Package: p11-kit
Severity: important
Tags: patch
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Dear Maintainer,
The CPPFLAGS hardening flags are not used in the build.
The problem is "export CPPFLAGS" in debian/rules. I'm not
entirely sure why it causes the problem, but I guess the export
happens while parsing the Makefile - which overwrites the
hardening flags which get added later. The following patch fixes
that:
diff -Nru p11-kit-0.11/debian/rules p11-kit-0.11/debian/rules
- --- p11-kit-0.11/debian/rules 2012-03-03 18:53:22.000000000 +0100
+++ p11-kit-0.11/debian/rules 2012-03-04 04:44:20.000000000 +0100
@@ -1,7 +1,6 @@
#!/usr/bin/make -f
CPPFLAGS += -D_XOPEN_SOURCE=600 -D_BSD_SOURCE
- -export CPPFLAGS
# Uncomment this to turn on verbose mode.
#export DH_VERBOSE=1
To check if all flags were correctly enabled you can use
`hardening-check` from the hardening-includes package:
$ hardening-check /usr/bin/p11-kit
/usr/lib/x86_64-linux-gnu/libp11-kit.so.0.0.0
/usr/bin/p11-kit:
Position Independent Executable: no, normal executable!
Stack protected: yes
Fortify Source functions: yes
Read-only relocations: yes
Immediate binding: no not found!
/usr/lib/x86_64-linux-gnu/libp11-kit.so.0.0.0:
Position Independent Executable: no, regular shared library (ignored)
Stack protected: yes
Fortify Source functions: yes (some protected functions found)
Read-only relocations: yes
Immediate binding: no not found!
For more information please have a look at [1], [2] and [3].
Regards,
Simon
[1]: https://wiki.debian.org/ReleaseGoals/SecurityHardeningBuildFlags
[2]: https://wiki.debian.org/HardeningWalkthrough
[3]: https://wiki.debian.org/Hardening
- -- System Information:
Debian Release: wheezy/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 3.2.0-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
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