A radicale security update has been released for Debian GNU/Linux 8 LTS.

DLA 2187-1: radicale security update

Package : radicale
Version : 0.9-1+deb8u2
CVE ID : CVE-2017-8342

Radicale, a simple calendar and addressbook server - daemon, is prone to
timing oracles and simple brute-force attacks when using the htpasswd
authentication method.

For Debian 8 "Jessie", this problem has been fixed in version
0.9-1+deb8u2.

We recommend that you upgrade your radicale 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