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CVE-2021-24122— Apache Tomcat information disclosure

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 存在信息泄露漏洞，该漏洞源于JRE API File.getCanonicalPath() 与 Windows API (FindFirstFileW)行为不一致。以下产品及版本受到影响：Apache Tomcat versions 10.0.0-M1 to 10.0.0-M9, 9.0.0.M1 to 9.0

AI Predicted 5.3 Difficulty: Moderate EPSS 22.85% · P98

Possible ATT&CK Techniques 1 AI

T1213 · Data from Information Repositories

Affected Version Matrix 4

VendorProduct Version RangeStatus
Apache Software Foundation Apache Tomcat Apache Tomcat 10< 10.0.0-M10 affected
Apache Tomcat 9< 9.0.40 affected
Apache Tomcat 8.5< 8.5.60 affected
Apache Tomcat 7< 7.0.106 affected
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I. Basic Information for CVE-2021-24122

Vulnerability Information
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Vulnerability Title
Apache Tomcat information disclosure
Source: CVE Program / CVE List V5
Vulnerability Description
When serving resources from a network location using the NTFS file system, Apache Tomcat versions 10.0.0-M1 to 10.0.0-M9, 9.0.0.M1 to 9.0.39, 8.5.0 to 8.5.59 and 7.0.0 to 7.0.106 were susceptible to JSP source code disclosure in some configurations. The root cause was the unexpected behaviour of the JRE API File.getCanonicalPath() which in turn was caused by the inconsistent behaviour of the Windows API (FindFirstFileW) in some circumstances.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Tomcat 信息泄露漏洞
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 存在信息泄露漏洞，该漏洞源于JRE API File.getCanonicalPath() 与 Windows API (FindFirstFileW)行为不一致。以下产品及版本受到影响：Apache Tomcat versions 10.0.0-M1 to 10.0.0-M9, 9.0.0.M1 to 9.0
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 Software Foundation Apache Tomcat Apache Tomcat 10 ~ 10.0.0-M10 -

II. Public POCs for CVE-2021-24122

# POC Description Source Link Shenlong Link
1 None https://github.com/Threekiii/Awesome-POC/blob/master/%E4%B8%AD%E9%97%B4%E4%BB%B6%E6%BC%8F%E6%B4%9E/Apache%20Tomcat%20%E4%BF%A1%E6%81%AF%E6%B3%84%E9%9C%B2%E6%BC%8F%E6%B4%9E%20CVE-2021-24122.md POC Details
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III. Intelligence Information for CVE-2021-24122

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Vendor Advisories for CVE-2021-24122 (2)

Mailing List Discussions for CVE-2021-24122 (9)

IV. Related Vulnerabilities

Same product: Apache Tomcat
Same vendor: Apache Software Foundation
Same weakness: CWE-200

V. Comments for CVE-2021-24122

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