A directory traversal vulnerability was discovered in Icinga Web 2, a web interface for Icinga, which could result in the disclosure of files readable by the process.

For Debian 9 stretch, this problem has been fixed in version 2.4.1-1+deb9u1.

We recommend that you upgrade your icingaweb2 packages.

For the detailed security status of icingaweb2 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/icingaweb2

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