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Date: Wed, 18 Jul 2018 09:02:27 +0100
From: Mark Cox <>
Cc: Apache Software Foundation HTTP Server Project <>
Subject: CVE-2018-8011: Apache HTTP Server mod_md DoS

CVE-2018-8011: mod_md DoS via Coredumps on specially crafted requests

Severity: Moderate

Vendor: The Apache Software Foundation

Versions Affected:
httpd 2.4.33

By specially crafting HTTP requests, the mod_md challenge
handler would dereference a NULL pointer and cause the child
process to segfault. This could be used to DoS the server

All httpd users should upgrade to 2.4.34 or later.

The issue was discovered by Daniel Caminada


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