Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

CVE-2016-4979

Published: 6 July 2016

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.

Notes

AuthorNote
mdeslaur
advisory says introduced in 2.4.18
xenial package not built with mod_http2 support

Priority

Medium

CVSS 3 base score: 7.5

Status

Package Release Status
apache2
Launchpad, Ubuntu, Debian
upstream
Released (2.4.23-1)
precise Not vulnerable
(code not present)
trusty Not vulnerable
(code not present)
wily Not vulnerable
(code not present)
xenial Not vulnerable
(no mod_http2 support)
Patches:
upstream: https://svn.apache.org/r1750779