Package: korundum Version: 4:4.7.4-1 Severity: important Tags: patch Dear Maintainer,
The CPPFLAGS hardening flags are missing because CMake ignores
them by default.
The following patch fixes the issue by adding them to
CFLAGS/CXXFLAGS. For more hardening information please have a
look at [1], [2] and [3].
diff -Nru korundum-4.7.4/debian/rules korundum-4.7.4/debian/rules
--- korundum-4.7.4/debian/rules 2012-04-02 20:14:12.000000000 +0200
+++ korundum-4.7.4/debian/rules 2012-04-07 18:15:10.000000000 +0200
@@ -1,5 +1,10 @@
#! /usr/bin/make -f
+# CMake doesn't use CPPFLAGS, pass them to CFLAGS/CXXFLAGS to enable the
+# missing (hardening) flags.
+export DEB_CFLAGS_MAINT_APPEND = $(shell dpkg-buildflags --get CPPFLAGS)
+export DEB_CXXFLAGS_MAINT_APPEND = $(shell dpkg-buildflags --get CPPFLAGS)
+
#Always use Ruby 1.8.x
RUBY_SITEARCH := $(shell ruby1.8 -rrbconfig -e 'puts
Config::CONFIG["sitearch"]')
CMAKE_FLAGS := \
To check if all flags were correctly enabled you can use
`hardening-check` from the hardening-includes package and check
the build log (hardening-check doesn't catch everything).
$ hardening-check /usr/bin/krubyapplication
/usr/lib/kde4/krubypluginfactory.so ...
/usr/bin/krubyapplication:
Position Independent Executable: no, normal executable!
Stack protected: no, not found!
Fortify Source functions: yes
Read-only relocations: yes
Immediate binding: no not found!
/usr/lib/kde4/krubypluginfactory.so:
Position Independent Executable: no, regular shared library (ignored)
Stack protected: no, not found!
Fortify Source functions: yes (some protected functions found)
Read-only relocations: yes
Immediate binding: no not found!
...
(Position Independent Executable and Immediate binding is not
enabled by default.)
Use find -type f \( -executable -o -name \*.so\* \) -exec
hardening-check {} + on the build result to check all files.
Regards,
Simon
[1]: https://wiki.debian.org/ReleaseGoals/SecurityHardeningBuildFlags
[2]: https://wiki.debian.org/HardeningWalkthrough
[3]: https://wiki.debian.org/Hardening
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