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  • Committer: Teddy Hogeborn
  • Date: 2014-06-08 03:10:08 UTC
  • Revision ID: teddy@recompile.se-20140608031008-mc9bd7b024a3q0y0
Address a very theoretical possible security issue in mandos-client.

If there were to run some sort of "cleaner" process for /run/tmp (or
/tmp), and mandos-client were to run for long enough for that cleaner
process to remove the temporary directory for GPGME, there was a
possibility that another unprivileged process could trick the (also
unprivileged) mandos-client process to remove other files or symlinks
which the unprivileged mandos-client process was allowed to remove.
This is not currently known to have been exploitable, since there are
no known initramfs environments running such cleaner processes.

* plugins.d/mandos-client.c (main): Use O_NOFOLLOW when opening
                                    tempdir for cleaning.

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Lines of Context:
debian/rules
 
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#!/usr/bin/make -f
 
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%:
 
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        dh $@
 
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override_dh_auto_build-arch:
 
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        LC_ALL=en_US.utf8 dh_auto_build -- all doc
 
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override_dh_auto_build-indep:
 
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        LC_ALL=en_US.utf8 dh_auto_build -- doc
 
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override_dh_installinit-indep:
 
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        dh_installinit --onlyscripts \
 
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                --update-rcd-params="defaults 25 15"
 
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override_dh_auto_install-indep:
 
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        $(MAKE) DESTDIR=$(CURDIR)/debian/mandos install-server
 
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override_dh_auto_install-arch:
 
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        $(MAKE) DESTDIR=$(CURDIR)/debian/mandos-client \
 
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                install-client-nokey
 
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override_dh_fixperms:
 
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        dh_fixperms --exclude etc/keys/mandos \
 
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                --exclude etc/mandos/clients.conf \
 
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                --exclude etc/mandos/plugins.d \
 
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                --exclude usr/lib/$(shell dpkg-architecture -qDEB_HOST_MULTIARCH 2>/dev/null)/mandos/plugins.d \
 
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                --exclude usr/share/doc/mandos-client/examples/network-hooks.d
 
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        chmod --recursive g-w -- \
 
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        "$(CURDIR)/debian/mandos-client/usr/share/doc/mandos-client/examples/network-hooks.d"
 
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override_dh_auto_test-arch: ;