CVE-2021-32746

Icinga Web 2 is an open source monitoring web interface, framework and
command-line interface. Between versions 2.3.0 and 2.8.2, the doc module
of Icinga Web 2 allows to view documentation directly in the UI. It must be
enabled manually by an administrator and users need explicit access
permission to use it. Then, by visiting a certain route, it is possible to
gain access to arbitrary files readable by the web-server user. The issue
has been fixed in the 2.9.0, 2.8.3, and 2.7.5 releases. As a workaround, an
administrator may disable the doc module or revoke permission to use it
from all users.

Bugs

• <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=991116&gt;