Mercurial > dropbear
view debian/rules @ 1930:299f4f19ba19
Add /usr/sbin and /sbin to default root PATH
When dropbear is used in a very restricted environment (such as in a
initrd), the default user shell is often also very restricted
and doesn't take care of setting the PATH so the user ends up
with the PATH set by dropbear. Unfortunately, dropbear always
sets "/usr/bin:/bin" as default PATH even for the root user
which should have /usr/sbin and /sbin too.
For a concrete instance of this problem, see the "Remote Unlocking"
section in this tutorial: https://paxswill.com/blog/2013/11/04/encrypted-raspberry-pi/
It speaks of a bug in the initramfs script because it's written "blkid"
instead of "/sbin/blkid"... this is just because the scripts from the
initramfs do not expect to have a PATH without the sbin directories and
because dropbear is not setting the PATH appropriately for the root user.
I'm thus suggesting to use the attached patch to fix this misbehaviour (I
did not test it, but it's easy enough). It might seem anecdotic but
multiple Kali users have been bitten by this.
From https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=903403
author | Raphael Hertzog <hertzog@debian.org> |
---|---|
date | Mon, 09 Jul 2018 16:27:53 +0200 |
parents | 7b68e581985f |
children |
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#!/usr/bin/make -f export DEB_BUILD_MAINT_OPTIONS = hardening=+all DPKG_EXPORT_BUILDFLAGS = 1 include /usr/share/dpkg/buildflags.mk #export DH_OPTIONS DEB_HOST_GNU_TYPE ?=$(shell dpkg-architecture -qDEB_HOST_GNU_TYPE) DEB_BUILD_GNU_TYPE ?=$(shell dpkg-architecture -qDEB_BUILD_GNU_TYPE) STRIP =strip ifneq (,$(findstring nostrip,$(DEB_BUILD_OPTIONS))) STRIP =: nostrip endif CONFFLAGS = CC =gcc ifneq (,$(findstring diet,$(DEB_BUILD_OPTIONS))) CONFFLAGS =--disable-zlib CC =diet -v -Os gcc -nostdinc endif DIR =$(shell pwd)/debian/dropbear patch: deb-checkdir patch-stamp patch-stamp: for i in `ls -1 debian/diff/*.diff || :`; do \ patch -p1 <$$i || exit 1; \ done touch patch-stamp config.status: patch-stamp configure CC='$(CC)' \ CFLAGS='$(CFLAGS)'' -DSFTPSERVER_PATH="\"/usr/lib/sftp-server\""' \ ./configure --host='$(DEB_HOST_GNU_TYPE)' \ --build='$(DEB_BUILD_GNU_TYPE)' --prefix=/usr \ --mandir=\$${prefix}/share/man --infodir=\$${prefix}/share/info \ $(CONFFLAGS) build: deb-checkdir build-stamp build-stamp: config.status $(MAKE) CC='$(CC)' LD='$(CC)' touch build-stamp clean: deb-checkdir deb-checkuid test ! -r Makefile || $(MAKE) distclean rm -f libtomcrypt/Makefile libtommath/Makefile test ! -e patch-stamp || \ for i in `ls -1r debian/diff/*.diff || :`; do \ patch -p1 -R <$$i; \ done rm -f patch-stamp build-stamp config.log config.status rm -rf '$(DIR)' rm -f debian/files debian/substvars debian/copyright changelog install: deb-checkdir deb-checkuid build-stamp rm -rf '$(DIR)' install -d -m0755 '$(DIR)'/etc/dropbear # programs install -d -m0755 '$(DIR)'/usr/sbin install -m0755 dropbear '$(DIR)'/usr/sbin/dropbear install -d -m0755 '$(DIR)'/usr/bin install -m0755 dbclient '$(DIR)'/usr/bin/dbclient install -m0755 dropbearkey '$(DIR)'/usr/bin/dropbearkey install -d -m0755 '$(DIR)'/usr/lib/dropbear install -m0755 dropbearconvert \ '$(DIR)'/usr/lib/dropbear/dropbearconvert $(STRIP) -R .comment -R .note '$(DIR)'/usr/sbin/* \ '$(DIR)'/usr/bin/* '$(DIR)'/usr/lib/dropbear/* # init and run scripts install -d -m0755 '$(DIR)'/etc/init.d install -m0755 debian/dropbear.init '$(DIR)'/etc/init.d/dropbear install -m0755 debian/service/run '$(DIR)'/etc/dropbear/run install -d -m0755 '$(DIR)'/etc/dropbear/log install -m0755 debian/service/log '$(DIR)'/etc/dropbear/log/run ln -s /var/log/dropbear '$(DIR)'/etc/dropbear/log/main # man pages install -d -m0755 '$(DIR)'/usr/share/man/man8 install -d -m0755 '$(DIR)'/usr/share/man/man1 install -m644 dropbear.8 '$(DIR)'/usr/share/man/man8/ for i in dbclient.1 dropbearkey.1 dropbearconvert.1; do \ install -m644 $$i '$(DIR)'/usr/share/man/man1/ || exit 1; \ done gzip -9 '$(DIR)'/usr/share/man/man8/*.8 gzip -9 '$(DIR)'/usr/share/man/man1/*.1 # copyright, changelog cat debian/copyright.in LICENSE >debian/copyright test -r changelog || ln -s CHANGES changelog binary-indep: binary-arch: install dropbear.deb test '$(CC)' != 'gcc' || \ dpkg-shlibdeps '$(DIR)'/usr/sbin/* '$(DIR)'/usr/bin/* \ '$(DIR)'/usr/lib/dropbear/* dpkg-gencontrol -isp -pdropbear -P'$(DIR)' dpkg -b '$(DIR)' .. binary: binary-arch binary-indep .PHONY: patch build clean install binary-indep binary-arch binary include debian/implicit