HTTP/2 Request Authorization Bypass in Apache HTTP Server 2.4.18-2.4.20

CVE-2016-4979 · MEDIUM Severity

AV:N/AC:L/AU:N/C:N/I:P/A:N

The Apache HTTP Server 2.4.18 through 2.4.20, when mod_http2 and mod_ssl are enabled, does not properly recognize the "SSLVerifyClient require" directive for HTTP/2 request authorization, which allows remote attackers to bypass intended access restrictions by leveraging the ability to send multiple requests over a single connection and aborting a renegotiation.

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