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  • Committer: Teddy Hogeborn
  • Date: 2014-06-08 03:10:08 UTC
  • mto: (237.7.272 trunk)
  • mto: This revision was merged to the branch mainline in revision 317.
  • 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/control
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Source: mandos
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Section: admin
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Priority: extra
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Maintainer: Mandos Maintainers <mandos@fukt.bsnet.se>
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Uploaders: Teddy Hogeborn <teddy@fukt.bsnet.se>,
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           Björn Påhlsson <belorn@fukt.bsnet.se>
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Build-Depends: debhelper (>= 7), docbook-xml, docbook-xsl,
 
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Maintainer: Mandos Maintainers <mandos@recompile.se>
 
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Uploaders: Teddy Hogeborn <teddy@recompile.se>,
 
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           Björn Påhlsson <belorn@recompile.se>
 
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Build-Depends: debhelper (>= 9), docbook-xml, docbook-xsl,
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        libavahi-core-dev, libgpgme11-dev, libgnutls-dev, xsltproc,
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        pkg-config
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Standards-Version: 3.9.1
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Vcs-Bzr: http://ftp.fukt.bsnet.se/pub/mandos/trunk
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Vcs-Browser: http://bzr.fukt.bsnet.se/loggerhead/mandos/trunk/files
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Homepage: http://www.fukt.bsnet.se/mandos
 
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Build-Depends-Indep: systemd, python (>=2.6), python-gnutls,
 
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        python-dbus, python-avahi, python-gobject,
 
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        python (>=2.7) | python-argparse
 
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Standards-Version: 3.9.5
 
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Vcs-Bzr: http://ftp.recompile.se/pub/mandos/trunk
 
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Vcs-Browser: http://bzr.recompile.se/loggerhead/mandos/trunk/files
 
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Homepage: http://www.recompile.se/mandos
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Package: mandos
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Architecture: all
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Depends: ${misc:Depends}, python (>=2.6), python-gnutls, python-dbus,
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        python-avahi, python-gobject, avahi-daemon, adduser,
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        python-urwid, python (>=2.7) | python-argparse
 
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        python-urwid, python (>=2.7) | python-argparse, gnupg (<< 2),
 
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        initscripts (>= 2.88dsf-13.3)
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Recommends: fping
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Description: a server giving encrypted passwords to Mandos clients
 
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Description: server giving encrypted passwords to Mandos clients
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 This is the server part of the Mandos system, which allows
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 computers to have encrypted root file systems and at the
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 same time be capable of remote and/or unattended reboots.
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 whereupon the computers can continue booting normally.
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Package: mandos-client
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Architecture: any
 
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Architecture: linux-any
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Depends: ${shlibs:Depends}, ${misc:Depends}, adduser, cryptsetup,
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        gnupg (<< 2)
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Conflicts: dropbear (<= 0.52-5)
 
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        gnupg (<< 2), initramfs-tools, dpkg-dev (>=1.16.0)
 
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Breaks: dropbear (<= 0.53.1-1)
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Enhances: cryptsetup
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Description: do unattended reboots with an encrypted root file system
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 This is the client part of the Mandos system, which allows