[Debian-med-packaging] Bug#668120: theseus: Hardening flags missing

Simon Ruderich simon at ruderich.org
Mon Apr 9 00:26:47 UTC 2012


Package: theseus
Version: 1.6.2-1
Severity: normal
Tags: patch

Dear Maintainer,

The hardening flags are missing because the build system ignores
them. For more hardening information please have a look at [1],
[2] and [3].

The two attached patches fix the issue. The first one
(21_use_dpkg_buildflags.patch) should be sent to upstream if
possible, the second (22_hardening_compile.patch) is only
necessary for the debian package. The second patch also sets
-Wno-error=unused-result to prevent a build failure - fixing all
those warnings is a lot of work.

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/theseus
    /usr/bin/theseus:
     Position Independent Executable: no, normal executable!
     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
-- 
+ privacy is necessary
+ using gnupg http://gnupg.org
+ public key id: 0x92FEFDB7E44C32F9
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 21_use_dpkg_buildflags.patch
Type: text/x-diff
Size: 1989 bytes
Desc: not available
URL: <http://lists.alioth.debian.org/pipermail/debian-med-packaging/attachments/20120409/43ab81ad/attachment.patch>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 22_hardening_compile.patch
Type: text/x-diff
Size: 1092 bytes
Desc: not available
URL: <http://lists.alioth.debian.org/pipermail/debian-med-packaging/attachments/20120409/43ab81ad/attachment-0001.patch>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 836 bytes
Desc: Digital signature
URL: <http://lists.alioth.debian.org/pipermail/debian-med-packaging/attachments/20120409/43ab81ad/attachment.pgp>


More information about the Debian-med-packaging mailing list