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CVE-2020-11050— Improper Validation of Certificate with Host Mismatch in Java-WebSocket

Quick assessment

Affected
TooTallNate Java-WebSocket
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.

Java-WebSocket是一款使用Java语言编写的WebSocket客户端和服务器实现。 Java-WebSocket 1.4.1及之前版本中存在信任管理问题漏洞，该漏洞源于WebSocketClient没有验证SSL主机名。攻击者可借助中间人攻击利用该漏洞获取敏感信息。

CVSS 9.0 · Critical EPSS 0.77% · P54

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle
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I. Basic Information for CVE-2020-11050

Vulnerability Information
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Vulnerability Title
Improper Validation of Certificate with Host Mismatch in Java-WebSocket
Source: CVE Program / CVE List V5
Vulnerability Description
In Java-WebSocket less than or equal to 1.4.1, there is an Improper Validation of Certificate with Host Mismatch where WebSocketClient does not perform SSL hostname validation. This has been patched in 1.5.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对宿主不匹配的证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Java-WebSocket 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Java-WebSocket是一款使用Java语言编写的WebSocket客户端和服务器实现。 Java-WebSocket 1.4.1及之前版本中存在信任管理问题漏洞，该漏洞源于WebSocketClient没有验证SSL主机名。攻击者可借助中间人攻击利用该漏洞获取敏感信息。
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
TooTallNate Java-WebSocket <= 1.4.1 -

II. Public POCs for CVE-2020-11050

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III. Intelligence Information for CVE-2020-11050

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Vendor Advisories for CVE-2020-11050 (1)

IV. Related Vulnerabilities

Same product: Java-WebSocket
Same vendor: TooTallNate
Same weakness: CWE-297

V. Comments for CVE-2020-11050

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