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CVE-2020-13943

Quick assessment

Affected
n/a Apache Tomcat
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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存在安全漏洞，该漏洞源于如果一个HTTP/2客户端连接到超过约定的最大数量的并发流连接(违反HTTP / 2协议),它是可能的后续请求在该连接可以包含HTTP头信息,包括HTTP / 2伪头,从先前的请求而不是标题。这可能导致用户看到对意外资源的响应。以下产品及版本受到影响：10.0.0-M1版本至10.0.0-

AI Predicted 6.5 Difficulty: Moderate EPSS 57.29% · P99
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I. Basic Information for CVE-2020-13943

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
If an HTTP/2 client connecting to Apache Tomcat 10.0.0-M1 to 10.0.0-M7, 9.0.0.M1 to 9.0.37 or 8.5.0 to 8.5.57 exceeded the agreed maximum number of concurrent streams for a connection (in violation of the HTTP/2 protocol), it was possible that a subsequent request made on that connection could contain HTTP headers - including HTTP/2 pseudo headers - from a previous request rather than the intended headers. This could lead to users seeing responses for unexpected resources.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Tomcat 安全漏洞
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存在安全漏洞，该漏洞源于如果一个HTTP/2客户端连接到超过约定的最大数量的并发流连接(违反HTTP / 2协议),它是可能的后续请求在该连接可以包含HTTP头信息,包括HTTP / 2伪头,从先前的请求而不是标题。这可能导致用户看到对意外资源的响应。以下产品及版本受到影响：10.0.0-M1版本至10.0.0-
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 Tomcat Apache Tomcat 10.0.0-M1 to 10.0.0-M7, 9.0.0.M1 to 9.0.37, 8.5.0 to 8.5.57 -

II. Public POCs for CVE-2020-13943

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III. Intelligence Information for CVE-2020-13943

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Vendor Advisories for CVE-2020-13943 (2)

Mailing List Discussions for CVE-2020-13943 (4)

Same Patch Batch · n/a · 2020-10-12 · 20 CVEs total

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CVE-2020-9090 Huawei FusionAccess 安全漏洞
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CVE-2020-9230 Huawei ws5800-10 数据伪造问题漏洞

IV. Related Vulnerabilities

Same product: Apache Tomcat
Same vendor: n/a

V. Comments for CVE-2020-13943

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