Debian LTS: DLA-1970-1: php5 security update
Summary
Instances are vulnerable depending on the web server configuration, in
particular PATH_INFO handling. For a full list of preconditions,
check: https://github.com/neex/phuip-fpizdam
For Debian 8 "Jessie", this problem has been fixed in version
5.6.40+dfsg-0+deb8u7.
We recommend that you upgrade your php5 packages.
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS