This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page.
View CVE-2016-4979 →
DEBIAN-CVE-2016-4979
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" direct...
Original description
The description as published by the source.
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.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Debian:12
apache2
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.23-1"}]}]
Debian:13
apache2
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.23-1"}]}]
Debian:14
apache2
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.23-1"}]}]
References
- advisory security-tracker.debian.org