Source: libnova Version: 0.14.0-2 Severity: normal Tags: patch Dear Maintainer,
The CFLAGS hardening flags are missing because ./configure
overwrites them. For more hardening information please have a
look at [1], [2] and [3].
The attached patch fixes the issue, if possible it should be sent
to upstream.
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/libnovaconfig
/usr/lib/x86_64-linux-gnu/libnova-0.14.so.0.0.0
/usr/bin/libnovaconfig:
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/x86_64-linux-gnu/libnova-0.14.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!
(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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Description: Use CFLAGS from environment (dpkg-buildflags). Necessary for hardening flags. Author: Simon Ruderich <[email protected]> Last-Update: 2012-05-04 --- libnova-0.14.0.orig/configure.in +++ libnova-0.14.0/configure.in @@ -63,7 +63,7 @@ AC_CHECK_FUNCS([acosl]) AC_CHECK_FUNCS([asinl]) AC_CHECK_FUNCS([atan2l]) -CFLAGS=-Wall +CFLAGS="$CFLAGS -Wall" # Checks for header files. AC_HEADER_STDC --- libnova-0.14.0.orig/configure +++ libnova-0.14.0/configure @@ -12529,7 +12529,7 @@ fi done -CFLAGS=-Wall +CFLAGS="$CFLAGS -Wall" # Checks for header files. { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
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