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CVE-2016-8740

Published: 5 December 2016

The mod_http2 module in the Apache HTTP Server 2.4.17 through 2.4.23, when the Protocols configuration includes h2 or h2c, does not restrict request-header length, which allows remote attackers to cause a denial of service (memory consumption) via crafted CONTINUATION frames in an HTTP/2 request.

Notes

AuthorNote
mdeslaur
mod_http2 is not built in Ubuntu because it is considered
experimental.

Priority

Medium

CVSS 3 base score: 7.5

Status

Package Release Status
apache2
Launchpad, Ubuntu, Debian
upstream
Released (2.4.25-1)
precise Not vulnerable
(code not present)
trusty Not vulnerable
(code not present)
xenial Not vulnerable
(no mod_http2 support)
yakkety Not vulnerable
(no mod_http2 support)
zesty Not vulnerable
(2.4.25-3ubuntu2)
Patches:
upstream: https://github.com/apache/httpd/commit/29c63b786ae028d82405421585e91283c8fa0da3
upstream: https://svn.apache.org/viewvc?view=revision&revision=1772579 (2.4)