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CVE-2024-38473— Apache HTTP Server proxy encoding problem

Quick assessment

Affected
Apache Software Foundation Apache HTTP Server
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 HTTP Server是美国阿帕奇（Apache）基金会的一款开源网页服务器。该服务器具有快速、可靠且可通过简单的API进行扩充的特点。 Apache HTTP Server 2.4.59及之前版本中存在安全漏洞，该漏洞源于mod_proxy存在编码问题，可能通过精心设计的请求绕过身份验证。

AI Predicted 7.5 Difficulty: Easy EPSS 25.88% · P98

Public Exploits 1

Nuclei · 1 CVE-2024-38473.yaml [template]

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2024-38473

Vulnerability Information
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Vulnerability Title
Apache HTTP Server proxy encoding problem
Source: CVE Program / CVE List V5
Vulnerability Description
Encoding problem in mod_proxy in Apache HTTP Server 2.4.59 and earlier allows request URLs with incorrect encoding to be sent to backend services, potentially bypassing authentication via crafted requests. Users are recommended to upgrade to version 2.4.60, which fixes this issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
对输出编码和转义不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Apache HTTP Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache HTTP Server是美国阿帕奇（Apache）基金会的一款开源网页服务器。该服务器具有快速、可靠且可通过简单的API进行扩充的特点。 Apache HTTP Server 2.4.59及之前版本中存在安全漏洞，该漏洞源于mod_proxy存在编码问题，可能通过精心设计的请求绕过身份验证。
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)

Shenlong Deep Dive — AI Deep Analysis

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache HTTP Server 2.4.0 ~ 2.4.59 -

II. Public POCs for CVE-2024-38473

# POC Description Source Link Shenlong Link
1 None https://github.com/Abdurahmon3236/CVE-2024-38473 POC Details
2 Nuclei template to detect Apache servers vulnerable to CVE-2024-38473 https://github.com/juanschallibaum/CVE-2024-38473-Nuclei-Template POC Details
3 Encoding problem in mod_proxy in Apache HTTP Server 2.4.59 and earlier allows request URLs with incorrect encoding to be sent to backend services, potentially bypassing authentication via crafted requests. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2024/CVE-2024-38473.yaml POC Details
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III. Intelligence Information for CVE-2024-38473

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Vendor Advisories for CVE-2024-38473 (2)

Same Patch Batch · Apache Software Foundation · 2024-07-01 · 8 CVEs total

CVE-2024-36387 Apache HTTP Server: DoS by Null pointer in websocket over HTTP/2
CVE-2024-38472 Apache HTTP Server on WIndows UNC SSRF
CVE-2024-38474 Apache HTTP Server weakness with encoded question marks in backreferences
CVE-2024-38475 Apache HTTP Server weakness in mod_rewrite when first segment of substitution matches file
CVE-2024-38476 Apache HTTP Server may use exploitable/malicious backend application output to run local h
CVE-2024-38477 Apache HTTP Server: Crash resulting in Denial of Service in mod_proxy via a malicious requ
CVE-2024-39573 Apache HTTP Server: mod_rewrite proxy handler substitution

IV. Related Vulnerabilities

Same product: Apache HTTP Server
Same vendor: Apache Software Foundation
Same weakness: CWE-116

V. Comments for CVE-2024-38473

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