CVE-2021-37860
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 5.38及之前版本存在安全漏洞，该漏洞源于应用未能充分清理剪贴板内容，这允许用户辅助攻击者在明确禁用默认CSP的产品部署中注入任意Web脚本。
Possible ATT&CK Techniques 3 AI
T1041 · Exfiltration Over C2 Channel T1059 · Command and Scripting Interpreter T1189 · Drive-by Compromise
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I. Basic Information for CVE-2021-37860
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost 5.38 and earlier fails to sufficiently sanitize clipboard contents, which allows a user-assisted attacker to inject arbitrary web script in product deployments that explicitly disable the default CSP.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Mattermost 跨站脚本漏洞
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 5.38及之前版本存在安全漏洞，该漏洞源于应用未能充分清理剪贴板内容，这允许用户辅助攻击者在明确禁用默认CSP的产品部署中注入任意Web脚本。
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 | unspecified ~ 5.38 | - |
|
II. Public POCs for CVE-2021-37860
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2021-37860 (1)
-
https://mattermost.com/security-updates/ x_refsource_MISC
IV. Related Vulnerabilities
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Same weakness: CWE-79
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V. Comments for CVE-2021-37860
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