/usr/share/cdbs/1/ is in cdbs 0.4.130+deb8u1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/cdbs/1/class/
/usr/share/cdbs/1/class/ant-vars.mk
/usr/share/cdbs/1/class/ant.mk
/usr/share/cdbs/1/class/autotools-files.mk
/usr/share/cdbs/1/class/autotools-vars.mk
/usr/share/cdbs/1/class/autotools.mk
/usr/share/cdbs/1/class/cmake.mk
/usr/share/cdbs/1/class/docbookxml.mk
/usr/share/cdbs/1/class/gnome.mk
/usr/share/cdbs/1/class/hbuild.mk
/usr/share/cdbs/1/class/kde.mk
/usr/share/cdbs/1/class/langcore.mk
/usr/share/cdbs/1/class/makefile-vars.mk
/usr/share/cdbs/1/class/makefile.mk
/usr/share/cdbs/1/class/pd.mk
/usr/share/cdbs/1/class/perl-build-vars.mk
/usr/share/cdbs/1/class/perl-build.mk
/usr/share/cdbs/1/class/perl-makemaker-vars.mk
/usr/share/cdbs/1/class/perl-makemaker.mk
/usr/share/cdbs/1/class/perl-vars.mk
/usr/share/cdbs/1/class/perlmodule-vars.mk
/usr/share/cdbs/1/class/perlmodule.mk
/usr/share/cdbs/1/class/python-autotools.mk
/usr/share/cdbs/1/class/python-distutils.mk
/usr/share/cdbs/1/class/python-module.mk
/usr/share/cdbs/1/class/python-sugar.mk
/usr/share/cdbs/1/class/python-vars.mk
/usr/share/cdbs/1/class/qmake.mk
/usr/share/cdbs/1/class/scons-vars.mk
/usr/share/cdbs/1/class/scons.mk
/usr/share/cdbs/1/class/waf.mk
/usr/share/cdbs/1/rules/
/usr/share/cdbs/1/rules/buildcore.mk
/usr/share/cdbs/1/rules/buildvars.mk
/usr/share/cdbs/1/rules/debhelper.mk
/usr/share/cdbs/1/rules/dpatch.mk
/usr/share/cdbs/1/rules/simple-patchsys.mk
/usr/share/cdbs/1/rules/tarball.mk
/usr/share/cdbs/1/rules/upstream-tarball.mk
/usr/share/cdbs/1/rules/utils.mk