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CVE-2024-24988— Excessive resource consumption when sending long emoji names in user custom status

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，该漏洞源于无法正确验证自定义用户状态中表情符号值的长度，导致攻击者能够发送长字符串造成服务器拒绝服务（DOS）。受影响的产品和版本：Mattermost 9.3.1之前的9.3.0版本，9.2.5之前的9.2.0版本，8.1.9之前版本。

CVSS 4.3 · Medium EPSS 0.68% · P51
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I. Basic Information for CVE-2024-24988

Vulnerability Information
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Vulnerability Title
Excessive resource consumption when sending long emoji names in user custom status
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost fails to properly validate the length of the emoji value in the custom user status, allowing an attacker to send multiple times a very long string as an emoji value causing high resource consumption and possibly crashing the server.
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:L
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 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，该漏洞源于无法正确验证自定义用户状态中表情符号值的长度，导致攻击者能够发送长字符串造成服务器拒绝服务（DOS）。受影响的产品和版本：Mattermost 9.3.1之前的9.3.0版本，9.2.5之前的9.2.0版本，8.1.9之前版本。
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 ~ 9.2.4 -

II. Public POCs for CVE-2024-24988

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III. Intelligence Information for CVE-2024-24988

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Same Patch Batch · Mattermost · 2024-02-29 · 9 CVEs total

CVE-2024-23493 4.3 MEDIUM Team associated AD/LDAP Groups Leaked due to missing authorization
CVE-2024-1887 4.3 MEDIUM Public channel post content accessible without membership when compliance export is enable
CVE-2024-1888 4.3 MEDIUM Existing server guests invited to the team by members without "invite_guest" permission
CVE-2024-1942 4.3 MEDIUM Mattermost 安全漏洞
CVE-2024-1953 4.3 MEDIUM Mattermost 安全漏洞
CVE-2024-23488 3.1 LOW Files of archived channels accessible with the “Allow users to view archived channels” opt
CVE-2024-1952 3.1 LOW Mattermost 安全漏洞
CVE-2024-1949 2.6 LOW Mattermost 安全漏洞

IV. Related Vulnerabilities

Same product: Mattermost
Same vendor: Mattermost
Same weakness: CWE-400

V. Comments for CVE-2024-24988

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