CVE-2023-5196— DoS via Channel Notification Properties
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存在资源管理错误漏洞。攻击者利用该漏洞导致服务器消耗异常数量的计算资源。
Possible ATT&CK Techniques 1 AI
T1496 · Resource Hijacking
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I. Basic Information for CVE-2023-5196
Vulnerability Information
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Vulnerability Title
DoS via Channel Notification Properties
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost fails to enforce character limits in all possible notification props allowing an attacker to send a really long value for a notification_prop resulting in the server consuming an abnormal quantity of computing resources and possibly becoming temporarily unavailable for its users.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
Mattermost 资源管理错误漏洞
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存在资源管理错误漏洞。攻击者利用该漏洞导致服务器消耗异常数量的计算资源。
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 ~ 7.8.9 | - |
|
II. Public POCs for CVE-2023-5196
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Mattermost · 2023-09-29 · 5 CVEs total
| CVE-2023-5195 | 6.5 MEDIUM | A team member can soft delete other teams that they are not part of |
| CVE-2023-5193 | 4.9 MEDIUM | System Role with manage posts permission can read posts of Direct Messages |
| CVE-2023-5159 | 3.8 LOW | A User Manager role with user edit permissions could manage/update bots |
| CVE-2023-5194 | 2.7 LOW | A system/user manager can demote / deactivate another manager |
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V. Comments for CVE-2023-5196
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