Package: downtimed Version: 0.5-2 Severity: normal Tags: patch Dear Maintainer,
The CPPFLAGS hardening flags are missing because there is a typo
in debian/rules. For more hardening information please have a
look at [1], [2] and [3].
The following patch fixes the issue.
diff -Nru downtimed-0.5/debian/rules downtimed-0.5/debian/rules
--- downtimed-0.5/debian/rules 2012-04-03 01:32:29.000000000 +0200
+++ downtimed-0.5/debian/rules 2012-05-11 10:57:48.000000000 +0200
@@ -1,6 +1,6 @@
#!/usr/bin/make -f
-CPPLAGS = $(shell dpkg-buildflags --get CPPFLAGS)
+CPPFLAGS = $(shell dpkg-buildflags --get CPPFLAGS)
CFLAGS = $(shell dpkg-buildflags --get CFLAGS)
LDFLAGS = $(shell dpkg-buildflags --get LDFLAGS)
export CPPFLAGS CFLAGS LDFLAGS
Instead of setting the flags manually you could also update
compat level to 9 which automatically injects the hardening
flags. This makes the lines above in the rules file unnecessary.
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/bin/downtimes /usr/sbin/downtimed
/usr/bin/downtimes:
Position Independent Executable: no, normal executable!
Stack protected: no, not found!
Fortify Source functions: yes (some protected functions found)
Read-only relocations: yes
Immediate binding: no not found!
/usr/sbin/downtimed:
Position Independent Executable: no, normal executable!
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
[4]: http://ruderich.org/simon/blhc/
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