Debian 9 Stretch: DLA-2968-1 Moderate: zlib Memory Issue Exploit

Danilo Ramos discovered that incorrect memory handling in zlib's deflate
handling could result in denial of service or potentially the execution
of arbitrary code if specially crafted input is processed.

For Debian 9 stretch, this problem has been fixed in version
1:1.2.8.dfsg-5+deb9u1.

We recommend that you upgrade your zlib packages.

For the detailed security status of zlib please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/zlib

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