CVE-2016-4979
High · 7.5CVSS
7.5
EPSS
18.8%
Published
Jul 6, 2016
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Debian:11 | apache2 | 0 | 2.4.23-1 |
| Debian:12 | apache2 | 0 | 2.4.23-1 |
| Debian:13 | apache2 | 0 | 2.4.23-1 |
| Red Hat:rhel_software_collections:2::el6 | httpd24-httpd | 0 | 0:2.4.18-11.el6 |
| Red Hat:rhel_software_collections:2::el6 | httpd24-httpd-debuginfo | 0 | 0:2.4.18-11.el6 |
| Red Hat:rhel_software_collections:2::el6 | httpd24-httpd-devel | 0 | 0:2.4.18-11.el6 |
| Red Hat:rhel_software_collections:2::el6 | httpd24-httpd-manual | 0 | 0:2.4.18-11.el6 |
| Red Hat:rhel_software_collections:2::el6 | httpd24-httpd-tools | 0 | 0:2.4.18-11.el6 |
| Red Hat:rhel_software_collections:2::el6 | httpd24-mod_ldap | 0 | 0:2.4.18-11.el6 |
| Red Hat:rhel_software_collections:2::el6 | httpd24-mod_proxy_html | 0 | 1:2.4.18-11.el6 |
| Red Hat:rhel_software_collections:2::el6 | httpd24-mod_session | 0 | 0:2.4.18-11.el6 |
| Red Hat:rhel_software_collections:2::el6 | httpd24-mod_ssl | 0 | 1:2.4.18-11.el6 |
| Red Hat:rhel_software_collections:2::el7 | httpd24-httpd | 0 | 0:2.4.18-11.el7 |
| Red Hat:rhel_software_collections:2::el7 | httpd24-httpd-debuginfo | 0 | 0:2.4.18-11.el7 |
| Red Hat:rhel_software_collections:2::el7 | httpd24-httpd-devel | 0 | 0:2.4.18-11.el7 |
| Red Hat:rhel_software_collections:2::el7 | httpd24-httpd-manual | 0 | 0:2.4.18-11.el7 |
| Red Hat:rhel_software_collections:2::el7 | httpd24-httpd-tools | 0 | 0:2.4.18-11.el7 |
| Red Hat:rhel_software_collections:2::el7 | httpd24-mod_ldap | 0 | 0:2.4.18-11.el7 |
| Red Hat:rhel_software_collections:2::el7 | httpd24-mod_proxy_html | 0 | 1:2.4.18-11.el7 |
| Red Hat:rhel_software_collections:2::el7 | httpd24-mod_session | 0 | 0:2.4.18-11.el7 |
| Red Hat:rhel_software_collections:2::el7 | httpd24-mod_ssl | 0 | 1:2.4.18-11.el7 |
| openSUSE:Tumbleweed | apache2 | 0 | 2.4.23-4.1 |
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