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CVE-2024-38474— Apache HTTP Server weakness with encoded question marks in backreferences

Quick assessment

Affected
Apache Software Foundation Apache HTTP Server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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及之前版本存在安全漏洞，该漏洞源于mod_rewrite存在替换编码问题，允许攻击者在配置允许的目录中执行脚本。

AI Predicted 7.5 Difficulty: Moderate EPSS 2.46% · P84
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I. Basic Information for CVE-2024-38474

Vulnerability Information
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Vulnerability Title
Apache HTTP Server weakness with encoded question marks in backreferences
Source: CVE Program / CVE List V5
Vulnerability Description
Substitution encoding issue in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows attacker to execute scripts in directories permitted by the configuration but not directly reachable by any URL or source disclosure of scripts meant to only to be executed as CGI. Users are recommended to upgrade to version 2.4.60, which fixes this issue. Some RewriteRules that capture and substitute unsafely will now fail unless rewrite flag "UnsafeAllow3F" is specified.
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及之前版本存在安全漏洞，该漏洞源于mod_rewrite存在替换编码问题，允许攻击者在配置允许的目录中执行脚本。
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 HTTP Server 2.4.0 ~ 2.4.59 -

II. Public POCs for CVE-2024-38474

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III. Intelligence Information for CVE-2024-38474

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Vendor Advisories for CVE-2024-38474 (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-2024-38473 Apache HTTP Server proxy encoding problem
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-2024-38474

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