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

Package : spamassassin
Version : 3.4.2-0+deb8u2
CVE ID : CVE-2018-11805 CVE-2019-12420
Debian Bug : 946652 946653

Two vulnerabilities were discovered in spamassassin, a Perl-based spam
filter using text analysis.

CVE-2018-11805

Malicious rule or configuration files, possibly downloaded from an
updates server, could execute arbitrary commands under multiple
scenarios.

CVE-2019-12420

Specially crafted mulitpart messages can cause spamassassin to use
excessive resources, resulting in a denial of service.

For Debian 8 "Jessie", these problems have been fixed in version
3.4.2-0+deb8u2.

We recommend that you upgrade your spamassassin 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