission change by system admin

IV. Related Vulnerabilities

Same vendor: Mattermost
Same weakness: CWE-295

V. Comments for CVE-2023-3615

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