FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports Collection

Apache httpd -- denial of service in HTTP/2

Affected packages
2.4.17 <= apache24 <= 2.4.23_1
mod_http2-devel < 1.8.3

Details

VuXML ID cb0bf1ec-bb92-11e6-a9a5-b499baebfeaf
Discovery 2016-12-06
Entry 2016-12-06

mod_http2 reports:

The Apache HTTPD web server (from 2.4.17-2.4.23) did not apply limitations on request headers correctly when experimental module for the HTTP/2 protocol is used to access a resource.

The net result is that a the server allocates too much memory instead of denying the request. This can lead to memory exhaustion of the server by a properly crafted request.

References

CVE Name CVE-2016-8740
URL http://mail-archives.apache.org/mod_mbox/httpd-announce/201612.mbox/%3C1A097A43-7CCB-4BA1-861F-E0C7EEE83A4B%40apache.org%3E
URL https://github.com/icing/mod_h2/releases/tag/v1.8.3