reopen 655139 thanks Dear Maintainer,
The CPPFLAGS hardening flags are still missing because they are
ignored by the build system. For more hardening information
please have a look at [1], [2] and [3].
The following patch fixes the issue.
diff -Nru openswan-2.6.37/debian/rules openswan-2.6.37/debian/rules
--- openswan-2.6.37/debian/rules 2012-05-17 16:08:37.000000000 +0200
+++ openswan-2.6.37/debian/rules 2012-05-27 02:52:57.000000000 +0200
@@ -13,6 +13,11 @@
DEB_CXXFLAGS_MAINT_APPEND=-fno-strict-aliasing
include /usr/share/dpkg/buildflags.mk
+# The build system doesn't respect CPPFLAGS, pass them to CFLAGS/CXXFLAGS to
+# enable the missing (hardening) flags.
+CFLAGS += $(CPPFLAGS)
+CXXFLAGS += $(CPPFLAGS)
+
build-arch: build
build-indep: build
build: build-stamp
To check if all flags were correctly enabled you can use
`hardening-check` from the hardening-includes package and check
the build log (for example with blhc [4]) (hardening-check
doesn't catch everything):
$ hardening-check /usr/lib/ipsec/pf_key /usr/lib/ipsec/klipsdebug
/usr/lib/ipsec/tncfg /usr/lib/ipsec/spigrp ...
/usr/lib/ipsec/pf_key:
Position Independent Executable: yes
Stack protected: yes
Fortify Source functions: yes (some protected functions found)
Read-only relocations: yes
Immediate binding: yes
/usr/lib/ipsec/klipsdebug:
Position Independent Executable: yes
Stack protected: yes
Fortify Source functions: yes (some protected functions found)
Read-only relocations: yes
Immediate binding: yes
/usr/lib/ipsec/tncfg:
Position Independent Executable: yes
Stack protected: yes
Fortify Source functions: yes (some protected functions found)
Read-only relocations: yes
Immediate binding: yes
/usr/lib/ipsec/spigrp:
Position Independent Executable: yes
Stack protected: yes
Fortify Source functions: yes (some protected functions found)
Read-only relocations: yes
Immediate binding: yes
...
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
[4]: http://ruderich.org/simon/blhc/
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