Apache HTTP Server versions before 2.4.32 uses src:uwsgi where a flaw was discovered. The uwsgi protocol does not let us serialize more than 16K of HTTP header leading to resource exhaustion and denial of service.
For Debian 8 jessie, these problems have been fixed in version 2.0.7-1+deb8u3.
We recommend that you upgrade your uwsgi packages.
Further information about Extended LTS security advisories can be found at: https://deb.freexian.com/extended-lts/