CVE-2024-43394

Estado: ModificadaAlta (7.5)—

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.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Puntuación base: 7.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 1.22%
Percentil entre todas las CVEs puntuadas: 68
Fecha de la puntuación: 6/10/2026

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

ExplotaciónT1190 Exploit Public-Facing Applicationinitial access85 %
Impacto principalT1090.002 External Proxycommand and control80 %
Impacto secundarioT1552.007 Container APIcredential access75 %

SSRF en servidor web accesible remotamente sin autenticación (AV:N/PR:N/UI:N). Impacto: proxy SSRF para redirigir tráfico y fuga de hashes NTLM vía UNC paths en Windows.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Privileged Account Management Network Segmentation Limit Access to Resource Over Network Vulnerability Scanning User Account Management Network Intrusion Prevention

Tecnologías afectadas (1)

Apache — Http Server

CWE

CWE-918

Referencias

JSON original (NVD)

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      "value": "Server-Side Request Forgery (SSRF) in Apache HTTP Server on Windows allows to potentially leak NTLM hashes to a malicious server via \nmod_rewrite or apache expressions that pass unvalidated request input.\n\nThis issue affects Apache HTTP Server: from 2.4.0 through 2.4.63.\n\nNote:  The Apache HTTP Server Project will be setting a higher bar for accepting vulnerability reports regarding SSRF via UNC paths. \n\nThe server offers limited protection against administrators directing the server to open UNC paths.\nWindows servers should limit the hosts they will connect over via SMB based on the nature of NTLM authentication."
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