An apache-log4j1.2 security update has been released for Debian GNU/Linux 8 LTS

Package : apache-log4j1.2
Version : 1.2.17-5+deb8u1
CVE ID : CVE-2019-17571
Debian Bug : 947124

Included in Log4j 1.2, a logging library for Java, is a SocketServer
class that is vulnerable to deserialization of untrusted data which can
be exploited to remotely execute arbitrary code when combined with a
deserialization gadget when listening to untrusted network traffic for
log data.

For Debian 8 "Jessie", this problem has been fixed in version
1.2.17-5+deb8u1.

We recommend that you upgrade your apache-log4j1.2 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