Dear Maintainer, The CPPFLAGS hardening flags are missing because the build system ignores them.
The attached patch fixes the issue. If possible it should be sent
upstream.
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/rdesktop
/usr/bin/rdesktop:
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
Description: Use CPPFLAGS flags from environment (dpkg-buildflags). Necessary for hardening flags. Author: Simon Ruderich <si...@ruderich.org> Last-Update: 2012-03-12 --- rdesktop-1.7.1.orig/Makefile.in +++ rdesktop-1.7.1/Makefile.in @@ -17,6 +17,7 @@ KEYMAP_PATH = $(datadir)/rdesktop/keymap CC = @CC@ INSTALL = @INSTALL@ CFLAGS = @CFLAGS@ @X_CFLAGS@ @DEFS@ -DKEYMAP_PATH=\"$(KEYMAP_PATH)\" +CPPFLAGS = @CPPFLAGS@ LDFLAGS = @LDFLAGS@ @LIBS@ @X_LIBS@ @X_EXTRA_LIBS@ ifeq (,$(findstring nostrip,$(DEB_BUILD_OPTIONS))) STRIP = @STRIP@ @@ -39,22 +40,22 @@ VNCOBJ = vnc/rdp2vnc.o vnc/vnc.o vnc/x all: $(TARGETS) rdesktop: $(X11OBJ) $(SOUNDOBJ) $(RDPOBJ) $(SCARDOBJ) - $(CC) $(CFLAGS) -o rdesktop $(X11OBJ) $(SOUNDOBJ) $(RDPOBJ) $(SCARDOBJ) $(LDFLAGS) -lX11 + $(CC) $(CFLAGS) $(CPPFLAGS) -o rdesktop $(X11OBJ) $(SOUNDOBJ) $(RDPOBJ) $(SCARDOBJ) $(LDFLAGS) -lX11 rdp2vnc: $(VNCOBJ) $(SOUNDOBJ) $(RDPOBJ) $(SCARDOBJ) - $(VNCLINK) $(CFLAGS) -o rdp2vnc $(VNCOBJ) $(SOUNDOBJ) $(RDPOBJ) $(SCARDOBJ) $(LDFLAGS) $(LDVNC) + $(VNCLINK) $(CFLAGS) $(CPPFLAGS) -o rdp2vnc $(VNCOBJ) $(SOUNDOBJ) $(RDPOBJ) $(SCARDOBJ) $(LDFLAGS) $(LDVNC) vnc/rdp2vnc.o: rdesktop.c - $(CC) $(CFLAGS) $(VNCINC) -DRDP2VNC -o vnc/rdp2vnc.o -c rdesktop.c + $(CC) $(CFLAGS) $(CPPFLAGS) $(VNCINC) -DRDP2VNC -o vnc/rdp2vnc.o -c rdesktop.c vnc/vnc.o: vnc/vnc.c - $(CC) $(CFLAGS) $(VNCINC) -DRDP2VNC -o vnc/vnc.o -c vnc/vnc.c + $(CC) $(CFLAGS) $(CPPFLAGS) $(VNCINC) -DRDP2VNC -o vnc/vnc.o -c vnc/vnc.c vnc/xkeymap.o: xkeymap.c - $(CC) $(CFLAGS) $(VNCINC) -DRDP2VNC -o vnc/xkeymap.o -c xkeymap.c + $(CC) $(CFLAGS) $(CPPFLAGS) $(VNCINC) -DRDP2VNC -o vnc/xkeymap.o -c xkeymap.c vnc/x11stubs.o: vnc/x11stubs.c - $(CC) $(CFLAGS) $(VNCINC) -o vnc/x11stubs.o -c vnc/x11stubs.c + $(CC) $(CFLAGS) $(CPPFLAGS) $(VNCINC) -o vnc/x11stubs.o -c vnc/x11stubs.c .PHONY: install install: installbin installkeymaps installman @@ -161,7 +162,7 @@ configure: configure.ac .SUFFIXES: .c .o .c.o: - $(CC) $(CFLAGS) -o $@ -c $< + $(CC) $(CFLAGS) $(CPPFLAGS) -o $@ -c $< .PHONY: doc/AUTHORS doc/AUTHORS:
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