A php5 security update has been released for Debian GNU/Linux 8 LTS to address a vulnerability that could lead to exhausted disk space on the server.

DLA 2261-1: php5 security update

Package : php5
Version : 5.6.40+dfsg-0+deb8u12
CVE ID : CVE-2019-11048

It has been discovered, that a vulnerability in php5, a server-side,
HTML-embedded scripting language, could lead to exhausted disk space on
the server. When using overly long filenames or field names, a memory
limit could be hit which results in stopping the upload but not cleaning
up behind.

Further the embedded version of "file" is vulnerable to CVE-2019-18218.
As it can not be exploited the same in php5 as in file, this issue is not
handled as an own CVE but just as a bug, that has been fixed here
(restrict the number of CDF_VECTOR elements to prevent a heap-based
buffer overflow (4-byte out-of-bounds write)).

For Debian 8 "Jessie", this problem has been fixed in version
5.6.40+dfsg-0+deb8u12.

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