Package: enca Version: 1.14-1 Severity: normal Tags: patch Dear Maintainer,
The CFLAGS hardening/build flags are missing because they are
overwritten in debian/rules. For more hardening information
please have a look at [1], [2] and [3].
The following patch fixes the issue.
diff -Nru enca-1.14/debian/rules enca-1.14/debian/rules
--- enca-1.14/debian/rules 2012-09-11 11:46:23.000000000 +0200
+++ enca-1.14/debian/rules 2012-09-11 20:33:01.000000000 +0200
@@ -13,7 +13,7 @@
DEB_BUILD_GNU_TYPE ?= $(shell dpkg-architecture -qDEB_BUILD_GNU_TYPE)
-CFLAGS = -Wall -g
+CFLAGS += -Wall -g
ifneq (,$(findstring noopt,$(DEB_BUILD_OPTIONS)))
CFLAGS += -O0
To check if all flags were correctly enabled you can use
`hardening-check` from the hardening-includes package and check
the build log with `blhc` (hardening-check doesn't catch
everything):
$ hardening-check /usr/lib/libenca.so.0.5.1
/usr/lib/debug/usr/lib/libenca.so.0.5.1 /usr/bin/enca
/usr/lib/libenca.so.0.5.1:
Position Independent Executable: no, regular shared library (ignored)
Stack protected: yes
Fortify Source functions: no, only unprotected functions found!
Read-only relocations: yes
Immediate binding: no not found!
/usr/lib/debug/usr/lib/libenca.so.0.5.1:
Position Independent Executable: no, regular shared library (ignored)
Stack protected: yes
Fortify Source functions: unknown, not linked against libc
Read-only relocations: yes
Immediate binding: no not found!
/usr/bin/enca:
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
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