Package: epstool Version: 3.08+repack-2 Severity: important Tags: patch Dear Maintainer,
The CPPFLAGS hardening flags are missing because the build system
ignores them.
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 epstool-3.08+repack/debian/rules epstool-3.08+repack/debian/rules
--- epstool-3.08+repack/debian/rules 2012-03-10 16:37:14.000000000 +0100
+++ epstool-3.08+repack/debian/rules 2012-04-07 18:34:57.000000000 +0200
@@ -5,6 +5,13 @@
export DEB_LDFLAGS_MAINT_APPEND = -Wl,--as-needed
+# The build system doesn't use CPPFLAGS, pass them to CFLAGS/CXXFLAGS to
+# enable the missing (hardening) flags. dpkg_buildflags is necessary because
+# $(shell ..) doesn't use local environment variables.
+dpkg_buildflags = DEB_BUILD_MAINT_OPTIONS=$(DEB_BUILD_MAINT_OPTIONS)
dpkg-buildflags
+export DEB_CFLAGS_MAINT_APPEND = $(shell $(dpkg_buildflags) --get CPPFLAGS)
+export DEB_CXXFLAGS_MAINT_APPEND = $(shell $(dpkg_buildflags) --get CPPFLAGS)
+
%:
dh $@
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/epstool
/usr/bin/epstool:
Position Independent Executable: yes
Stack protected: yes
Fortify Source functions: yes (some protected functions found)
Read-only relocations: yes
Immediate binding: yes
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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