CVE-2023-5522— Mobile app freezes when receiving a post with hundreds of emojis
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 Mobile存在安全漏洞，该漏洞源于未能限制帖子中 Markdown 元素的最大数量，从而允许攻击者将包含数百个表情符号的帖子发送到某个频道，并在用户查看该特定频道时冻结用户的移动应用。
Possible ATT&CK Techniques 1 AI
T1429
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I. Basic Information for CVE-2023-5522
Vulnerability Information
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Vulnerability Title
Mobile app freezes when receiving a post with hundreds of emojis
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost Mobile fails to limit the maximum number of Markdown elements in a post allowing an attacker to send a post with hundreds of emojis to a channel and freeze the mobile app of users when viewing that particular channel.
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 Mobile存在安全漏洞，该漏洞源于未能限制帖子中 Markdown 元素的最大数量，从而允许攻击者将包含数百个表情符号的帖子发送到某个频道，并在用户查看该特定频道时冻结用户的移动应用。
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 ~ 2.8.0 | - |
|
II. Public POCs for CVE-2023-5522
| # | POC Description | Source Link | Shenlong Link |
|---|
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V. Comments for CVE-2023-5522
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