CVE-2021-42340— DoS via memory leak with WebSocket connections
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I. Basic Information for CVE-2021-42340
Vulnerability Information
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Vulnerability Title
DoS via memory leak with WebSocket connections
Source: NVD (National Vulnerability Database)
Vulnerability Description
The fix for bug 63362 present in Apache Tomcat 10.1.0-M1 to 10.1.0-M5, 10.0.0-M1 to 10.0.11, 9.0.40 to 9.0.53 and 8.5.60 to 8.5.71 introduced a memory leak. The object introduced to collect metrics for HTTP upgrade connections was not released for WebSocket connections once the connection was closed. This created a memory leak that, over time, could lead to a denial of service via an OutOfMemoryError.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
对已超过有效生命周期的资源丧失索引
Source: NVD (National Vulnerability Database)
Vulnerability Title
Apache Tomcat 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Tomcat是美国阿帕奇（Apache）基金会的一款轻量级Web应用服务器。该程序实现了对Servlet和JavaServer Page（JSP）的支持。 Apache Tomcat存在资源管理错误漏洞，该漏洞源于网络系统或产品在内存上执行操作时，未正确验证数据边界，导致向关联的其他内存位置上执行了错误的读写操作。攻击者可利用该漏洞导致缓冲区溢出或堆溢出等。
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 |
|---|---|---|---|---|
| Apache Software Foundation | Apache Tomcat | Apache Tomcat 10 10.0.0-M10 to 10.0.11 | - |
II. Public POCs for CVE-2021-42340
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://www.oracle.com/security-alerts/cpujan2022.htmlx_refsource_MISC
- https://kc.mcafee.com/corporate/index?page=content&id=SB10379x_refsource_CONFIRM
- https://security.netapp.com/advisory/ntap-20211104-0001/x_refsource_CONFIRM
- https://www.oracle.com/security-alerts/cpujul2022.htmlx_refsource_MISC
- https://www.oracle.com/security-alerts/cpuapr2022.htmlx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-42340
IV. Related Vulnerabilities
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Same vendor: Apache Software Foundation
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V. Comments for CVE-2021-42340
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