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CVE-2023-46589— Apache Tomcat: HTTP request smuggling via malformed trailer headers

Quick assessment

Affected
Apache Software Foundation Apache Tomcat
Exploitation
Public or AI PoC available; prioritize validation
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存在环境问题漏洞，该漏洞源于存在不正确的输入验证漏洞，可能会导致将单个请求视为多个请求，从而在反向代理后面出现请求走私。

AI Predicted 7.5 Difficulty: Moderate EPSS 2.65% · P86

Possible ATT&CK Techniques 1 AI

T1102 · Web Service
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I. Basic Information for CVE-2023-46589

Vulnerability Information
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Vulnerability Title
Apache Tomcat: HTTP request smuggling via malformed trailer headers
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82 and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header size limit could cause Tomcat to treat a single request as multiple requests leading to the possibility of request smuggling when behind a reverse proxy. Older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.0-M11 onwards, 10.1.16 onwards, 9.0.83 onwards or 8.5.96 onwards, which fix the issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
HTTP请求的解释不一致性(HTTP请求私运)
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Tomcat 环境问题漏洞
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存在环境问题漏洞，该漏洞源于存在不正确的输入验证漏洞，可能会导致将单个请求视为多个请求，从而在反向代理后面出现请求走私。
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 11.0.0-M1 ~ 11.0.0-M10 -

II. Public POCs for CVE-2023-46589

# POC Description Source Link Shenlong Link
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default-local-qwen3.6 · 12043 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
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III. Intelligence Information for CVE-2023-46589

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Vendor Advisories for CVE-2023-46589 (1)

Mailing List Discussions for CVE-2023-46589 (3)

Same Patch Batch · Apache Software Foundation · 2023-11-28 · 5 CVEs total

CVE-2023-42504 5.8 MEDIUM Apache Superset: Lack of rate limiting allows for possible denial of service
CVE-2023-42502 4.8 MEDIUM Apache Superset: Open Redirect Vulnerability
CVE-2023-42505 4.3 MEDIUM Apache Superset: Sensitive information disclosure on db connection details
CVE-2022-41678 Apache ActiveMQ: Insufficient API restrictions on Jolokia allow authenticated users to per

IV. Related Vulnerabilities

Same product: Apache Tomcat
Same vendor: Apache Software Foundation
Same weakness: CWE-444

V. Comments for CVE-2023-46589

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