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Message-ID: <ffdab13f-5e81-388d-0679-cb5b08525608@apache.org>
Date: Thu, 10 Jul 2025 17:13:47 +0000
From: Eric Covener <covener@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2024-43394: Apache HTTP Server: SSRF on Windows due to UNC
paths
Severity: moderate
Affected versions:
- Apache HTTP Server 2.4.0 through 2.4.63
Description:
Server-Side Request Forgery (SSRF) in Apache HTTP Server on Windows allows to potentially leak NTLM hashes to a malicious server via
mod_rewrite or apache expressions that pass unvalidated request input.
This issue affects Apache HTTP Server: from 2.4.0 through 2.4.63.
Note: The Apache HTTP Server Project will be setting a higher bar for accepting vulnerability reports regarding SSRF via UNC paths.
The server offers limited protection against administrators directing the server to open UNC paths.
Windows servers should limit the hosts they will connect over via SMB based on the nature of NTLM authentication.
Credit:
Kainan Zhang (@4xpl0r3r) from Fortinet (finder)
References:
https://httpd.apache.org/security/vulnerabilities_24.html
https://httpd.apache.org/
https://www.cve.org/CVERecord?id=CVE-2024-43394
Timeline:
2024-08-10: reported
2025-07-07: 2.4.x revision 1927041
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